MAX4543ESA+T中文资料

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MAX4544ESA+T中文资料

The MAX4541–MAX4544 are precision, dual analog switches designed to operate from a single +2.7V to +12V supply. Low power consumption (5µW) makes these parts ideal for battery-powered equipment. These switches offer low leakage currents (100pA max) and fast switching speeds (tON = 150ns max, tOFF = 100ns max).
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at .
Continuous Current (any terminal)....................................±10mA Peak Current, COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle max) ............................±20mA ESD per Method 3015.7 .................................................> 2000V Continuous Power Dissipation

MAX6163AESA-T中文资料

General DescriptionThe MAX6161–MAX6168 are precision, low-dropout,micropower voltage references. These three-terminal devices operate with an input voltage range from (V OUT + 200mV) to 12.6V and are available with output volt-age options of 1.25V, 1.8V, 2.048V, 2.5V, 3V, 4.096V,4.5V, and 5V. They feature a proprietary curvature-cor-rection circuit and laser-trimmed thin-film resistors that result in a very low temperature coefficient of 5ppm/°C (max) and an initial accuracy of ±2mV (max).Specifications apply to the extended temperature range (-40°C to +85°C).The MAX6161–MAX6168 typically draw only 100µA of supply current and can source 5mA (4mA for MAX6161) or sink 2mA of load current. Unlike conven-tional shunt-mode (two-terminal) references that waste supply current and require an external resistor, these devices offer a supply current that is virtually indepen-dent of the supply voltage (8µA/V variation) and do not require an external resistor. Additionally, the internally compensated devices do not require an external com-pensation capacitor. Eliminating the external compen-sation capacitor saves valuable board area in space-critical applications. A low-dropout voltage and a supply-independent, ultra-low supply current make these devices ideal for battery-operated, high-perfor-mance, low-voltage systems.The MAX6161–MAX6168 are available in 8-pin SO packages.________________________ApplicationsAnalog-to-Digital Converters (ADCs)Portable Battery-Powered Systems Notebook Computers PDAs, GPS, DMMs Cellular PhonesPrecision +3V/+5V Systems____________________________Features♦±2mV (max) Initial Accuracy♦5ppm/°C (max) Temperature Coefficient ♦5mA Source Current at 0.9mV/mA ♦2mA Sink Current at 2.5mV/mA ♦Stable with 1µF Capacitive Loads ♦No External Capacitor Required ♦100µA (typ) Quiescent Supply Current ♦200mV (max) Dropout at 1mA Load Current ♦Output Voltage Options: 1.25V, 1.8V, 2.048V, 2.5V,3V, 4.096V, 4.5V, 5V19-1650; Rev 3; 8/05MAX6161–MAX6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References________________________________________________________________Maxim Integrated Products 1___________________Pin Configuration*Insert the code for the desired initial accuracy and temperature coefficient (from the Selector Guide) in the blank to complete the part number.Typical Operating Circuit and Selector Guide appear at end of data sheet.Ordering InformationFor pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .M A X 6161–M A X 6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Voltages Referenced to GNDIN …………............................................................-0.3 to +13.5V OUT………………........................................-0.3V to (V IN + 0.3V)Output Short-Circuit Duration to GND or IN (V IN ≤6V)...Continuous Output Short-Circuit Duration to GND or IN (V IN > 6V)…...........60sContinuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range………….…………-65°C to +150°C Lead Temperature (soldering, 10s)……………………….+300°CELECTRICAL CHARACTERISTICS—MAX6161 (V OUT = 1.25V)MAX6161–MAX6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS—MAX6168 (V OUT = 1.800V)M A X 6161–M A X 6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS—MAX6162 (V OUT = 2.048V)MAX6161–MAX6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References_______________________________________________________________________________________5ELECTRICAL CHARACTERISTICS—MAX6166 (V OUT = 2.500V)M A X 6161–M A X 6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References 6_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS —MAX6163 (V OUT = 3.000V)MAX6161–MAX6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References_______________________________________________________________________________________7ELECTRICAL CHARACTERISTICS—MAX6164 (V OUT = 4.096V)M A X 6161–M A X 6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References 8_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS —MAX6167 (V OUT = 4.500V)MAX6161–MAX6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References_______________________________________________________________________________________9ELECTRICAL CHARACTERISTICS—MAX6165 (V OUT = 5.000V)Note 2:Temperature Coefficient is specified by the “box” method; i.e., the maximum ΔV OUT is divided by the maximum ΔT.Note 3:Thermal Hysteresis is defined as the change in T A = +25°C output voltage before and after temperature cycling of thedevice (from T A = T MIN to T MAX ). Initial measurement at T A = +25°C is followed by temperature cycling the device to T A = +85°C then to T A = -40°C, and another measurement at T A = +25°C is compared to the original measurement at T A = +25°C.Note 4:Dropout voltage is the minimum input voltage at which V OUT changes ≤0.2% from V OUT at V IN = 5.0V (V IN = 5.5V forMAX6165).M A X 6161–M A X 6168Precision, Micropower, Low-Dropout, High-Output-Current, SO-8 Voltage References 10______________________________________________________________________________________Typical Operating Characteristics(V IN = +5V for MAX6161–MAX6168, V IN = +5.5V for MAX6165, I OUT = 0, T A = +25°C, unless otherwise noted.) (Note 5)MAX6161OUTPUT VOLTAGE TEMPERATURE DRIFTTEMPERATURE (°C)O U T P U T V O L T A G E (V )70552540-1010-251.24961.24971.24981.24991.25001.25011.25021.25031.25041.25051.2495-4085MAX6165OUTPUT VOLTAGE TEMPERATURE DRIFTTEMPERATURE (°C)O U T P U T V O L T A G E (V )7055-25-102510404.99854.99904.99955.00005.00055.00105.00155.00204.9980-4085MAX6161LONG-TERM DRIFTM A X 6161/68 t o c 03TIME (hrs)D R I F T (p p m )768192384576-30-20-100102030405060-40960MAX6165LONG-TERM DRIFTM A X 6161/68 t o c 04TIME (hrs)D R I F T (p p m )768192384576-90-80-70-60-50-40-30-20-100-100960-300-200-100010020030024681012MAX6161LINE REGULATIONINPUT VOLTAGE (V)O U T P U T V O L T A G E C H A N G E (μV )-1200-600-800-1000-400-20002005971113MAX6165LINE REGULATIONINPUT VOLTAGE (V)O U T P U T V O L T A G E C H A N G E (μV )-310-1-22345-4-224LOAD CURRENT (mA)O U T P U T V O L T A G E C H A N G E (m V)MAX6161LOAD REGULATION-620-2-44861012-6-2-4246LOAD CURRENT (mA)O U T P U T V O L T A G E C H A N G E (m V )MAX6165LOAD REGULATION0.100.050.200.150.250.30021345MAX6166DROPOUT VOLTAGE vs. LOAD CURRENTLOAD CURRENT (mA)D R O P O U T V O L T A GE (V )MAX6161–MAX6168Output-Current, SO-8 Voltage References______________________________________________________________________________________11Typical Operating Characteristics (continued)(V IN = +5V for MAX6161–MAX6168, V IN = +5.5V for MAX6165, I OUT = 0, T A = +25°C, unless otherwise noted.) (Note 5)00.050.150.100.200.2521345LOAD CURRENT (mA)D R O P O U T V O L T A GE (V )MAX6165DROPOUT VOLTAGE vs. LOAD CURRENTM A X 6161/68 t o c 11FREQUENCY (kHz)P S R R (d B )0-10-20-30-40-50-60-70-80-900.0011101000.010.11000MAX6161POWER-SUPPLY REJECTION RATIOvs. FREQUENCY-70-800.001101000-60-50-40-30-20-100FREQUENCY (kHz)P S R R (d B )0.1MAX6165POWER-SUPPLY REJECTION RATIOvs. FREQUENCYM A X 6161/68 t c 12MAX6161SUPPLY CURRENT vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (μA )1210864108116124132140148156164172180100214MAX6165SUPPLY CURRENT vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (μA )1312101178969610210811412012613213814415090514MAX6161SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (μA )603510-15108116124132140148156164172180100-4085MAX6165SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (μA )603510-159610210811412012613213814415090-408500.00110100040206080100140120160180200220M A X 6161/68 t o c 17FREQUENCY (kHz)O U T P U T I M P E D A N C E (Ω)0.1MAX6161OUTPUT IMPEDANCE vs. FREQUENCY1800.00110100040206010080120140160M A X 6161/68 t o c 18FREQUENCY (kHz)O U T P U T I M P E D A N C E (Ω)0.1MAX6165OUTPUT IMPEDANCE vs. FREQUENCYM A X 6161–M A X 6168Output-Current, SO-8 Voltage References 12______________________________________________________________________________________Typical Operating Characteristics (continued)(V IN = +5V for MAX6161–MAX6168, V IN = +5.5V for MAX6165, I OUT = 0, T A = +25°C, unless otherwise noted.) (Note 5)V OUT 10μV/div 1s/div MAX61610.1Hz TO 10Hz OUTPUT NOISEM A X 6161/68 t o c 19V OUT 10μV/div1s/divMAX6165NOISEM A X 6161/68 t o c 20V OUT 500mV/divV IN 5V/div10μs/divMAX6161TURN-ON TRANSIENT(C L = 50pF)M A X 6161/68 t o c 21V OUT 2V/divV IN 5V/div40μs/divMAX6165TURN-ON TRANSIENT(C L = 50pF)M A X 6161/67 t o c 22I OUT 500μA/divV OUTAC-COUPLED 100mV/div400μs/div MAX6161LOAD TRANSIENT(I OUT = ±250μA, V IN = 5.0, C L = 0)+250μA -250μAMAX6161/68 toc23I OUT 500μA/divV OUTAC-COUPLED50mV/div400μs/divMAX6165LOAD TRANSIENT(I OUT = ±250μA, C L = 0, V IN = 5.5V)+250μA -250μAMAX6161/68 toc24MAX6161–MAX6168Output-Current, SO-8 Voltage References______________________________________________________________________________________13I OUT 5mA/divV OUTAC-COUPLED50mV/div400μs/divMAX6165LOAD TRANSIENT(C L = 0, I OUT = ±2mA, V IN = 5.5V)+2mA -2mAMAX6161/68 toc28I OUT 5mA/divV OUTAC-COUPLED 100mV/div 400μs/div MAX6161LOAD TRANSIENT(V IN = 5.0V, C L = 0, I OUT = ±2mA)+2mA-2mAMAX6161/68 toc27I OUT 5mA/divV OUTAC-COUPLED50mV/div400μs/divMAX6161LOAD TRANSIENT(V IN = 5.0V, C L = 1μF, I OUT = ±2mA)+2mA-2mAMAX6161/68 toc29I OUT 5mA/divV OUTAC-COUPLED20mV/div400μs/divMAX6165LOAD TRANSIENT(C L = 1μF, I OUT = ±2mA, V IN = 5.5V)+2mA-2mAMAX6161/68 toc30I OUT 500μA/divV OUTAC-COUPLED10mV/div 400μs/div MAX6161LOAD TRANSIENT(I OUT = ±250μA, V IN = 5.0V, C L = 1μF)+250μA -250μAMAX6161/68 toc25I OUT 500μA/divV OUTAC-COUPLED20mV/div400μs/divMAX6165LOAD TRANSIENT(I OUT = ±250μA, C L = 1μF, V IN = 5.5V)+250μA-250μAMAX6161/68 toc26Typical Operating Characteristics (continued)(V IN = +5V for MAX6161–MAX6168, V IN = +5.5V for MAX6165, I OUT = 0, T A = +25°C, unless otherwise noted.) (Note 5)M A X 6161–M A X 6168Output-Current, SO-8 Voltage References 14______________________________________________________________________________________I OUT 5mA/divV OUTAC-COUPLED50mV/div 400μs/div MAX6161LOAD TRANSIENT(V IN = 5.0V, C L = 1μF, I OUT = ±4mA)+4mA-4mAMAX6161/68 toc33I OUT 5mA/divV OUTAC-COUPLED50mV/div400μs/divMAX6165LOAD TRANSIENT(I OUT = ±5mA, C L = 1μF, V IN = 5.5V)+5mA-5mAMAX6161/68 toc34V IN500mV/divV OUTAC-COUPLED20mV/div 40μs/div MAX6161LINE TRANSIENT(C L = 0)+0.25V-0.25VMAX6161/68 toc35V IN500mV/divV OUTAC-COUPLED20mV/div40μs/divMAX6165LINE TRANSIENT(C L = 0)+0.25V -0.25VMAX6161/68 toc36Note 5:Many of the Typical Operating Characteristics of the MAX6161 family are extremely similar. The extremes of these characteristicsare found in the MAX6161 (1.25V output) and the MAX6165 (5.0V output). The Typical Operating Characteristics of the remain-der of the MAX6161 family typically lie between these two extremes and can be estimated based on their output voltages.Typical Operating Characteristics (continued)(V IN = +5V for MAX6161–MAX6168, V IN = +5.5V for MAX6165, I OUT = 0, T A = +25°C, unless otherwise noted.) (Note 5)I OUT 5mA/divV OUTAC-COUPLED 200mV/div400μs/div MAX6161LOAD TRANSIENT(V IN = 5.0V, C L = 0, I OUT = ±4mA)+4mA-4mAMAX6161/68 toc31I OUT 5mA/divV OUTAC-COUPLED 100mV/div400μs/divMAX6165LOAD TRANSIENT(I OUT = ±5mA, C L = 0, V IN = 5.5V)+5mA-5mAMAX6161/68 toc32MAX6161–MAX6168Output-Current, SO-8 Voltage References______________________________________________________________________________________15Applications InformationInput BypassingF or the best line-transient performance, decouple the input with a 0.1µF ceramic capacitor as shown in the Typical Operating Circuit . Locate the capacitor as close to IN as possible. When transient performance is less important, no capacitor is necessary.Output/Load CapacitanceDevices in the MAX6161 family do not require an output capacitor for frequency stability. In applications where the load or the supply can experience step changes,an output capacitor of at least 0.1µF will reduce the amount of overshoot (undershoot) and improve the cir-cuit’s transient response. Many applications do not require an external capacitor, and the MAX6161 family can offer a significant advantage in applications when board space is critical.Supply CurrentThe quiescent supply current of the series-mode MAX6161 family is typically 100µA and is virtually inde-pendent of the supply voltage, with only an 8µA/V (max) variation with supply voltage. Unlike series refer-ences, shunt-mode references operate with a series resistor connected to the power supply. The quiescent current of a shunt-mode reference is thus a function of the input voltage. Additionally, shunt-mode references have to be biased at the maximum expected load cur-rent, even if the load current is not present at the time.In the MAX6161 family, the load current is drawn from the input voltage only when required, so supply current is not wasted and efficiency is maximized at all input voltages. This improved efficiency reduces power dissi-pation and extends battery life.When the supply voltage is below the minimum speci-fied input voltage (as during turn-on), the devices can draw up to 400µA beyond the nominal supply current.The input voltage source must be capable of providing this current to ensure reliable turn-on.Output Voltage HysteresisOutput voltage hysteresis is the change in the input voltage at T A = +25°C before and after the device is cycled over its entire operating temperature range.Hysteresis is caused by differential package stress appearing across the bandgap core transistors. The typical temperature hysteresis value is 125ppm.Turn-On TimeThese devices typically turn on and settle to within 0.1% of their final value in 50µs to 300µs, depending on the output voltage (see electrical table of part used).The turn-on time can increase up to 1.5ms with the device operating at the minimum dropout voltage and the maximum load.Typical Operating Circuit__________________________Chip Information TRANSISTOR COUNT: 117PROCESS: BiCMOSPin DescriptionPIN NAME FUNCTIONNo Connection. Not internally connected.N.C.1, 3, 5, 7, 82IN Input Voltage GroundGND 46OUTReference OutputM A X 6161–M A X 6168Output-Current, SO-8 Voltage References 16______________________________________________________________________________________Selector GuideMAX6161–MAX6168Maxim cannot assume responsibility f or use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600_____________________17©2005 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products, Inc.S O I C N .E P SOutput-Current, SO-8 Voltage ReferencesPackage Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)。

el4543

带共模同步编码的三路差分双绞线驱动器概述EL4543是高带宽三路差动放大器，对视频同步信号进行完整的编码。

它的输入适合处理单端或差分形式的高速视频或其它通信信号。

在单电源的应用中，共模输入的范围可扩展到负值。

高带宽使标准双绞线或同轴电缆上的差分信号有非常低的谐波失真，同时，内部反馈保证输出有稳定的增益和相位，以减少辐射的电磁干扰和谐波。

嵌入逻辑将标准的视频水平和垂直同步信号编码到双绞线的共模信号上，在不需要附加缓冲器或传输线的情况下，传送这个附加信息。

EL4543和独立的线路驱动器相比，有效降低了系统的成本。

EL4543采用24引脚QSOP封装，规定的工作温度范围是-40℃到+85℃。

特点全差分输入，输出和反馈350MHz –3dB带宽1200V/μs转换速率5MHz下-75dB的失真5V到12V单电源工作50mA最小输出电流低功耗，-36mA的典型电源电流无铅（符合RoHS）应用双绞线驱动器差分线路驱动器双绞线上传送的VGA噪声环境下的模拟信号传送订购信息注：Intersil无铅产品采用特殊的无铅材料制成，模塑料／晶片的附属材料和100％无光泽锡盘引脚符合RoHS标准，兼容SnPb和无铅低温焊接操作。

Intersil无铅产品在无铅峰值回流温度中属于MSL级别分类，完全满足和超过IPC/GEDEC JSTD-020的无铅要求。

引脚图极限参数（T A=25℃）电源电压（V S+到V S-）……………………………………………… +12V最大连续输出电流…………………………………………………±70mA储存温度范围………………………………………………… -65℃到+150℃工作环境温度……………………………………………………-40℃到+85℃工作节点温度 (135)V IN+，V INB………………… V S- +0.8V（最小）到V S+ –0.8V（最大）V IN-，V INB……………………………………………………±5V注意：强度超出所列的极限参数可能导致器件的永久性损坏。

MAX4475

概述MAX4575/MAX4576/MAX4577是低电压，高静电放电（ESD）保护，双单极/单掷（SPST）模拟开关。

常关闭（NO）和常开（NC）引脚对± 15kV的ESD保护而不闭锁或损坏。

每个交换机可以处理轨到轨®模拟信号。

关断漏电流0.5nA在25 ° C。

这些适合低失真音频模拟开关应用和首选的解决方案在自动化测试设备或机械继电器开关电流所需的应用程序。

他们具有低功耗的要求（0.5μW），需要更少的电路板空间，比机械更可靠继电器。

每个设备控制的TTL / CMOS输入电压等级是双边的。

这些开关的功能保证操作+2 V至+12 V单电源供电，使他们的理想使用电池供电的应用。

电阻70Ω（最大），交换机之间的匹配，0.5Ω（典型值）单位在指定的信号范围内（2Ω典型）。

MAX4575有两个无开关，MAX4576两个NC交换机和MAX4577有一个NO和一个NC开关。

这些器件采用8引脚μMAX和SO封装。

应用电池供电系统音频和视频信号路由低电压数据采集系统采样和保持电路通信电路继电器替代品____________________________Features？NO / NC引脚的ESD保护± 15kV的（人体模型）± 15KV（IEC 1000-4-2气隙放电）± 8千伏（IEC 1000-4-2接触放电）？与MAX4541/MAX4542/MAX4543引脚兼容？保证电阻+5 V时的70Ω（最大）在+3 V，150Ω（最大）？通电阻平坦度2Ω（典型值）为+5 V在+3 V，6Ω（典型值）？电阻匹配0.5Ω（典型值）为+5 V在+3 V，0.6Ω（典型值）？保证0.5nA漏电流在TA = +25 ° C？2 V至+12 V单电源电压？TTL / CMOS逻辑兼容？低失真：0.015％？- 3dB带宽> 300MHz的？轨到轨信号范围MAX4575/MAX4576/MAX4577± 15kV ESD保护，低电压，双通道，单刀单掷，CMOS模拟开关______________________________________________________________ __马克西姆综合产品119-1762;冯0 7 / 00;对于免费样品和最新文献，参观访问www.maxim - 或电话1-800-998-8800。

max3485esa中文资料

General Description The MAX3483, MAX3485, MAX3486, MAX3488,MAX3490, and MAX3491 are 3.3V , low-power transceivers forRS-485 and RS-422 communication. Each part containsone driver and one receiver. The MAX3483 and MAX3488feature slew-rate-limited drivers that minimize EMI andreduce reflections caused by improperly terminatedcables, allowing error-free data transmission at data ratesup to 250kbps. The partially slew-rate-limited MAX3486transmits up to 2.5Mbps. The MAX3485, MAX3490, andMAX3491 transmit at up to 10Mbps.Drivers are short-circuit current-limited and are protectedagainst excessive power dissipation by thermal shutdowncircuitry that places the driver outputs into a high-imped-ance state. The receiver input has a fail-safe feature thatguarantees a logic-high output if both inputs are opencircuit.The MAX3488, MAX3490, and MAX3491 feature full-duplex communication, while the MAX3483, MAX3485, andMAX3486 are designed for half-duplex communication.Applications ●Low-Power RS-485/RS-422 Transceivers ●Telecommunications ●Transceivers for EMI-Sensitive Applications ●Industrial-Control Local Area NetworksFeatures●Operate from a Single 3.3V Supply—No Charge Pump!●Interoperable with +5V Logic ●8ns Max Skew (MAX3485/MAX3490/MAX3491)●Slew-Rate Limited for Errorless Data Transmission (MAX3483/MAX3488)●2nA Low-Current Shutdown Mode (MAX3483/MAX3485/MAX3486/MAX3491)●-7V to +12V Common-Mode Input Voltage Range ●Allows up to 32 Transceivers on the Bus ●Full-Duplex and Half-Duplex Versions Available ●Industry Standard 75176 Pinout (MAX3483/MAX3485/MAX3486)●Current-Limiting and Thermal Shutdown for Driver Overload Protection 19-0333; Rev 1; 5/19Ordering Information continued at end of data sheet.*Contact factory for for dice specifications.PARTTEMP . RANGE PIN-PACKAGE MAX3483CPA0°C to +70°C 8 Plastic DIP MAX3483CSA0°C to +70°C 8 SO MAX3483C/D0°C to +70°C Dice*MAX3483EPA-40°C to +85°C 8 Plastic DIP MAX3483ESA-40°C to +85°C 8 SO MAX3485CPA0°C to +70°C 8 Plastic DIP MAX3485CSA0°C to +70°C 8 SO MAX3485C/D0°C to +70°C Dice*MAX3485EPA-40°C to +85°C 8 Plastic DIP MAX3485ESA -40°C to +85°C 8 SO PARTNUMBERGUARANTEED DATA RATE (Mbps)SUPPLY VOLTAGE (V)HALF/FULL DUPLEX SLEW-RATE LIMITED DRIVER/RECEIVER ENABLE SHUTDOWN CURRENT (nA)PIN COUNT MAX34830.25 3.0 to 3.6Half Yes Yes 28MAX348510Half No No 28MAX34862.5Half Yes Yes 28MAX34880.25Half Yes Yes —8MAX349010Half No No —8MAX349110Half No Yes 214MAX3483/MAX3485/MAX3486/MAX3488/MAX3490/MAX3491Selection TableOrdering Information找电子元器件上宇航军工Figure 1. MAX3483/MAX3485/MAX3486 Pin Configuration and Typical Operating Circuit Figure 2. MAX3488/MAX3490 Pin Configuration and Typical Operating Circuit Figure 3. MAX3491 Pin Configuration and Typical Operating CircuitMAX3486/MAX3488/MAX3490/MAX3491True RS-485/RS-422 TransceiversFigure 22. MAX3488/MAX3490/MAX3491 Full-Duplex RS-485 NetworkFigure 23. Line Repeater for MAX3488/MAX3490/MAX3491MAX3486/MAX3488/MAX3490/MAX3491True RS-485/RS-422 Transceivers。

MAX4546CEE-T中文资料

_______________General DescriptionThe MAX4545/MAX4546/MAX4547 are low-voltage T-switches designed for switching RF and video signals from DC to 300MHz in 50Ωand 75Ωsystems. The MAX4545 contains four normally open single-pole/single-throw (SPST) switches. The MAX4546 contains two dual SPST switches (one normally open, one normally closed.)The MAX4547 contains two single-pole/double-throw (SPDT) switches.Each switch is constructed in a “T” configuration, ensuring excellent high-frequency off isolation and crosstalk of -80dB at 10MHz. They can handle Rail-to-Rail ®analog sig-nals in either direction. On-resistance (20Ωmax) is matched between switches to 1Ωmax and is flat (0.5Ωmax) over the specified signal range, using ±5V supplies.The off leakage current is less than 5nA at +25°C and 50nA at +85°C.These CMOS switches can operate with dual power sup-plies ranging from ±2.7V to ±6V or a single supply between +2.7V and +12V. All digital inputs have 0.8V/2.4V logic thresholds, ensuring both TTL- and CMOS-logic com-patibility when using ±5V or a single +5V supply.________________________ApplicationsRF SwitchingVideo Signal RoutingHigh-Speed Data Acquisition Test Equipment ATE Equipment Networking____________________________Featureso Low 50ΩInsertion Loss: -1dB at 100MHz o High 50ΩOff Isolation: -80dB at 10MHz o Low 50ΩCrosstalk: -80dB at 10MHz o DC to 300MHz -3dB Signal Bandwidth o 20ΩSignal Paths with ±5V Supplies o 1ΩSignal-Path Matching with ±5V Supplies o 0.5ΩSignal-Path Flatness with ±5V Supplies o ±2.7V to ±6V Dual Supplies +2.7V to +12V Single Supply o Low Power Consumption: <1µW o Rail-to-Rail Bidirectional Signal Handling o Pin Compatible with Industry-Standard DG540, DG542, DG643o >2kV ESD Protection per Method 3015.7o TTL/CMOS-Compatible Inputs with Single +5V or ±5VMAX4545/MAX4546/MAX4547Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches________________________________________________________________Maxim Integrated Products1_____________________Pin Configurations/Functional Diagrams/Truth Tables19-1232; Rev 0; 6/97Ordering Information continued at end of data sheet.For free samples & the latest literature: , or phone 1-800-998-8800Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.M A X 4545/M A X 4546/M A X 4547Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, V INL = 0.8V, V INH = 2.4V, V GND_= 0V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.(Voltages Referenced to GND)V+...........................................................................-0.3V, +13.0V V-............................................................................-13.0V, +0.3V V+ to V-...................................................................-0.3V, +13.0V All Other Pins (Note 1)..........................(V- - 0.3V) to (V+ + 0.3V)Continuous Current into Any Terminal..............................±25mA Peak Current into Any Terminal(pulsed at 1ms, 10% duty cycle)..................................±50mA ESD per Method 3015.7..................................................>2000V Continuous Power Dissipation (T A = +70°C) (Note 2)16-Pin Plastic DIP(derate 10.53mW/°C above +70°C)..........................842mW16-Pin Narrow SO(derate 8.70mW/°C above +70°C)............................696mW 16-Pin QSOP (derate 8.3mW/°C above +70°C)..........667mW 20-Pin Plastic DIP (derate 8.0mW/°C above +70°C)...640mW 20-Pin Wide SO (derate 10.00mW/°C above +70°C)..800mW 20-Pin SSOP (derate 8.0mW/°C above +70°C)..........640mW Operating Temperature RangesMAX454_C_ E.....................................................0°C to +70°C MAX454_E_ E..................................................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10sec).............................+300°CNote 1:Voltages on all other pins exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum cur-rent rating.MAX4545/MAX4546/MAX4547Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)(V+ = +4.5V to +5.5V, V- = -4.5V to -5.5V, V INL = 0.8V, V INH = 2.4V, V GND_= 0V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)M A X 4545/M A X 4546/M A X 4547Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS—Single +5V Supply(V+ = +4.5V to +5.5V, V- = 0V, V INL = 0.8V, V INH = 2.4V, V GND_= 0V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)MAX4545/MAX4546/MAX4547Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches_______________________________________________________________________________________5ELECTRICAL CHARACTERISTICS—Single +3V Supply(V+ = +2.7V to +3.6V, V- = 0V, V INL = 0.8V, V INH = 2.4V, V GND_ = 0V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Note 2:The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.Note 3:Guaranteed by design.Note 4:∆R ON = ∆R ON(MAX)- ∆R ON(MIN).Note 5:Resistance flatness is defined as the difference between the maximum and the minimum value of on-resistance as mea-sured over the specified analog signal range.Note 6:Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C.Note 7:Off isolation = 20log 10[V COM / (V NC or V NO )], V COM = output, V NC or V NO = input to off switch.Note 8:Between any two switches.Note 9:Leakage testing for single-supply operation is guaranteed by testing with dual supplies.M A X 4545/M A X 4546/M A X 4547Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches 6_________________________________________________________________________________________________________________________________Typical Operating Characteristics(V+ = +5V, V- = -5V, T A = +25°C, GND = 0V, packages are surface mount, unless otherwise noted.)10010-51234-4-3-2-15ON-RESISTANCE vs. V COM(DUAL SUPPLIES)V COM (V)R O N (Ω)5111315971723192125-5-3-2-4-1012345ON-RESISTANCE vs. V COM AND TEMPERATURE (DUAL SUPPLIES)V COM (V)R O N (Ω)10001010012345678910ON-RESISTANCE vs. V COM(SINGLE SUPPLY)V COM (V)R O N (Ω)102025153040354501.0 1.50.52.0 2.53.0 3.54.0 4.55.0ON-RESISTANCE vs. V COM AND TEMPERATURE (SINGLE SUPPLY)V COM (V)R O N (Ω)050100150200250±2±3±4±5±6±8ON/OFF TIME vs.SUPPLY VOLTAGEM A X 4545 T O C 07V+, V- (V)t O N , t O F F (n s )t ONt OFF0.00010.0010.010.1110-75-50-25257550100125ON/OFF-LEAKAGE CURRENT vs.TEMPERATURETEMPERATURE (°C)L E A K A G E (n A)-20204006010080120-5-3-2-4-1012345CHARGE INJECTION vs. V COMV COM (V)Q j (p C )103050709011020406080100-75-2575125-502550100ON/OFF TIME vs.TEMPERATUREM A X 4545 T O C 08TEMPERATURE (°C)t O N , t O F F (n s )t ONt OFF0.000010.00010.001I-I+0.010.11-75-2575125-502550100POWER-SUPPLY CURRENT vs. TEMPERATUREM A X 4545 T O C 09TEMPERATURE (°C)I +, I - (µA )MAX4545/MAX4546/MAX4547Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches_______________________________________________________________________________________70.40.20.61.21.41.00.81.601.0 1.52.0 2.50.53.0 3.54.0 4.55.0LOGIC-LEVEL THRESHOLD vs. POSITIVE SUPPLY VOLTAGEM A X 4545 T O C 10V+ (V)L O G I C -L E V E L T H R E S H O L D (V )-1200.11010001001MAX4545FREQUENCY RESPONSE-100-110FREQUENCY (MHz)L O S S (d B )-80-90-60-50-70-40-20-10-30-1001101001000MAX4546FREQUENCY RESPONSE-60-70-80-90-30-40-50-20-10FREQUENCY (MHz)L O S S (d B )100-20-10-1001101000FREQUENCY RESPONSE-70-80-90-30-40-50-601006080-100-40-60-8040200-20FREQUENCY (MHz)S W I T C H L O S S (d B )O N P H A S E (D E G R E E S )1001000.0001101k 100k10k100MAX4547TOTAL HARMONIC DISTORTIONvs. FREQUENCY0.001FREQUENCY (Hz)T H D (%)0.010.1110____________________________Typical Operating Characteristics (continued)(V+ = +5V, V- = -5V, T A = +25°C, GND = 0V, packages are surface mount, unless otherwise noted.)_______________Theory of OperationLogic-Level TranslatorsThe MAX4545/MAX4546/MAX4547 are constructed as high-frequency “T” switches, as shown in Figure 1. The logic-level input, IN_, is translated by amplifier A1 into a V+ to V- logic signal that drives amplifier A2. (Amplifier A2 is an inverter for normally closed switches.)Amplifier A2 drives the gates of N-channel MOSFETs N1 and N2 from V+ to V-, turning them fully on or off.The same signal drives inverter A3 (which drives the P-channel MOSFETs P1 and P2) from V+ to V-, turning them fully on or off, and drives the N-channel MOSFET N3 off and on.The logic-level threshold is determined by V+ and GND_. The voltage on GND_ is usually at ground potential, but it may be set to any voltage between (V+ - 2V) and V-. When the voltage between V+ and GND_ is less than 2V, the level translators become very slow and unreliable. Since individual switches in each package have individual GND_ pins, they may be set to different voltages. Normally, however, they should all be connected to the ground plane.Switch On ConditionWhen the switch is on, MOSFETs N1, N2, P1, and P2are on and MOSFET N3 is off. The signal path is COM_to NO_, and because both N-channel and P-channel MOSFETs act as pure resistances, it is symmetrical(i.e., signals may pass in either direction). The off MOSFET, N3, has no DC conduction, but has a small amount of capacitance to GND_. The four on MOSFETs also have capacitance to ground that,together with the series resistance, forms a lowpass fil-ter. All of these capacitances are distributed evenly along the series resistance, so they act as a transmis-sion line rather than a simple R-C filter. This helps to explain the exceptional 300MHz bandwidth when the switches are on.M A X 4545/M A X 4546/M A X 4547Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches 8_____________________________________________________________________________________________________________________________________________________Pin Description*All pins have ESD diodes to V- and V+.**NO_ (or NC_) and COM_ pins are identical and interchangeable. Either may be considered as an input or output; signals passequally well in either direction.Figure 1. T-Switch ConstructionTypical attenuation in 50Ωsystems is -1dB and is rea-sonably flat up to 100MHz. Higher-impedance circuits show even lower attenuation (and vice versa), but slightly lower bandwidth due to the increased effect of the internal and external capacitance and the switch’s internal resistance.The MAX4545/MAX4546/MAX4547 are optimized for ±5V operation. Using lower supply voltages or a single supply increases switching time, increases on-resis-tance (and therefore on-state attenuation), and increas-es nonlinearity.Switch Off Condition When the switch is off, MOSFETs N1, N2, P1, and P2 are off and MOSFET N3 is on. The signal path is through the off-capacitances of the series MOSFETs, but it is shunted to ground by N3. This forms a high-pass filter whose exact characteristics are dependent on the source and load impedances. In 50Ωsystems, and below 10MHz, the attenuation can exceed 80dB. This value decreases with increasing frequency and increasing circuit impedances. External capacitance and board layout have a major role in determining over-all performance.__________Applications InformationPower-Supply ConsiderationsOverview The MAX4545/MAX4546/MAX4547 construction is typi-cal of most CMOS analog switches. It has three supply pins: V+, V-, and GND. V+ and V- are used to drive the internal CMOS switches and set the limits of the analog voltage on any switch. Reverse ESD protection diodes are internally connected between each analog signal pin and both V+ and V-. If the voltage on any pin exceeds V+ or V-, one of these diodes will conduct. During normal operation these reverse-biased ESD diodes leak, forming the only current drawn from V-. Virtually all the analog leakage current is through the ESD diodes. Although the ESD diodes on a given sig-nal pin are identical, and therefore fairly well balanced, they are reverse biased differently. Each is biased by either V+ or V- and the analog signal. This means their leakages vary as the signal varies. The difference in the two diode leakages from the signal path to the V+ and V- pins constitutes the analog signal-path leakage cur-rent. All analog leakage current flows to the supply ter-minals, not to the other switch terminal. This explains how both sides of a given switch can show leakage currents of either the same or opposite polarity.There is no connection between the analog signal paths and GND. The analog signal paths consist of an N-channel and P-channel MOSFET with their sources and drains paralleled and their gates driven out of phase with V+ and V- by the logic-level translators.V+ and GND power the internal logic and logic-level translators, and set the input logic thresholds. The logic-level translators convert the logic levels to switched V+ and V- signals to drive the gates of the analog switches. This drive signal is the only connec-tion between the logic supplies and the analog sup-plies. All pins have ESD protection to V+ and to V-. Increasing V- has no effect on the logic-level thresh-olds, but it does increase the drive to the P-channel switches, reducing their on-resistance. V- also sets the negative limit of the analog signal voltage.The logic-level thresholds are CMOS and TTL compati-ble when V+ is +5V. As V+ is raised, the threshold increases slightly; when V+ reaches +12V, the level threshold is about 3.1V, which is above the TTL output high-level minimum of 2.8V, but still compatible with CMOS outputs.Bipolar-Supply Operation The MAX4545/MAX4546/MAX4547 operate with bipolar supplies between ±2.7V and ±6V. The V+ and V- sup-plies need not be symmetrical, but their sum cannot exceed the absolute maximum rating of 13.0V. Do not connect the MAX4545/MAX4546/MAX4547 V+ pin to +3V and connect the logic-level input pins to TTL logic-level signals. TTL logic-level outputs can exceed the absolute maximum ratings, causing damage to the part and/or external circuits.CAUTION:The absolute maximum V+ to V- differential voltage is 13.0V. Typical “±6-Volt” or “12-Volt”supplies with ±10% tolerances can be as high as 13.2V. This voltage can damage the MAX4545/MAX4546/MAX4547. Even ±5% toler-ance supplies may have overshoot or noise spikes that exceed 13.0V.Single-Supply Operation The MAX4545/MAX4546/MAX4547 operate from a sin-gle supply between +2.7V and +12V when V- is con-nected to GND. All of the bipolar precautions must be observed. Note, however, that these parts are opti-mized for ±5V operation, and most AC and DC charac-teristics are degraded significantly when departing from ±5V. As the overall supply voltage (V+ to V-) is lowered, switching speed, on-resistance, off isolation, and distortion are degraded. (See Typical Operating Characteristics.) MAX4545/MAX4546/MAX4547Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches _______________________________________________________________________________________9M A X 4545/M A X 4546/M A X 4547Single-supply operation also limits signal levels and interferes with grounded signals. When V- = 0V, AC sig-nals are limited to -0.3V. Voltages below -0.3V can be clipped by the internal ESD-protection diodes, and the parts can be damaged if excessive current flows.Power OffWhen power to the MAX4545/MAX4546/MAX4547 is off (i.e., V+ = 0V and V- = 0V), the Absolute Maximum Ratings still apply. This means that neither logic-level inputs on IN_ nor signals on COM_, NO_, or NC_ can exceed ±0.3V. Voltages beyond ±0.3V cause the inter-nal ESD-protection diodes to conduct, and the parts can be damaged if excessive current flows.GroundingDC Ground ConsiderationsSatisfactory high-frequency operation requires that careful consideration be given to grounding. For most applications, a ground plane is strongly recom-mended, and all GND_ pins should be connected to it with solid copper.While the V+ and V- power-supply pins are common to all switches in a given package,each switch has separate ground pins that are not internally connected to each other. This contributes to the overall high-frequency performance and provides added flexibility in some applications, but it can cause problems if it is overlooked. All the GND_ pins have ESD diodes to V+ and V-.In systems that have separate digital and analog (sig-nal) grounds, connect these switch GND_ pins to ana-log ground. Preserving a good signal ground is much more important than preserving a digital ground.Ground current is only a few nanoamps.The logic-level inputs, IN_, have voltage thresholds determined by V+ and GND_. (V- does not influence the logic-level threshold.) With +5V and 0V applied to V+ and GND_, the threshold is about 1.6V, ensuring compatibility with TTL- and CMOS-logic drivers.The various GND_ pins can be connected to separate voltage potentials if any or all of the logic-level inputs is not a normal logic signal. (The GND_ voltages cannot exceed (V+ - 2V) or V-.) Elevating GND_ reduces off isolation. For example, using the MAX4545, if GND2–GND6 are connected to 0V and GND1 is connected to V-, then switches 2, 3, and 4 would be TTL/CMOS com-patible, but switch 1 (IN1) could be driven with the rail-to-rail output of an op amp operating from V+ and V-.Note, however, that IN_ can be driven more negative than GND_, as far as V-. GND_ does not have to be removed from 0V when IN_ is driven from bipolar sources, but the voltage on IN_ should never exceed V-.GND_ should be separated from 0V only if the logic-level threshold has to be changed.Any GND_ pin not connected to 0V should be bypassed to the ground plane with a surface-mount 10nF capacitor to maintain good RF grounding. DC current in the IN_ and GND_ pins is less than 1nA, but increases with switching frequency.On the MAX4545 only, two extra ground pins—GND5and GND6—are provided to improve isolation and crosstalk. They are not connected to the logic-level cir-cuit. These pins should always be connected to the ground plane with solid copper.AC Ground and BypassingA ground plane is mandatory for satisfactory high-frequency operation.(Prototyping using hand wiring or wire-wrap boards is strongly discouraged.) Connect all 0V GND_ pins to the ground plane with solid copper.(The GND_ pins extend the high-frequency ground through the package wire-frame, into the silicon itself,thus improving isolation.) The ground plane should be solid metal underneath the device, without interruptions.There should be no traces under the device itself. For DIP packages, this applies to both sides of a two-sided board. Failure to observe this will have a minimal effect on the “on” characteristics of the switch at high frequen-cies, but it will degrade the off isolation and crosstalk.All V+ and V- pins should be bypassed to the ground plane with surface-mount 10nF capacitors. For DIP packages, they should be mounted as close as possi-ble to the pins on the same side of the board as the device. Do not use feedthroughs or vias for bypass capacitors. For surface-mount packages, the pins are so close to each other that the bypass capacitors should be mounted on the opposite side of the board from the device. In this case, use short feedthroughs or vias, directly under the V+ and V- pins. Any GND_ pin not connected to 0V should be similarly bypassed. If V-is 0V, connect it directly to the ground plane with solid copper. Keep all leads short.The MAX4547 has two V+ and V- pins. Make DC con-nections to only one of each to minimize crosstalk. Do not route DC current into one of the V+ or V- pins and out the other V+ or V- pin to other devices. The second set of V+ and V- pins is for AC bypassing only.For dual-supply operation, the MAX4547 should have four 10nF bypass capacitors connected to each V+and V- pin, as close to the package as possible. For single-supply operation, the MAX4547 should have two 10nF bypass capacitors connected (one to each V+pin), as close to the package as possible.Quad/Dual, Low-Voltage,Bidirectional RF/Video Switches 10______________________________________________________________________________________MAX4545/MAX4546/MAX4547Bidirectional RF/Video Switches______________________________________________________________________________________11On the MAX4545, GND5 and GND6 should always be connected to the ground plane with solid copper to improve isolation and crosstalk.Signal RoutingKeep all signal leads as short as possible. Separate all signal leads from each other and other traces with the ground plane on both sides of the board. Where possi-ble, use coaxial cable instead of printed circuit board traces.Board LayoutIC sockets degrade high-frequency performance and should not be used if signal bandwidth exceeds 5MHz.Surface-mount parts, having shorter internal lead frames, provide the best high-frequency performance.Keep all bypass capacitors close to the device, and separate all signal leads with ground planes. Such grounds tend to be wedge-shaped as they get closer to the device. Use vias to connect the ground planes on each side of the board, and place the vias in the apex of the wedge-shaped grounds that separate signal leads.Logic-level signal lead placement is not critical.Impedance MatchingThe typical on-resistances of the switches in the MAX4545/MAX4546/MAX4547 are 14Ω, but the off-state impedances are approximately equal to a 6pF capacitor. In coaxial systems, therefore, it is impossible to match any impedance for both the on and off state. If impedance matching is critical, the MAX4546 is best suited, since its two sections can be configured as a single on/off switch, as shown in Figure 2. This circuit “wastes” switches and has higher losses, but has bet-ter off isolation and maintains good impedance match-ing in both the on and off states. The resistance values shown in Figure 3 are optimized with ±5V supplies for both 50Ωand 75Ωsystems at room temperature.MultiplexerWith its excellent off isolation, the MAX4545 is ideal for use in high-frequency video multiplexers. Figure 3shows such an application for switching any one of four video inputs to a single output. The same circuit may be used as a demultiplexer by simply reversing the sig-nal direction.Stray capacitance of traces and the output capacitance of switches placed in parallel reduces bandwidth, so the outputs of no more than four individual switches should be placed in parallel if high bandwidth is to be main-tained. If more than four mux channels are needed, the 4-channel circuit should be duplicated and cascaded.Figure 2. Impedance Matching On/Off SwitchM A X 4545/M A X 4546/M A X 4547Bidirectional RF/Video Switches 12______________________________________________________________________________________Figure 3. 4-Channel MultiplexerMAX4545/MAX4546/MAX4547Bidirectional RF/Video Switches______________________________________________________________________________________13Figure 4. Switching Time______________________________________________Test Circuits/Timing DiagramsFigure 5. Break-Before-Make Interval (MAX4546/MAX4547 only)M A X 4545/M A X 4546/M A X 4547Bidirectional RF/Video Switches 14______________________________________________________________________________________Figure 6. Charge InjectionFigure 7. On Loss, Off Isolation, and Crosstalk_________________________________Test Circuits/Timing Diagrams (continued)MAX4545/MAX4546/MAX4547Bidirectional RF/Video Switches______________________________________________________________________________________15N.C. = NO INTERNAL CONNECTIONTRANSISTOR COUNT: 253SUBSTRATE INTERNALLY CONNECTED TO V-GND2GND5GND4NO4V-NO1COM30.101"(2.565mm)0.085"(2.159mm)COM4IN4IN3GND6V+NO2N.C.NO3GND3COM1IN1IN2COM2GND1N.C.MAX4545GND2GND4N.C.COM1N.C.N.C.NC20.101"(2.565mm)0.085"(2.159mm)V+NC1IN2COM2N.C.N.C.V-N.C.GND3GND1V-MAX4547GND2N.C.N.C.NC4V-NO1GND30.101"(2.565mm)MAX4546GND4COM4COM3N.C.V+NO2N.C.NC30.085"(2.159mm)GND1N.C.Figure 8. NO_, NC_, COM_ Capacitance_________________Chip TopographiesMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.16__________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600©1997 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.M A X 4545/M A X 4546/M A X 4547Bidirectional RF/Video Switches___________________________________________Ordering Information (continued)*Contact factory for dice specifications.。

MAX1483ESA+中文资料

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at .
元器件交易网
µMAX is a registered trademark of Maxim Integrated products, Inc.
________________________________________________________________ Maxim Integrated Products 1
元器件交易网
19-0367; Rev 1; 5/06
MAX1482/MAX1483
20µA, 1⁄8-Unit-Load, Slew-Rate-Limited RS-485 Transceivers
_______________General Description
The MAX1482 and MAX1483 are low-power transceivers for RS-485 and RS-422 communication. Both feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables. Data rates are guaranteed up to 250kbps. The MAX1482/MAX1483 draw only 20µA of supply current. Additionally, they have a low-current shutdown mode that consumes only 0.1µA. Both parts operate from a single +5V supply. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is open circuit. The MAX1482 is full duplex and the MAX1483 is half duplex. Both parts have a 1⁄8-unit-load input impedance that guarantees up to 256 transceivers on the bus.

MAX4453中文资料

o Single +3V/+5V Operation
o Rail-to-Rail Outputs
o Input Common-Mode Range Extends Beyond VEE o Ultra-Small SC70-5, SOT23-5, and SOT23-8
Packages
Ordering Information
元器件交易网
19-1824; Rev 0; 2/01
MAX4452/MAX4453/MAX4454/MAX4352/MAX4353/MAX4354
Low-Cost, +3V/+5V, 620µA, 200MHz, Single-Supply Op Amps with Rail-to-Rail Outputs
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at .
元器件交易网
5-Pin SC70 (derate 3.1mW/°C above +70°C) .............247mW 5 Pin SOT23 (derate 7.1mW/°C above +70°C) ...........571mW 8-Pin SOT23 (derate 8.9mW/°C above +70°C)...........741mW 8-Pin SO (derate 5.9mW/°C above +70°C).................471mW
________________________Applications

MAX3087ESA中文资料

375
256
MAX3084
Full
0.5
Yes
No
No
375
256
MAX3085
Half
0.5
Yes
Yes
Yes
375
256
MAX3086
Full
10
No
Yes
Yes
375
256
MAX3087
Full
10
No
No
No
375
256
MAX3088
Half
10
No
Yes
Yes
375
256
MAX3089 Selectable Selectable Selectable
These transceivers typically draw 375µA of supply current when unloaded, or when fully loaded with the drivers disabled.
All devices have a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus. The MAX3082/MAX3085/MAX3088 are intended for halfduplex communications, while the MAX3080/MAX3081/ MAX3083/MAX3084/MAX3086/MAX3087 are intended for full-duplex communications. The MAX3089 is selectable between half-duplex and full-duplex operation. It also features independently programmable receiver and transmitter output phase via separate pins.

MAX3483EESA-T中文资料

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
元器件交易网
3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited True RS-485/RS-422 Transceivers
MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E
MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E
Ordering Information
PART TEMP. RANGE 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP MAX3483ECSA MAX3483ECPA MAX3483EESA MAX3483EEPA MAX3485ECSA MAX3485ECPA MAX3485EESA MAX3485EEPA

MAX4080SASA-T中文资料

General DescriptionThe MAX4080/MAX4081 are high-side, current-sense amplifiers with an input voltage range that extends from 4.5V to 76V making them ideal for telecom, automotive,backplane, and other systems where high-voltage cur-rent monitoring is critical. The MAX4080 is designed for unidirectional current-sense applications and the MAX4081 allows bidirectional current sensing. The MAX4081 single output pin continuously monitors the transition from charge to discharge and avoids the need for a separate polarity output. The MAX4081requires an external reference to set the zero-current output level (V SENSE = 0V). The charging current is rep-resented by an output voltage from V REF to V CC , while discharge current is given from V REF to GND.For maximum versatility, the 76V input voltage range applies independently to both supply voltage (V CC )and common-mode input voltage (V RS+). H igh-side current monitoring does not interfere with the ground path of the load being measured, making the MAX4080/MAX4081 particularly useful in a wide range of high-voltage systems.The combination of three gain versions (5V/V, 20V/V,60V/V = F, T, S suffix) and a user-selectable, external sense resistor sets the full-scale current reading and its proportional output voltage. The MAX4080/MAX4081offer a high level of integration, resulting in a simple,accurate, and compact current-sense solution.The MAX4080/MAX4081 operate from a 4.5V to 76V sin-gle supply and draw only 75µA of supply current. These devices are specified over the automotive operating temperature range (-40°C to +125°C) and are available in a space-saving 8-pin µMAX or SO package.ApplicationsAutomotive (12V, 24V, or 42V Batteries)48V Telecom and Backplane Current MeasurementBidirectional Motor Control Power-Management SystemsAvalanche Photodiode and PIN-Diode Current MonitoringGeneral System/Board-Level Current Sensing Precision High-Voltage Current SourcesFeatures♦Wide 4.5V to 76V Input Common-Mode Range ♦Bidirectional or Unidirectional I SENSE ♦Low-Cost, Compact, Current-Sense Solution ♦Three Gain Versions Available5V/V (MAX4080F/MAX4081F)20V/V (MAX4080T/MAX4081T)60V/V (MAX4080S/MAX4081S)♦±0.1% Full-Scale Accuracy ♦Low 100µV Input Offset Voltage ♦Independent Operating Supply Voltage ♦75µA Supply Current (MAX4080)♦Reference Input for Bidirectional OUT (MAX4081)♦Available in a Space-Saving 8-Pin µMAX PackageMAX4080/MAX408176VVoltage Output________________________________________________________________Maxim Integrated Products 1Pin ConfigurationsOrdering Information19-2562; Rev 0; 10/02For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at .Selector Guide appears at end of data sheet.M A X 4080/M A X 408176V , High-Side, Current-Sense Amplifiers with Voltage Output 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V CC to GND............................................................-0.3V to +80V RS+, RS- to GND....................................................-0.3V to +80V OUT to GND.............-0.3V to the lesser of +18V or (V CC + 0.3V)REF1A, REF1B to GND(MAX4081 Only)....-0.3V to the lesser of +18V or (V CC + 0.3V)Output Short Circuit to GND.......................................Continuous Differential Input Voltage (V RS + - V RS -)...............................±80V Current into Any Pin..........................................................±20mAContinuous Power Dissipation (T A = +70°C)8-Pin µMAX (derate 4.5mW/°C above +70°C).............362mW 8-Pin SO (derate 5.88mW/°C above +70°C)................471mW Operating Temperature Range .........................-40°C to +125°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CDC ELECTRICAL CHARACTERISTICSMAX4080/MAX408176V , High-Side, Current-Sense Amplifiers withVoltage Output_______________________________________________________________________________________3DC ELECTRICAL CHARACTERISTICS (continued)M A X 4080/M A X 408176V , High-Side, Current-Sense Amplifiers with Voltage Output 4_______________________________________________________________________________________AC ELECTRICAL CHARACTERISTICSNote 2:V REF is defined as the average voltage of V REF1A and V REF1B . REF1B is usually connected to REF1A or GND.V SENSE is defined as V RS+- V RS-.Note 3:The common-mode range at the low end of 4.5V applies to the most positive potential at RS+ or RS-. Depending on thepolarity of V SENSE and the device’s gain, either RS+ or RS- can extend below 4.5V by the device’s typical full-scale value of V SENSE .Note 4:Negative V SENSE applies to MAX4081 only.Note 5:V SENSE is:MAX4080F, 10mV to 1000mV MAX4080T, 10mV to 250mV MAX4080S, 10mV to 100mV MAX4081F, -500mV to +500mV MAX4081T, -125mV to +125mV MAX4081S, -50mV to +50mVNote 6:V OS is extrapolated from the gain accuracy test for the MAX4080 and measured as (V OUT - V REF )/A V at V SENSE = 0V, for theMAX4081.Note 7:V SENSE is:MAX4080F, 500mV MAX4080T, 125mV MAX4080S, 50mV MAX4081F/T/S, 0VV REF1B = V REF1A = 2.5VNote 8:Output voltage is internally clamped not to exceed 18V.Note 9:Output settles to within 1% of final value.Note 10:The device will not experience phase reversal when overdriven.MAX4080/MAX408176V , High-Side, Current-Sense Amplifiers withVoltage Output_______________________________________________________________________________________52015105302535-125-75-50-25-1000255075100125INPUT OFFSET VOLTAGE HISTOGRAMINPUT OFFSET VOLTAGE (μV)P E R C E N T A G E (%)INPUT OFFSET VOLTAGE vs. TEMPERATURE-300-250-150-200050-50-100300100150200250I N P U T O F F S E T V O L T A G E (μV )-502550-2575100125150TEMPERATURE (°C)-0.5-0.2-0.3-0.40-0.10.40.30.20.10.5-50-250255075100125GAIN ACCURACY vs. TEMPERATURETEMPERATURE (°C)G A I N A C C U R A C Y (%)GAIN ACCURACY vs. V CCV CC (V)G A I N A C C U R A C Y (%)6452402816-0.15-0.10-0.05-0.20476M A X 4080 t o c 05FREQUENCY (Hz)C O M M O N -M ODE R E J E C T I O N R A T I O (d B )100k10k1k10010-120-100-110-90-80-60-70-50-40-20-30-100-13011M MAX4081F/T/SCOMMON-MODE REJECTION RATIOvs. FREQUENCYM A X 080 t o c 06FREQUENCY (Hz)P O W E R -S U P P L Y R E J E C T I O N R A T I O (d B )100k 10k 1k 10010-120-100-110-90-80-60-70-50-40-20-30-100-13011MMAX4081F/T/SPOWER-SUPPLY REJECTION RATIOvs. FREQUENCYM A X 4080 t o c 07FREQUENCY (Hz)R E F E R E N C E R E J E C T I O N R A T I O (dB )-110-90-100-80-60-70-50-40-20-30-100-120MAX4081F/T/SREFERENCE REJECTION RATIOvs. FREQUENCY10k1k100101100k FREQUENCY (kHz)G A I N (d B )100101510152025303540455000.11000MAX4080F/T/SSMALL-SIGNAL GAIN vs. FREQUENCYFREQUENCY (kHz)G A I N (d B )10010151015202530354045500.11000MAX4081F/T/SSMALL-SIGNAL GAIN vs. FREQUENCYTypical Operating Characteristics(V CC = V RS+= 48V, V SENSE = 0V, C LOAD = 20pF, R LOAD = ∞, T A = +25°C, unless otherwise noted.)M A X 4080/M A X 408176V , High-Side, Current-Sense Amplifiers with Voltage Output 6_______________________________________________________________________________________Typical Operating Characteristics (continued)(V CC = V RS+= 48V, V SENSE = 0V, C LOAD = 20pF, R LOAD = ∞, T A = +25°C, unless otherwise noted.)6065757080854281640526476MAX4080SUPPLY CURRENT vs. V CCV CC (V)S U P P L Y C U R R E N T (μA )V CC (V)S U P P L Y C U R R E N T (μA )6452162840859095100105110115120125476MAX4081SUPPLY CURRENT vs. V CC65807570908511010510095115-50-250255075100125MAX4080SUPPLY CURRENT vs. TEMPERATUREM A X 4080 t o c 12TEMPERATURE (°C)S U P P L Y C U R RE N T (μA )65807570908511010510095115-50-250255075100125MAX4081SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (μA )I OUT (SOURCING) (mA)V O U T H I G H V O L T A G E (V C C - V O H ) (V )0.90.80.60.70.20.30.40.50.10.050.100.150.200.250.300.350.400.450.5001.0V OUT HIGH VOLTAGE vs. I OUT (SOURCING)450400350300250200150100505010015020025030000500V OUT LOW VOLTAGE vs. I OUT (SINKING)I OUT (SINKING) (μA)V O U T L O W V O L T A G E (m V )MAX4080 toc16INPUT 5mV/div OUTPUT 25mV/div 20μs/div MAX4080FSMALL-SIGNAL TRANSIENT RESPONSEMAX4080 toc17INPUT 5mV/div OUTPUT 100mV/div 20μs/div MAX4080TSMALL-SIGNAL TRANSIENT RESPONSEMAX4080 toc18INPUT 5mV/divOUTPUT 300mV/div20μs/divMAX4080SSMALL-SIGNAL TRANSIENT RESPONSEMAX4080/MAX408176V , High-Side, Current-Sense Amplifiers withVoltage Output_______________________________________________________________________________________7MAX4080 toc19INPUT 10mV/div OUTPUT 50mV/div 20μs/div MAX4081FSMALL-SIGNAL TRANSIENT RESPONSEMAX4080 toc20INPUT 2.5mV/div OUTPUT 50mV/div 20μs/div MAX4081TSMALL-SIGNAL TRANSIENT RESPONSEMAX4080 toc21INPUT 1mV/divOUTPUT 50mV/div20μs/divMAX4081SSMALL-SIGNAL TRANSIENT RESPONSEMAX4080 toc22INPUT 400mV/div OUTPUT 2V/div 20μs/div MAX4080FLARGE-SIGNAL TRANSIENT RESPONSEMAX4080 toc23INPUT 100mV/div OUTPUT 2V/div 20μs/div MAX4080TLARGE-SIGNAL TRANSIENT RESPONSEMAX4080 toc24INPUT 33mV/divOUTPUT 2V/div20μs/divMAX4080SLARGE-SIGNAL TRANSIENT RESPONSEMAX4080 toc25INPUT 400mV/div OUTPUT 2V/div 20μs/div MAX4081FLARGE-SIGNAL TRANSIENT RESPONSEMAX4080 toc26INPUT 100mV/div OUTPUT 2V/div 20μs/div MAX4081TLARGE-SIGNAL TRANSIENT RESPONSEMAX4080 toc27INPUT 33mV/divOUTPUT 2V/div20μs/divMAX4081SLARGE-SIGNAL TRANSIENT RESPONSETypical Operating Characteristics (continued)(V CC = V RS+= 48V, V SENSE = 0V, C LOAD = 20pF, R LOAD = ∞, T A = +25°C, unless otherwise noted.)M A X 4080/M A X 408176V , High-Side, Current-Sense Amplifiers with Voltage Output 8_______________________________________________________________________________________Typical Operating Characteristics (continued)(V CC = V RS+= 48V, V SENSE = 0V, C LOAD = 20pF, R LOAD = ∞, T A = +25°C, unless otherwise noted.)4μs/div V CC -TRANSIENT RESPONSEV CC 5V/divV OUT 1V/divV RS+ = 20V V CC = 20V STEP V REF1 = V REF2 = 2.5VV CC = 40VV CC = 20VMAX4080 toc29INPUT 500mV/divOUTPUT 2V/div 20μs/div MAX4080FSATURATION RECOVERY RESPONSE(V CC = 4.5V)MAX4080 toc30V CC (0 TO 10V)5V/divOUTPUT 2.5V/div100μs/divMAX4080T STARTUP DELAY (V SENSE = 250mV)Detailed DescriptionThe MAX4080/MAX4081 unidirectional and bidirectional high-side, current-sense amplifiers feature a 4.5V to 76V input common-mode range that is independent of supply voltage. This feature allows the monitoring of current out of a battery as low as 4.5V and also enables high-side current sensing at voltages greater than the supply voltage (V CC ). The MAX4080/MAX4081 monitors current through a current-sense resistor and amplifies the voltage across the resistor. The MAX4080 senses current unidirectionally, while the MAX4081 senses cur-rent bidirectionally.The 76V input voltage range of the MAX4080/MAX4081applies independently to both supply voltage (V CC )and common-mode, input-sense voltage (V RS+). High-side current monitoring does not interfere with the ground path of the load being measured, making the MAX4080/MAX4081 particularly useful in a wide range of high-voltage systems.Battery-powered systems require a precise bidirectional current-sense amplifier to accurately monitor the bat-tery’s charge and discharge. The MAX4081 charging current is represented by an output voltage from V REF to V CC , while discharge current is given from V REF to GND. Measurements of OUT with respect to V REF yield a positive and negative voltage during charge and dis-charge, as illustrated in Figure 1 for the MAX4081T.Current MonitoringThe MAX4080 operates as follows: current from the source flows through R SENSE to the load (Figure 2), cre-ating a sense voltage, V SENSE . Since the internal-sense amplifier’s inverting input has high impedance, negligible current flows through RG2 (neglecting the input bias current). Therefore, the sense amplifier’s inverting input voltage equals V SOURCE - (I LOAD )(R SENSE ). The ampli-fier’s open-loop gain forces its noninverting input to the same voltage as the inverting input. Therefore, the drop across RG1 equals V SENSE . The internal current mirror multiplies I RG1by a current gain factor, β, to give I A2= β✕IRG1. Amplifier A2 is used to convert the output current to a voltage and then sent through amplifier A3.Total gain = 5V/V for MAX4080F, 20V/V for the MAX4080T, and 60V/V for the MAX4080S.The MAX4081 input stage differs slightly from the MAX4080 (Figure 3). Its topology allows for monitoring of bidirectional currents through the sense resistor.When current flows from RS+ to RS-, the MAX4081matches the voltage drop across the external sense resistor, R SENSE , by increasing the current through the Q1 and RG1. In this way, the voltages at the input ter-minals of the internal amplifier A1 are kept constant and an accurate measurement of the sense voltage is achieved. In the following amplifier stages of the MAX4081, the output signal of amplifier A2 is level-shifted to the reference voltage (V REF = V REF1A =V REF1B ), resulting in a voltage at the output pin (OUT)MAX4080/MAX408176V , High-Side, Current-Sense Amplifiers withVoltage Output_______________________________________________________________________________________9Pin DescriptionM A X 4080/M A X 4081that swings above V REF voltage for positive-sense volt-ages and below V REF for negative-sense voltages.V OUT is equal to V REF when V SENSE is equal to zero.Set the full-scale output range by selecting R SENSE and the appropriate gain version of the MAX4080/MAX4081.76V , High-Side, Current-Sense Amplifiers with Voltage Output 10______________________________________________________________________________________Figure 1. MAX4081T OUT Transfer CurveFigure 3. MAX4081 Functional DiagramFigure 2. MAX4080 Functional DiagramMAX4080/MAX408176V , High-Side, Current-Sense Amplifiers withVoltage Output______________________________________________________________________________________11For the bidirectional MAX4081, the V OUT reference level is controlled by REF1A and REF1B. V REF is defined as the average voltage of V REF1A and V REF1B . Connect REF1A and REF1B to a low-noise, regulated voltage source to set the output reference level. In this mode,V OUT equals V REF1A when V SENSE equals zero (see Figure 4).Alternatively, connect REF1B to ground, and REF1A to a low-noise, regulated voltage source. In this case, the out-put reference level (V REF ) is equal to V REF1A divided by two. V OUT equals V REF1A /2 when V SENSE equals zero.In either mode, the output swings above the reference voltage for positive current-sensing (V RS+> V RS-). The output swings below the reference voltage for negative current-sensing (V RS+< V RS-).Recommended Component ValuesIdeally, the maximum load current develops the full-scale sense voltage across the current-sense resistor.Choose the gain needed to yield the maximum output voltage required for the application:V OUT = V SENSE ✕A Vwhere V SENSE is the full-scale sense voltage, 1000mV for gain of 5V/V, 250mV for gain of 20V/V, 100mV for gain of 60V/V, and A V is the gain of the device.In applications monitoring a high current, ensure that R SENSE is able to dissipate its own I 2R loss. If the resis-tor’s power dissipation is exceeded, its value may drift or it may fail altogether.The MAX4080/MAX4081 sense a wide variety of cur-rents with different sense-resistor values. Table 1 lists common resistor values for typical operation.M A X 4080/M A X 4081The full-scale output voltage is V OUT = R SENSE ✕I LOAD (MAX)✕A V , for the MAX4080 and V OUT = V REF ±R SENSE ✕ I LOAD(MAX)✕ A V for the MAX4081.V SENSE(MAX)is 1000mV for the 5V/V gain version,250mV for the 20V/V gain version, and 100mV for the 60V/V gain version.Choosing the Sense ResistorChoose R SENSE based on the following criteria:•Voltage Loss:A high R SENSE value causes the power-source voltage to degrade through IR loss. For minimal voltage loss, use the lowest R SENSE value.•Accuracy:A high R SENSE value allows lower cur-rents to be measured more accurately. This is due to offsets becoming less significant when the sense voltage is larger. For best performance, select R SENSE to provide approximately 1000mV (gain of 5V/V), 250mV (gain of 20V/V), or 100mV (gain of 60V/V) of sense voltage for the full-scale current in each application.•Efficiency and Power Dissipation:At high current levels, the I 2R losses in R SENSE can be significant.Take this into consideration when choosing the resistor value and its power dissipation (wattage)rating. Also, the sense resistor’s value might drift if it is allowed to heat up excessively.•Inductance:Keep inductance low if I SENSE has a large high-frequency component. Wire-wound resis-tors have the highest inductance, while metal film is somewhat better. Low-inductance, metal-film resis-tors are also available. Instead of being spiral-wrapped around a core, as in metal-film or wire-wound resistors, they are a straight band of metal and are available in values under 1Ω.Because of the high currents that flow through R SENSE ,take care to eliminate parasitic trace resistance from causing errors in the sense voltage. Either use a four-terminal current-sense resistor or use Kelvin (force and sense) PC board layout techniques.Dynamic Range ConsiderationAlthough the MAX4081 have fully symmetrical bidirec-tional V SENSE input capability, the output voltage range is usually higher from REF to V CC and lower from REF to GND (unless the supply voltage is at the lowest end of the operating range). Therefore, the user must con-sider the dynamic range of current monitored in both directions and choose the supply voltage and the refer-ence voltage (REF) to make sure the output swing above and below REF is adequate to handle the swings without clipping or running out of headroom.Power-Supply Bypassing and GroundingFor most applications, bypass V CC to GND with a 0.1µF ceramic capacitor. In many applications, V CC can be connected to one of the current monitor terminals (RS+or RS-). Because V CC is independent of the monitored voltage, V CC can be connected to a separate regulated supply.If V CC will be subject to fast-line transients, a series resistor can be added to the power-supply line of the MAX4080/MAX4081 to minimize output disturbance.This resistance and the decoupling capacitor reduce the rise time of the transient. For most applications, 1k Ωin conjunction with a 0.1µF bypass capacitor work well.The MAX4080/MAX4081 require no special considera-tions with respect to layout or grounding. Consideration should be given to minimizing errors due to the large charge and discharge currents in the system.76V , High-Side, Current-Sense Amplifiers with Voltage Output 12______________________________________________________________________________________Figure 4. MAX4081 Reference InputsPower ManagementThe bidirectional capability of the MAX4081 makes it an excellent candidate for use in smart battery packs. In the application diagram (Figure 5), the MAX4081 moni-tors the charging current into the battery as well as the discharge current out of the battery. The microcon-troller stores this information, allowing the system to query the battery's status as needed to make system power-management decisions.MAX4080/MAX408176V , High-Side, Current-Sense Amplifiers withVoltage Output______________________________________________________________________________________13Typical Operating CircuitChip InformationTRANSISTOR COUNT: 185PROCESS: BipolarFigure 5. MAX4081 Used In Smart-Battery ApplicationM A X 4080/M A X 408176V , High-Side, Current-Sense Amplifiers with Voltage Output 14______________________________________________________________________________________Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)MAX4080/MAX408176V , High-Side, Current-Sense Amplifiers withVoltage OutputMaxim cannot assume responsib ility for use of any circuitry other than circuitry entirely emb odied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________15©2002 Maxim Integrated Productsis a registered trademark of Maxim Integrated Products.Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)。

RTC-4543SAA0ROHS;RTC-4543SAA0;RTC-4543SBA;中文规格书,Datasheet资料

! Recommended Operating Conditions
Item
Power voltage Clock voltage Operating
t emp erature
Sym bol
VDD VCLK TOPR
Condition
-
Min. Typ. Max.
2.5 5.0 5.5 1.4 5.0 5.5 -40 +25 +85
Quartz devices have become crucial in the network environment where products are increasingly intended for broadband, ubiquitous applications and where various types of terminals can transfer information almost immediately via LAN and WAN on a global scale. Epson Toyocom Corporation addresses every single aspect within a network environment. The new corporation offers “Digital Convergence” solutions to problems arising with products for consumer use, such as, core network systems and automotive systems.
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MC-454AA725资料

©1997MOS INTEGRATED CIRCUITMC-454AA7254M-WORD BY 72-BIT SYNCHRONOUS DYNAMIC RAM MODULEUNBUFFERED TYPEDATA SHEETThe mark Z shows major revised points.Document No. M12668EJ2V0DS00 (2nd edition)Date Published January 1998 NS CP (K)Printed in JapanThe information in this document is subject to change without notice.DescriptionThe MC-454AA725 is a 4,194,304 words by 72 bits synchronous dynamic RAM module on which 18 pieces of 16M SDRAM : µPD4516421A are assembled.This module provides high density and large quantities of memory in a small space without utilizing the surface-mounting technology on the printed circuit board.Decoupling capacitors are mounted on power supply line for noise reduction.Features• 4,194,304 words by 72 bits organization (ECC type)• Clock frequency and clock access timeFamily/CAS latencyClock frequencyClock access timePower consumption (MAX.)(MAX.)(MAX.)Active Standby MC-454AA725-A80CL = 3125 MHz 6 ns 9,720 mW 129.6 mW CL = 283 MHz 7 ns 7,128 mW (CMOS level input)MC-454AA725-A10CL = 3100 MHz 7 ns 7,776 mW CL = 277 MHz 8 ns 5,832 mW MC-454AA725-A12CL = 383 MHz 8 ns 6,480 mW CL = 267 MHz9 ns4,536 mW• Fully Synchronous Dynamic RAM, with all signals referenced to a positive clock edge • Pulsed interface• Possible to assert random column address in every cycle • Dual internal banks controlled by BA0 (Bank Select)• Programmable burst-length : 1, 2, 4, 8 and full page • Programmable wrap sequence (sequential / interleave)• Programmable /CAS latency (2, 3)• Automatic precharge and controlled precharge • CBR (Auto) refresh and self refresh • All I/Os have 10 Ω ±10 % of series resistor • Single 3.3 V ± 0.3 V power supply • LVTTL compatible• 2,048 refresh cycles / 32 ms• Burst termination by Burst Stop command and Precharge command • 168-pin dual in-line memory module (Pin pitch = 1.27 mm)• Unbuffered type • Serial PD2Ordering InformationPart numberClock frequency(MAX.)PackageMounted devicesMC-454AA725F-A80125 MHz 168-pin Dual In-line Memory Module (Socket Type)18 pieces of µPD4516421AG5(400 mil TSOP (II))MC-454AA725F-A10100 MHzEdge connector : Gold plated 29.21 mm (1.15 inch) height[Double side]MC-454AA725F-A1283 MHz3Pin Configuration168-pin Dual In-line Memory Module Socket Type (Edge connector: Gold plated)[ MC-454AA725F ]A0 - A10:Address Inputs [ Row : A0 - A10, Column : A0 - A9 ]BA0 (A11):SDRAM Bank Select DQ0 - DQ63,CB0 - CB7:Data Inputs / Outputs CLK0 - CLK3:Clock Input CKE0, CKE1:Clock Enable Input /CS0, /CS2:Chip Select Input /RAS :Row Address Strobe /CAS :Column Address Strobe /WE :Write EnableDQMB0 - DQMB7:DQ Mask EnableSA0 - SA2:Address Input for EEPROM SDA :Serial Data I/O for PD SCL :Clock Input for PD V CC :Power Supply V SS :Ground NC: No Connection/XXX indicates active low signal.858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168V SS DQ32DQ33DQ34DQ35Vcc DQ36DQ37DQ38DQ39DQ40V SS DQ41DQ42DQ43DQ44DQ45Vcc CB5V SS NC NC Vcc /CAS DQMB4DQMB5NC /RAS V SS A1A3A5A7A9BA0 (A11)NC Vcc CLK1NC V SS CKE0NCDQMB6DQMB7NC Vcc NC NC CB6CB7V SS DQ48DQ49DQ50DQ51Vcc DQ52NC NC NC V SS DQ53DQ54DQ55V SS DQ56DQ57DQ58DQ59Vcc DQ60DQ61DQ62DQ63V SS CLK3NC SA0SA1SA2Vcc123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384V SS DQ0DQ1DQ2DQ3Vcc DQ4DQ5DQ6DQ7DQ8V SS DQ9DQ10DQ11DQ12DQ13Vcc DQ14DQ15CB0CB1V SS NC NC Vcc /WE DQMB0DQMB1/CS0NC V SS A0A2A4A6A8A10NC Vcc Vcc CLK0V SS NC /CS2DQMB2DQMB3NC Vcc NC NC CB2CB3V SS DQ16DQ17DQ18DQ19Vcc DQ20NC NC CKE1V SS DQ21DQ22DQ23V SS DQ24DQ25DQ26DQ27Vcc DQ28DQ29DQ30DQ31V SS CLK2NC NC SDA SCL VccDQ46DQ47CB44Block DiagramRemarks 1.The value of all resistors is 10 Ω except CKE1.2.D0 - D17 : µPD4516421A (2M words × 4 bits × 2 banks)DQMB 0/WE DQMB 2/CS0/CS2/WE DQM D0/CS DQ 0DQ 1DQ 2DQ 3DQ 3DQ 2DQ 1DQ 0/WE DQM D1/CS DQ 0DQ 1DQ 2DQ 3DQ 7DQ 6DQ 5DQ 4/WE DQM D2/CS DQ 0DQ 1DQ 2DQ 3DQ 11DQ 10DQ 9DQ 8/WE DQM D3/CS DQ 0DQ 1DQ 2DQ 3DQ 15DQ 14DQ 13DQ 12/WE DQM D4/CS DQ 0DQ 1DQ 2DQ 3CB 3CB 2CB 1CB 0/WE DQM D9/CS DQ 0DQ 1DQ 2DQ 3DQ 32DQ 33DQ 34DQ 35DQMB 4/WE DQM D10/CS DQ 0DQ 1DQ 2DQ 3DQ 36DQ 37DQ 38DQ 39/WE DQM D11/CS DQ 0DQ 1DQ 2DQ 3DQ 40DQ 41DQ 42DQ 43/WE DQM D12/CS DQ 0DQ 1DQ 2DQ 3DQ 44DQ 45DQ 46DQ 47/WE DQM D13/CS DQ 0DQ 1DQ 2DQ 3CB 4CB 5CB 6CB 7/WE DQM D5/CS DQ 0DQ 1DQ 2DQ 3DQ 19DQ 18DQ 17DQ 16/WE DQM D6/CS DQ 0DQ 1DQ 2DQ 3DQ 23DQ 22DQ 21DQ 20/WE DQM D7/CS DQ 0DQ 1DQ 2DQ 3DQ 27DQ 26DQ 25DQ 24/WE DQM D8/CS DQ 0DQ 1DQ 2DQ 3DQ 31DQ 30DQ 29DQ 28/WE DQM D14/CS DQ 0DQ 1DQ 2DQ 3DQ 48DQ 49DQ 50DQ 51/WE DQM D15/CS DQ 0DQ 1DQ 2DQ 3DQ 52DQ 53DQ 54DQ 55/WE DQM D16/CS DQ 0DQ 1DQ 2DQ 3DQ 56DQ 57DQ 58DQ 59/WE DQM D17/CS DQ 0DQ 1DQ 2DQ 3DQ 60DQ 61DQ 62DQ 63DQMB 1DQMB 5DQMB 3DQMB 6DQMB 7SERIAL PDSCLSDAA0A1A2SA0SA1SA2CLK0CLK1CLK3CLK2CLK : D0, D1CLK : D2, D3CLK : D5, D6, D13CLK : D7, D8CLK : D9, D10CLK : D4, D11, D12CLK : D14, D15CLK : D16, D17/RAS /RAS: D0 - D17/CAS /CAS: D0 - D17CKE0CKE: D0 - D8A0 - A10A0 - A10: D0 - D17BA0A11 : D0 - D17V CC D0 - D17D0 - D17V SS10CKE1CKE : D9 - D17V CCCElectrical Specifications• All voltages are referenced to V SS (GND).• After power up, wait more than 100 µs and then, execute power on sequence and auto refresh before proper device operation is achieved.Absolute Maximum RatingsParameter Symbol Condition Rating Unit Voltage on power supply pin relative to GND V CC–1.0 to +4.6V Voltage on input pin relative to GND V T–1.0 to +4.6V Short circuit output current I O50mA Power dissipation P D18W Operating ambient temperature T A0 to +70°C Storage temperature T stg–55 to +125°C Caution Exposing the device to stress above those listed in Absolute Maximum Ratings could cause permanent damage. The device is not meant to be operated under conditions outside the limits described in the operational section of this specification. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability.Recommended Operating ConditionsParameter Symbol Condition MIN.TYP.MAX.Unit Supply voltage V CC 3.0 3.3 3.6V High level input voltage V IH 2.0 4.6V Low level input voltage V IL−0.3+0.8V Operating ambient temperature T A070°CCapacitance (T A = 25 °C, f = 1 MHz)Parameter Symbol Test condition MIN.TYP.MAX.Unit Input capacitance C I1A0 - A10, BA0 (A11), /RAS, /CAS, /WE90pFC I2CLK0, CLK136C I3CLK2, CLK340C I4CKE0, CKE150C I5/CS0, /CS250C I6DQMB0 - DQMB720Data input / output capacitance C I/O DQ0 - DQ63, CB0 - CB710pF5Parameter Symbol Test condition Grade MIN.MAX.Unit Notes Operating current I CC1Burst length = 1/CAS latency= 2-A801,710mA1t RC≥t RC (MIN.), I O = 0mA-A101,530-A121,530/CAS latency= 3-A801,800-A101,620-A121,620 Precharge standby current in I CC2P CKE ≤ V IL (MAX.), t CK = 15ns54mApower down mode I CC2PS CKE ≤ V IL (MAX.), t CK = ∞36Precharge standby current in I CC2N CKE ≥V IH (MIN.), t CK = 15ns, /CS≥V IH (MIN.),450mAnon power down mode Input signals are changed one time during 30ns.I CC2NS CKE ≥V IH (MIN.), t CK = ∞ ,108Input signals are stable.Active standby current in I CC3P CKE ≤ V IL (MAX.), t CK = 15ns54mApower down mode I CC3PS CKE ≤ V IL (MAX.), t CK = ∞36Active standby current in I CC3N CKE ≥V IH (MIN.), t CK = 15ns, /CS ≥V IH (MIN.),504mAnon power down mode Input signals are changed one time during 30ns.I CC3NS CKE ≥V IH (MIN.), t CK = ∞ ,180Input signals are stable.Operating current I CC4t CK≥t CK (MIN.)/CAS latency = 2-A801,980mA2 (Burst mode)I O = 0mA-A101,620-A121,260/CAS latency = 3-A802,700-A102,160-A121,8005Refresh current I CC5t RC = 100 ns, t CK = MIN.1,620mA3 Self refresh current I CC6CKE ≤ 0.2V36mAInput leakage current I I (L)V I = 0 to 3.6V,All other pins not under test = 0 V–90+90µAInput leakage current (CKE1)–500+500Output leakage current I O (L)D OUT is disabled, V O = 0 to 3.6V–5+5µAHigh level output voltage V OH I O = –2.0mA 2.4VLow level output voltage V OL I O = +2.0mA0.4VNotes 1.I CC1 depends on output loading and cycle rates. Specified values are obtained with the output open. In addition to this, I CC1 is measured on condition that addresses are changed only one time during t CK (MIN.).2.I CC4 depends on output loading and cycle rates. Specified values are obtained with the output open. Inaddition to this, I CC4 is measured on condition that addresses are changed only one time during t CK (MIN.).3.I CC5 is measured on condition that addresses are changed only one time during t CK (MIN.).67AC Characteristics Test Conditions •AC measurements assume t T = 1 ns.•Reference level for measuring timing of input signals is 1.4 V. Transition times are measured between V IH and V IL .•If t T is longer than 1 ns, reference level for measuring timing of input signals is V IH (MIN.) and V IL (MAX.).•An access time is measured at 1.4 V.t CKt CHt CL2.0 V 1.4 V 0.8 VCLK2.0 V 1.4 V 0.8 VInputt SETUP t HOLDOutputt AC t OH8ParameterSymbol-A80-A10-A12Unit NoteMIN.MAX.MIN.MAX.MIN.MAX.Clock cycle time/CAS latency = 3t CK38(125 MHz)10(100 MHz)12(83 MHz)ns /CAS latency = 2t CK212(83 MHz)13(77 MHz)15(67 MHz)ns Access time from CLK/CAS latency = 3t AC3678ns 1/CAS latency = 2t AC2789ns 1CLK high level width t CH 3 3.54ns CLK low level width t CL 3 3.54ns Data-out hold timet OH 333ns 1Data-out low-impedance time t LZ 000nsData-out high-impedance time/CAS latency = 3t HZ3363636ns /CAS latency = 2t HZ2373737ns Data-in setup time t DS 2.0 2.5 3.0ns Data-in hold time t DH 1.0 1.0 1.5ns Address setup time t AS 2.0 2.5 3.0ns Address hold time t AH 1.0 1.0 1.5ns CKE setup time t CKS 2.0 2.5 3.0ns CKE hold timet CKH 1.0 1.0 1.5ns CKE setup time (Power down exit)t CKSP 2.0 2.5 3.0ns Command (/CS0, /CS2, /RAS, /CAS, /WE,DQMB0 - DQMB7) setup timet CMS2.02.53.0nsCommand (/CS0, /CS2, /RAS, /CAS, /WE,DQMB0 - DQMB7) hold timet CMH1.01.01.5nsNote 1. Output loadRemark These specifications are applied to the monolithic device.OutputZ = 50 Ω1.4 V50 pF50 Ω5Parameter Symbol-A80-A10-A12Unit NoteMIN.MAX.MIN.MAX.MIN.MAX.REF to REF/ACT command period t RC809090nsACT to PRE command period t RAS48120,00060120,00060120,000nsPRE to ACT command period t RP242630nsDelay time ACT to READ/WRITE command t RCD242630nsACT (0) to ACT (1) command period t RRD162024nsData-in to PRE command period t DPL81012nsData-in to ACT (REF) command period (Auto precharge)/CAS latency = 3t DAL31CLK+241CLK+261CLK+30ns/CAS latency = 2t DAL21CLK+241CLK+261CLK+30nsMode register set cycle time t RSC222CLK Transition time t T0.530130130nsRefresh time t REF323232ms910Serial PD(1/2)Byte No.Function DescribedHex Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0Notes 0Defines the number of bytes written into serial PD memory80H1128 bytes1Total number of bytes of serial PD memory 08H1256 bytes2Fundamental memory type 04H 00000100SDRAM 3Number of rows 0BH 0000101111 rows 4Number of columns 0AH 0000101010 columns 5Number of banks 01H 00000001 1 banks 6Data width48H 010******* bits 7Data width (continued)00H 0000000008Voltage interface 01H 00000001LVTTL 9CL = 3 cycle time-A8080H 100000008 ns -A10A0H 1010000010 ns -A12C0H 1100000012 ns 10CL = 3 access time-A8060H 01100000 6 ns -A1070H 011100007 ns -A1280H 100000008 ns 11DIMM configuration type 02H 00000010ECC 12Refresh rate / type 80H 10000000Normal 13SDRAM width04H 00000100×414Error checking SDRAM width 04H 00000100×415Minimum clock delay 01H 00000001 1 clock 16Burst length supported8FH 100011111, 2, 4, 8, F 17Number of banks on each SDRAM 02H 00000010 2 banks 18/CAS latency supported 06H 000001102, 319/CS latency supported 01H 00000001020/WE latency supported 01H 00000001021SDRAM module attributes 00H 0000000022SDRAM device attributes : General 0EH 0000111023CL = 2 cycle time-A80C0H 1100000012 ns -A10D0H 1101000013 ns -A12F0H 1111000015 ns 24CL = 2 access time-A8070H 011100007 ns -A1080H 100000008 ns -A1290H 100100009 ns 25-2600H(2/2) Byte No.Function Described Hex Bit 7Bit 6Bit 5Bit 4Bit 3Bit 2Bit 1Bit 0Notes 27t RP (MIN.)-A8018H0001100024 ns-A101AH0001101026 ns-A121EH0001111030 ns 28t RRD (MIN.)-A8010H0001000016 ns-A1014H0001010020 ns-A1218H0001100024 ns 29t RCD (MIN.)-A8018H0001100024 ns-A101AH0001101026 ns-A121EH0001111030 ns 30t RAS (MIN.)-A8030H0011000048 ns-A103CH0011110060 ns-A123CH0011110060 ns 31Module bank density08H0000100032M bytes32-6100H0000000062SPD revision01H00000001163Checksum for bytes 0 - 62-A80A6H10100110-A100AH00001010-A1276H0111011064-71Manufacture’s JEDEC ID code72Manufacturing location73-90Manufacture’s P/N91-92Revision code93-94Manufacturing date95-98Assembly serial number99-125Mfg specific126Intel specification frequency66H0110011066 MHz 127Intel specification /CAS latency support06H000001102, 3Timing ChartPlease refer to NEC Synchronous DRAM Data sheet.1112Package Drawing168 PIN DUAL IN-LINE MODULE (SOCKET TYPE)NMTUP DITEM MILLIMETERS INCHES U 4.0 MIN.0.157 MIN.S T 1.27±0.10.05±0.004A B 11.43133.35±0.13 5.250±0.0060.450C D 6.3536.83 1.4500.250E G6.3554.61 2.1500.250H1.27 (T.P.)0.050 (T.P.)I 8.890.350J 24.4950.964K 42.18 1.661L 17.780.700M N R 4.0±0.10.157Q V 0.25 MAX.0.010 MAX.R2.0R0.079+0.005–0.0044.0 MAX.0.158 MAX.3.00.118P1.00.039Y 3.0 MIN.0.118 MIN.W X2.54 MIN.1.0±0.050.100±0.004Z3.0 MIN.0.118 MIN.0.039+0.003–0.002WGVXYRSLQZJH CBK GIBD EA(OPTIONAL HOLES)A29.21 1.150detail ofpart detail of partUB3PD1314NOTES FOR CMOS DEVICES1PRECAUTION AGAINST ESD FOR SEMICONDUCTORSNote:Strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and ultimately degrade the device operation. Steps mustbe taken to stop generation of static electricity as much as possible, andquickly dissipate it once, when it has occurred. Environmental control mustbe adequate. When it is dry, humidifier should be used. It is recommendedto avoid using insulators that easily build static electricity. Semiconductordevices must be stored and transported in an anti-static container, staticshielding bag or conductive material. All test and measurement toolsincluding work bench and floor should be grounded. The operator shouldbe grounded using wrist strap. Semiconductor devices must not be touchedwith bare hands. Similar precautions need to be taken for PW boards withsemiconductor devices on it.2HANDLING OF UNUSED INPUT PINS FOR CMOSNote:No connection for CMOS device inputs can be cause of malfunction. If no connection is provided to the input pins, it is possible that an internal inputlevel may be generated due to noise, etc., hence causing malfunction. CMOSdevice behave differently than Bipolar or NMOS devices. Input levels ofCMOS devices must be fixed high or low by using a pull-up or pull-downcircuitry. Each unused pin should be connected to V DD or GND with aresistor, if it is considered to have a possibility of being an output pin. Allhandling related to the unused pins must be judged device by device andrelated specifications governing the devices.3STATUS BEFORE INITIALIZATION OF MOS DEVICESNote:Power-on does not necessarily define initial status of MOS device. Produc-tion process of MOS does not define the initial operation status of thedevice. Immediately after the power source is turned ON, the devices withreset function have not yet been initialized. Hence, power-on does notguarantee out-pin levels, I/O settings or contents of registers. Device is notinitialized until the reset signal is received. Reset operation must beexecuted imme-diately after power-on for devices having reset function.15[MEMO]CAUTION FOR HANDLING MEMORY MODULESWhen handling or inserting memory modules, be sure not to touch any components on the modules, such as the memory IC, chip capacitors and chip resistors. It is necessary to avoid undue mechanical stress on these components to prevent damaging them.When re-packing memory modules, be sure the modules are NOT touching each other. Modules in contact with other modules may cause excessive mechanical stress, which may damage the modules.No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Corporation. NEC Corporation assumes no responsibility for any errors which may appear in this document.NEC Corporation does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from use of a device described herein or any other liability arising from use of such device. No license, either express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Corporation or others.While NEC Corporation has been making continuous effort to enhance the reliability of its semiconductor devices, the possibility of defects cannot be eliminated entirely. To minimize risks of damage or injury to persons or property arising from a defect in an NEC semiconductor device, customers must incorporate sufficient safety measures in its design, such as redundancy, fire-containment, and anti-failure features.NEC devices are classified into the following three quality grades:"Standard", "Special", and "Specific". The Specific quality grade applies only to devices developed based ona customer designated "quality assurance program" for a specific application. The recommended applicationsof a device depend on its quality grade, as indicated below. Customers must check the quality grade of each device before using it in a particular application.Standard: Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronicequipment and industrial robotsSpecial: Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designedfor life support)Specific: Aircrafts, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems or medical equipment for life support, etc.The quality grade of NEC devices is "Standard" unless otherwise specified in NEC's Data Sheets or Data Books.If customers intend to use NEC devices for applications other than those specified for Standard quality grade, they should contact an NEC sales representative in advance.Anti-radioactive design is not implemented in this product.M4 96. 5。

MAX3051EKA-T中文资料

General DescriptionThe MAX3051 interfaces between the CAN protocol controller and the physical wires of the bus lines in a controller area network (CAN). The MAX3051 provides differential transmit capability to the bus and differential receive capability to the CAN controller. The MAX3051is primarily intended for +3.3V single-supply applica-tions that do not require the stringent fault protection specified by the automotive industry (ISO 11898).The MAX3051 features four different modes of opera-tion: high-speed, slope-control, standby, and shutdown mode. High-speed mode allows data rates up to 1Mbps. The slope-control mode can be used to program the slew rate of the transmitter for data rates of up to 500kbps. This reduces the effects of EMI, thus allowing the use of unshielded twisted or parallel cable.In standby mode, the transmitter is shut off and the receiver is pulled high, placing the MAX3051 in low-current mode. In shutdown mode, the transmitter and receiver are switched off.The MAX3051 input common-mode range is from -7V to +12V, exceeding the ISO 11898 specification of -2V to +7V. These features, and the programmable slew-rate limiting, make the part ideal for nonautomotive, harsh environments. The MAX3051 is available in 8-pin SO and SOT23 packages and operates over the -40°C to +85°C extended temperature range.ApplicationsPrinters JetLinkIndustrial Control and Networks Telecom Backplane Consumer ApplicationsFeatures♦Low +3.3V Single-Supply Operation ♦Wide -7V to +12V Common-Mode Range ♦Small SOT23 Package♦Four Operating ModesHigh-Speed Operation Up to 1MbpsSlope-Control Mode to Reduce EMI (Up to 500kbps)Standby ModeLow-Current Shutdown Mode ♦Thermal Shutdown ♦Current LimitingMAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver________________________________________________________________Maxim Integrated Products 1Pin ConfigurationOrdering Information19-3274; Rev 0; 5/04For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Typical Operating Circuit at end of data sheet.M A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +3.3V ±5%, R L = 60Ω, C L = 100pF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +3.3V and T A =Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V CC to GND..............................................................-0.3V to +6V TXD, RS, SHDN to GND...........................................-0.3V to +6V RXD to GND .............................................................-0.3V to +6V CANH, CANL to GND..........................................-7.5V to +12.5V Continuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.9mW/°C above +70°C)...................470mW 8-Pin SOT23 (derate 9.7mW/°C above +70°C).............774mWOperating Temperature Range ...........................-40°C to +85°C Maximum Junction Temperature.....................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature Range (soldering, 10s)......................+300°CMAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)(V CC = +3.3V ±5%, R L = 60Ω, C L = 100pF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +3.3V and T A =M A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 4_______________________________________________________________________________________Note 2:No other devices on the BUS.Note 3:BUS externally driven.TIMING CHARACTERISTICS(V CC = +3.3V ±5%, R L = 60Ω, C L = 100pF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +3.3V and T A =+25°C.)MAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver_______________________________________________________________________________________5Figure 1. Timing Diagram Figure 2. Timing Diagram for Standby SignalFigure 3. Timing Diagram for Shutdown Signal Figure 4. Timing Diagram for Shutdown-to-Standby SignalTiming DiagramsSLEW RATE vs. R RS AT 100kbpsM A X 3051t o c 01R RS (k Ω)S L E W R A T E (V /µs )18016014012010080604020510152025303500200M A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 6_______________________________________________________________________________________SUPPLY CURRENT vs. DATA RATEDATA RATE (kbps)S U P P L Y C U R R E N T (m A )8006004002001316192225101000SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE (SHDN = V CC )M A X 3051t o c 03TEMPERATURE (°C)S H U T D O W N S U P P L Y C U R R E N T (n A )603510-15204060801001200-4085STANDBY SUPPLY CURRENT vs. TEMPERATURE (RS = V CC )M A X 3051t o c 04TEMPERATURE (°C)S T A N D B Y S U P P L Y C U R R E N T (µA )603510-158.59.09.510.010.511.08.0-4085RECEIVER PROPAGATION DELAY vs.TEMPERATURETEMPERATURE (°C)R E C E I V E R P R O P A G A T I O N D E L A Y (n s )603510-155101520253035404550-4085DRIVER PROPAGATION DELAY vs.TEMPERATURETEMPERATURE (°C)D R I VE R P R O P A G A T I O N D E L A Y (n s )603510-1510203040500-4085RECEIVER OUTPUT LOW vs.OUTPUT CURRENTOUTPUT CURRENT (mA)V O L T A G E R X D (V )4035510152520300.20.40.60.81.01.21.41.60045Typical Operating Characteristics(V CC = +3.3V, R L = 60Ω, C L = 100pF, T A = +25°C, unless otherwise specified.)MAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver_______________________________________________________________________________________7RECEIVER PROPAGATION DELAYRXD 1v/divCAHN - CANL200ns/divRS = GNDDRIVER PROPAGATION DELAYM A X 3051t o c 11TXD 2V/divR RS = 24k ΩR RS = 75k ΩR RS = 100k Ω200ns/divDRIVER PROPAGATION DELAYTXD 1V/divCAHN - CANL200ns/divRS = GNDLOOPBACK PROPAGATION DELAYvs. R RSM A X 3051t o c 13R RS (k Ω)L O O P B A C K P R O P A G A T I O N D E L A Y (n s )180160140120100806040202004006008001000120000200Typical Operating Characteristics (continued)(V CC = +3.3V, R L = 60Ω, C L = 100pF, T A = +25°C, unless otherwise specified.)RECEIVER OUTPUT HIGH vs.OUTPUT CURRENTM A X 3051t o c 08OUTPUT CURRENT (mA)R E C E I V E R O U T P U T H I G H (V C C - R X D ) (V )71235460.20.40.60.81.01.21.41.61.8008DIFFERENTIAL VOLTAGE vs.DIFFERENTIAL LOADDIFFERENTIAL LOAD R L (Ω)D I F FE R E N T I A L V O L T A G E (V )2001000.51.01.52.02.53.03.50300M A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 8_______________________________________________________________________________________Detailed DescriptionFigure 5. MAX3051 Functional DiagramMAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN TransceiverDetailed DescriptionThe MAX3051 interfaces between the CAN protocol controller and the physical wires of the bus lines in a CAN. It provides differential transmit capability to the bus and differential receive capability to the CAN con-troller. It is primarily intended for +3.3V single-supply applications that do not require the stringent fault pro-tection specified by the automotive industry (ISO 11898) The MAX3051 features four different modes of opera-tion: high-speed, slope-control, standby, and shutdown mode. High-speed mode allows data rates up to 1Mbps. The slope-control mode can be used to pro-gram the slew rate of the transmitter for data rates of up to 500kbps. This reduces the effects of EMI, thus allow-ing the use of unshielded twisted or parallel cable. In standby mode, the transmitter is shut off and the receiver is pulled high, placing the MAX3051 in low-current mode. In shutdown mode, the transmitter and receiver are switched off.The MAX3051 input common-mode range is from -7V to +12V, exceeding the ISO 11898 specification of -2V to +7V. These features, and the programmable slew-rate limiting, make the part ideal for nonautomotive, harsh environments.The transceivers operate from a single +3.3V supply and draw 35µA of supply current in dominant state and 2µA in recessive state. In standby mode, supply cur-rent is reduced to 8µA. In shutdown mode, supply cur-rent is less than 1µA.CANH and CANL are output short-circuit current limited and are protected against excessive power dissipation by thermal-shutdown circuitry that places the driver outputs into a high-impedance state.TransmitterThe transmitter converts a single-ended input (TXD)from the CAN controller to differential outputs for the bus lines (CANH, CANL). The truth table for the trans-mitter and receiver is given in Table 1.ReceiverThe receiver reads differential inputs from the bus lines (CANH, CANL) and transfers this data as a single-ended output (RXD) to the CAN controller. It consists of a comparator that senses the difference V DIFF = (CANH - CANL) with respect to an internal threshold of +0.75V.If this V DIFF is greater than 0.75, a logic-low is present at RXD. If V DIFF is less than 0.75V, a logic-high is present.The receiver always echoes the CAN BUS data.The CANH and CANL common-mode range is -7V to +12V. RXD is logic-high when CANH and CANL are shorted or terminated and undriven.Mode SelectionHigh-Speed ModeConnect RS to ground to set the MAX3051 to high-speed mode. When operating in high-speed mode, the MAX3051 can achieve transmission rates of up to 1Mbps. In high-speed mode, use shielded twisted pair cable to avoid EMI problems.Slope-Control ModeConnect a resistor from RS to ground to select slope-control mode (Table 2). In slope-control mode, CANH and CANL slew rates are controlled by the resistor con-nected to the RS pin. Maximum transmission speeds are controlled by R RS and range from 40kbps to 500kbps. Controlling the rise and fall slopes reduces EMI and allows the use of an unshielded twisted pair or a parallel pair of wires as bus lines. The equation for selecting the resistor value is given by:R RS (k Ω) ≈12000 / (maximum speed in kbps)See the Slew Rate vs. RRS graph in the Typical Operating Characteristics .Standby ModeIf a logic-high is applied to RS, the MAX3051 enters a low-current standby mode. In this mode, the transmitterM A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver10______________________________________________________________________________________is switched off and the receiver is switched to a low-current/low-speed state. If dominant bits are detected,RXD switches to low level. The microcontroller should react to this condition by switching the transceiver back to normal operation.When the MAX3051 enters standby mode, RXD goes high for 4µs (max) regardless of the BUS state.However, after 4µs, RXD goes low only when the BUS is dominant, otherwise RXD remains high (when the BUS is recessive). For proper measurement of standby-to-receiver active time (t SBRXDL ), the BUS should be in dominant state (see Figure 2).ShutdownDrive SHDN high to enter shutdown mode. Connect SHDN to ground or leave floating for normal operation.Thermal ShutdownIf the junction temperature exceeds +160°C, the device is switched off. The hysteresis is approximately 25°C,disabling thermal shutdown once the temperature drops below 135°C. In thermal shutdown, CANH and CANL go recessive and all IC functions are disabled.Applications InformationReduced EMI and ReflectionsIn slope-control mode, the CANH and CANL outputs are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. In multidrop CAN applications, it is important to main-tain a direct point-to-point wiring scheme. A single pair of wires should connect each element of the CAN bus,and the two ends of the bus should be terminated with 120Ωresistors (Figure 6). A star configuration should never be used.Any deviation from the point-to-point wiring scheme creates a stub. The high-speed edge of the CAN data on a stub can create reflections back down the bus.These reflections can cause data errors by eroding the noise margin of the system.Although stubs are unavoidable in a multidrop system,care should be taken to keep these stubs as small as possible, especially in high-speed mode. In slope-con-trol mode, the requirements are not as rigorous, but stub length should still be minimized.Power Supply and BypassingThe MAX3051 requires no special layout considerations beyond common practices. Bypass V CC to GND with a 0.1µF ceramic capacitor mounted close to the IC with short lead lengths and wide trace widths.MAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN Transceiver______________________________________________________________________________________11Chip InformationTRANSISTOR COUNT: 1024PROCESS: BiCMOSTypical Operating CircuitM A X 3051+3.3V , 1Mbps, Low-Supply-Current CAN Transceiver 12______________________________________________________________________________________Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)MAX3051+3.3V , 1Mbps, Low-Supply-CurrentCAN TransceiverMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________13©2004 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)S O T 23, 8L .E P S。

1.5SMC47AT3G(ONSEMI)中文数据手册「EasyDatasheet」

67
5
17.1 18 18.9 1
25.2
59.5
5
19 20 21
1
27.7
54
1.5SMC22AT3G
22A
18.8
5
20.9 22 23.1 1
30.6
49
1.5SMC24AT3G
24A
20.5
5
22.8 24 25.2 1
33.2
45
1.5SMC27AT3G
27A
23.1
5
25.7 27 28.4 1
5
71.3 75 78.8 1
103
14.6
5
77.9 82 86.1 1
113
13.3
5
86.5 91 95.5 1
125
12
产品性能参数显示在电气特性的上市测试条件,除非另有说明.产品的性能可能不被电气特性来表示,如果在不同条件下操作.
6.瞬态抑制器是根据工作峰值反向电压通常选择（V
直流或连续高峰运行电压电平.
0.092 0.094 0.096 0.097
0.098 0.099
0.1 0.101
0.101 0.102 0.103 0.104
0.104 0.105 0.105 0.106
3
芯片中文手册,看全文,戳
1.5SMC6.8AT 3G系列 ,SZ1.5SMC6.8AT 3G系列
The SMC series is designed to protect voltage sensitive components from high voltage, high energy transients.他们有 excellent clamping capability, high surge capability, low zener impedance and fast response time. The SMC series is supplied in ON Semiconductor’s exclusive, cost-effective, highly reliable SURMETIC ® package and is ideally suited for use in communication systems, automotive, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/consumer applications.

CD4543中文资料

Data sheet acquired from Harris Semiconductor SCHS086IMPORTANT NOTICETexas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability.TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements.CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE FULLY AT THE CUSTOMER’S RISK.In order to minimize risks associated with the customer’s applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards.TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI’s publication of information regarding any third party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.Copyright © 1998, Texas Instruments Incorporated。

MAX3485ESA-T中文资料

Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if both inputs are open circuit.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC) ...............................................................7V Control Input Voltage (RE, DE) ...................................-0.3V to 7V Driver Input Voltage (DI) .............................................-0.3V to 7V Driver Output Voltage (A, B, Y, Z)..........................-7.5V to 12.5V Receiver Input Voltage (A, B) ................................-7.5V to 12.5V Receiver Output Voltage (RO)....................-0.3V to (VCC + 0.3V) Continuous Power Dissipation (TA = +70°C)

MAX3243EEAI-T中文资料

MAX3221E/MAX3223E/MAX3243E †
Ordering Information
PART MAX3221ECTE MAX3221ECUE MAX3221ECAE MAX3221EEAE MAX3221EETE MAX3221EEUE MAX3223ECPP MAX3223ECAP MAX3223ECUP MAX3223ECTP MAX3223EEPP MAX3223EEAP MAX3223EEUP MAX3223EETP TEMP RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C PINPACKAGE 16 Thin QFN-EP (5mm x 5mm) 16 TSSOP 16 SSOP 16 Thin QFN-EP (5mm x 5mm) 20 Plastic DIP 20 SSOP 20 TSSOP PKG CODE T1655-2 — — — T1655-2 — — — —
Pin Configurations appear at end of data sheet. Typical Operating Circuits appear at end of data sheet.
MAX3223E MAX3243E
AutoShutdown and ntegrated Products, Inc.
VCC to GND ..............................................................-0.3V to +6V V+ to GND (Note 1) ..................................................-0.3V to +7V V- to GND (Note 1) ...................................................+0.3V to -7V V+ + |V-| (Note 1) .................................................................+13V Input Voltages T_IN, EN, FORCEON, FORCEOFF to GND ............-0.3V to +6V R_IN to GND ......................................................................±25V Output Voltages T_OUT to GND................................................................±13.2V R_OUT, R2OUTB, INVALID to GND .........-0.3V to (VCC + 0.3V) Short-Circuit Duration T_OUT to GND .........................................................Continuous Continuous Power Dissipation (TA = +70°C) 16-Pin SSOP (derate 7.14mW/°C above +70°C) ...........571mW 16-Pin TSSOP (derate 9.4mW/°C above +70°C) ........754.7mW 16-Pin TQFN (derate 20.8mW/°C above +70°C) ......1666.7mW 20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW 20-Pin SSOP (derate 8.00mW/°C above +70°C) ...........640mW 20-Pin TSSOP (derate 10.9mW/°C above +70°C) .........879mW 20-Pin TQFN (derate 21.3mW/°C above +70°C) ......1702.1mW 28-Pin SSOP (derate 9.52mW/°C above +70°C)............762mW 28-Pin TSSOP (derate 12.8mW/°C above +70°C) .......1026mW Operating Temperature Ranges MAX32_ _EC_ _ ....................................................0°C to +70°C MAX32_ _EE_ _..................................................-40°C to +85°C Storage Temperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10s) .................................+300°C

max3485中文资料

max3485eesa + T概述Max3485eesa + T是3.3V电源±15kV ESD保护，真正的RS485 / RS422收发器，采用8引脚nsoic封装。

该低功耗收发器包含一个驱动器和一个接收器。

max3485e传输速率高达15Mbps。

它具有增强的静电保护。

所有发送器输出和接收器输入均具有±15kV保护，并通过IEC 1000-4-2气隙放电；±8Kv保护是通过IEC 1000-4-2接触放电，±15kV保护是通过人体模型。

驱动器受到短路电流的限制，并通过将驱动器输出置于高阻抗状态的热关断电路来防止过多的功耗。

接收器输入具有故障安全功能，如果两个输入均打开，则提供逻辑高电平输出。

Max3485e适用于EMI敏感应用，集成服务，数字网络和数据包交换电源电压范围：3V至3.6V工作温度范围-40°C至85°C半双工通讯该操作由单个+ 3.3V电源供电，无电荷泵兼容+ 5V逻辑2Na小电流关闭模式共模输入电压范围：-7V至+ 12V工业标准75176引脚输出驱动器/接收器启用功能工业控制LAN，ISDN，低功耗RS-485 / RS-422收发器;分组交换;电信;用于EMI敏感应用的收发器Max3483，max3485，max3486，max3488，max3490和max3491是用于RS-485和RS-422通信的3.3V低功耗收发器，每个收发器都有一个驱动器和一个接收器。

Max3483和max3488具有有限速率驱动器，可以降低EMI并减少由于端子匹配电缆不合适而引起的反射，从而实现高达250kbps的无错误数据传输。

由于其有限的摆幅速率，Max3486可以实现最大2.5mbps 的传输速率。

Max3485，max3490和max3491可以实现高达10Mbps的传输速率。

驱动器具有短路电流限制，并且可以通过热关断电路将驱动器的输出设置为高阻状态，以防止过多的功率损耗。

MAX3443EASA+中文资料

General DescriptionThe MAX3440E–MAX3444E fault-protected RS-485 and J1708 transceivers feature ±60V protection from signal faults on communication bus lines. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1/4-unit-load receiver input impedance allows up to 128 trans-ceivers on a single bus. The devices operate from a 5V supply at data rates of up to 10Mbps. True fail-safe inputs guarantee a logic-high receiver output when the receiver inputs are open, shorted, or connected to an idle data line.Hot-swap circuitry eliminates false transitions on the data bus during circuit initialization or connection to a live backplane. Short-circuit current-limiting and ther-mal shutdown circuitry protect the driver against exces-sive power dissipation, and on-chip ±15kV ESD protection eliminates costly external protection devices.The MAX3440E–MAX3444E are available in 8-pin SO and PDIP packages and are specified over industrial and automotive temperature ranges.ApplicationsRS-422/RS-485 Communications Truck and Trailer Applications Industrial NetworksTelecommunications Systems Automotive Applications Features♦±15kV ESD Protection ♦±60V Fault Protection♦Guaranteed 10Mbps Data Rate (MAX3441E/MAX3443E)♦Hot Swappable for Telecom Applications ♦True Fail-Safe Receiver Inputs♦Enhanced Slew-Rate-Limiting Facilitates Error-Free Data Transmission(MAX3440E/MAX3442E/MAX3444E)♦Allow Up to 128 Transceivers on the Bus ♦-7V to +12V Common-Mode Input Range♦Automotive Temperature Range (-40°C to +125°C)♦Industry-Standard PinoutMAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers________________________________________________________________Maxim Integrated Products 1Pin Configurations and Typical Operating CircuitsOrdering Information19-2666; Rev 1; 12/05For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at .Ordering Information continued at end of data sheet.M A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Voltages Referenced to GNDV CC ........................................................................................+7V FAULT, DE/RE, RE , DE, DE , DI, TXD..........-0.3V to (V CC + 0.3V)A, B (Note 1)........................................................................±60V RO..............................................................-0.3V to (V CC + 0.3V)Short-Circuit Duration (RO, A, B)...............................Continuous Continuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.9mW/°C above +70°C)..................471mW 8-Pin PDIP (derate 9.09mW/°C above +70°C).............727mWOperating Temperature RangesMAX344_EE_ _...............................................-40°C to +85°C MAX344_EA_ _.............................................-40°C to +125°C Storage Temperature Range.............................-65°C to +150°C Junction Temperature......................................................+150°C Lead Temperature (soldering, 10s).................................+300°CDC ELECTRICAL CHARACTERISTICSNote 1:A, B must be terminated with 54Ωor 100Ωto guarantee ±60V fault protection.MAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 TransceiversDC ELECTRICAL CHARACTERISTICS (continued)(V = +4.75V to +5.25V, T = T to T , unless otherwise noted. Typical values are at V = +5V and T = +25°C.)M A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers 4_______________________________________________________________________________________SWITCHING CHARACTERISTICS (MAX3440E/MAX3442E/MAX3444E)MAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers_______________________________________________________________________________________5SWITCHING CHARACTERISTICS (MAX3441E/MAX3443E)(V CC = +4.75V to +5.25V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +5V and T A = +25°C.)Note 3:The short-circuit output current applies to peak current just before foldback current limiting; the short-circuit foldback outputcurrent applies during current limiting to allow a recovery from bus contention.M A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers 6_______________________________________________________________________________________RECEIVER OUTPUT CURRENT vs. OUTPUT LOW VOLTAGEM A X 3443E t o c 04OUTPUT LOW VOLTAGE (V)R E C E I V E R O U T P U T C U R R E N T (m A )5.04.50.5 1.0 1.5 2.5 3.0 3.52.0 4.051015202530354000RECEIVER OUTPUT CURRENT vs. OUTPUT HIGH VOLTAGEM A X 3443E t o c 05OUTPUT HIGH VOLTAGE (V)R E C E I V E R O U T P U T C U R R E N T (m A )5.04.50.5 1.0 1.5 2.5 3.0 3.52.0 4.051015202530354000RECEIVER OUTPUT VOLTAGEvs. TEMPERATURETEMPERATURE (°C)R E C E I V E R O U T P U T V O L T A G E (V )110956580-105203550-250.51.01.52.02.53.03.54.04.55.0-40125DRIVER OUTPUT CURRENTvs. DIFFERENTIAL OUTPUT VOLTAGEDIFFERENTIAL OUTPUT VOLTAGE (V A - V B ) (V)D R I VE R O U T P U T C U R R E N T (m A )0.51.0 1.52.53.0 3.52.010203040506070800DIFFERENTIAL OUTPUT VOLTAGEvs. TEMPERATURETEMPERATURE (°C)D I F FE R E N T I A L O U T P U T V O L T A G E (V )110956580-105203550-250.51.01.52.02.53.03.50-40125Typical Operating Characteristics(V CC = +5V, T A = +25°C, unless otherwise noted.)NO-LOAD SUPPLY CURRENTvs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )1109580655035205-10-251234560-40125NO-LOAD SUPPLY CURRENTvs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )1109580655035205-10-2548121620240-40125SHUTDOWN SUPPLY CURRENTvs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (μA )1109580655035205-10-250.11100.01-40125A, B CURRENTvs. A, B VOLTAGE (TO GROUND)A, B VOLTAGE (V)A ,BC U R R E N T (μA )40306050-50-40-30-10010-2020-800-400-1600-2000-12000400800120016002000-60MAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 TransceiversOD OCFigure 3. Driver Propagation TimesTest Circuits and WaveformsM A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers 8_______________________________________________________________________________________Figure 7. Receiver Propagation DelayFigure 5. Driver Enable and Disable TimesMAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers_______________________________________________________________________________________9Note 4:The input pulse is supplied by a generator with the following characteristics: f = 5MHz, 50% duty cycle; tr ≤6ns; Z 0= 50Ω.Note 5:C L includes probe and stray capacitance.M A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers 10______________________________________________________________________________________MAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers______________________________________________________________________________________11Table 5. MAX3440E/MAX3441E (RS-485/RS-422)Detailed DescriptionThe MAX3440E–MAX3444E fault-protected transceivers for RS-485/RS-422 and J1708 communication contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when they are connected to a terminated transmission line with all drivers disabled (see the True Fail-Safe section). All devices have a hot-swap input structure that prevents disturbances on the differential signal lines when a circuit board is plugged into a hot back-plane (see the Hot-Swap Capability section). The MAX3440E/MAX3442E/MAX3444E feature a reduced slew-rate driver that minimizes EMI and reduces reflec-tions caused by improperly terminated cables, allowing error-free data transmission up to 250kbps (see the Reduced EMI and Reflections section). The MAX3441E/MAX3443E drivers are not slew-rate limited, allowing transmit speeds up to 10Mbps.DriverThe driver accepts a single-ended, logic-level input (DI) and transfers it to a differential, RS-485/RS-422level output (A and B). Deasserting the driver enable places the driver outputs (A and B) into a high-imped-ance state.ReceiverThe receiver accepts a differential, RS-485/RS-422level input (A and B), and transfers it to a single-ended,logic-level output (RO). Deasserting the receiver enable places the receiver inputs (A and B) into a high-imped-ance state (see Tables 1–7).Low-Power Shutdown(MAX3442E/MAX3443E/MAX3444E)The MAX3442E/MAX3443E/MAX3444E offer a low-power shutdown mode. Force DE low and RE high to shut down the MAX3442E/MAX3443E. Force DE and RE high to shut down the MAX3444E. A time delay of 50ns prevents the device from accidentally entering shutdown due to logic skews when switching between transmit and receive modes. Holding DE low and RE high for at least 800ns guarantees that the MAX3442E/MAX3443E enter shutdown. In shutdown, the devices consume a maxi-mum 20µA supply current.±60V Fault ProtectionThe driver outputs/receiver inputs of RS-485 devices in industrial network applications often experience voltage faults resulting from shorts to the power grid that exceed the -7V to +12V range specified in the EIA/TIA-485 standard. In these applications, ordinary RS-485devices (typical absolute maximum -8V to +12.5V)require costly external protection devices. To reduce system complexity and eliminate this need for external protection, the driver outputs/receiver inputs of the MAX3440E–MAX3444E withstand voltage faults up to ±60V with respect to ground without damage.Protection is guaranteed regardless whether the device is active, shut down, or without power.True Fail-SafeThe MAX3440E–MAX3444E use a -50mV to -200mV differential input threshold to ensure true fail-safe receiver inputs. This threshold guarantees the receiver outputs a logic high for shorted, open, or idle data lines. The -50mV to -200mV threshold complies with the ±200mV threshold EIA/TIA-485 standard.M A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers 12______________________________________________________________________________________±15kV ESD ProtectionAs with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against ESD encountered during handling and assembly. The MAX3440E–MAX3444E receiver inputs/driver outputs (A, B) have extra protection against static electricity found in normal operation. Maxim’s engineers have developed state-of-the-art structures to protect these pins against ±15kV ESD without damage. After an ESD event, the MAX3440E–MAX3444E continue working without latchup.ESD protection can be tested in several ways. The receiver inputs are characterized for protection to ±15kV using the Human Body Model.ESD Test ConditionsESD performance depends on a number of conditions.Contact Maxim for a reliability report that documents test setup, methodology, and results.Human Body ModelFigure 9a shows the Human Body Model, and Figure 9b shows the current waveform it generates when dis-charged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of inter-est, which is then discharged into the device through a 1.5k Ωresistor.Driver Output ProtectionTwo mechanisms prevent excessive output current and power dissipation caused by faults or bus contention.The first, a foldback current limit on the driver output stage, provides immediate protection against short cir-cuits over the whole common-mode voltage range. The second, a thermal shutdown circuit, forces the driver out-puts into a high-impedance state if the die temperature exceeds +160°C. Normal operation resumes when the die temperature cools to +140°C, resulting in a pulsed output during continuous short-circuit conditions.MAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers______________________________________________________________________________________13Figure 9a. Human Body ESD Test ModelM A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers 14______________________________________________________________________________________Hot-Swap CapabilityHot-Swap InputsInserting circuit boards into a hot, or powered, back-plane may cause voltage transients on DE, DE/RE, RE ,and receiver inputs A and B that can lead to data errors.For example, upon initial circuit board insertion, the processor undergoes a power-up sequence. During this period, the high-impedance state of the output drivers makes them unable to drive the MAX3440E–MAX3444E enable inputs to a defined logic level. Meanwhile, leak-age currents of up to 10µA from the high-impedance out-put, or capacitively coupled noise from V CC or G ND,could cause an input to drift to an incorrect logic state.To prevent such a condition from occurring, the MAX3440E–MAX3443E feature hot-swap input circuitry on DE, DE/RE, and RE to guard against unwanted dri-ver activation during hot-swap situations. The MAX3444E has hot-swap input circuitry only on RE .When V CC rises, an internal pulldown (or pullup for RE )circuit holds DE low for at least 10µs, and until the cur-rent into DE exceeds 200µA. After the initial power-up sequence, the pulldown circuit becomes transparent,resetting the hot-swap tolerable input.Hot-Swap Input CircuitryAt the driver-enable input (DE), there are two NMOS devices, M1 and M2 (Figure 10). When V CC ramps from zero, an internal 15µs timer turns on M2 and sets the SR latch, which also turns on M1. Transistors M2, a 2mA current sink, and M1, a 100µA current sink, pull DE to GND through a 5.6k Ωresistor. M2 pulls DE to the disabled state against an external parasitic capaci-tance up to 100pF that may drive DE high. After 15µs,the timer deactivates M2 while M1 remains on, holding DE low against three-state leakage currents that may drive DE high. M1 remains on until an external current source overcomes the required input current. At this time, the SR latch resets M1 and turns off. When M1turns off, DE reverts to a standard, high-impedance CMOS input. Whenever V CC drops below 1V, the input is reset.A complementary circuit for RE uses two PMOS devices to pull RE to V CC .__________Applications Information128 Transceivers on the BusThe MAX3440E–MAX3444E transceivers 1/4-unit-load receiver input impedance (48k Ω) allows up to 128transceivers connected in parallel on one communica-tion line. Connect any combination of these devices,and/or other RS-485 devices, for a maximum of 32-unit loads to the line.Reduced EMI and ReflectionsThe MAX3440E/MAX3442E/MAX3444E are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. Figure 11shows the driver output waveform and its Fourier analy-sis of a 125kHz signal transmitted by a MAX3443E.High-frequency harmonic components with large ampli-tudes are evident.Figure 12 shows the same signal displayed for a MAX3442E transmitting under the same conditions.Figure 12’s high-frequency harmonic components are much lower in amplitude, compared with Figure 11’s,and the potential for EMI is significantly reduced.Figure 10. Simplified Structure of the Driver Enable Pin (DE)In general, a transmitter’s rise time relates directly to the length of an unterminated stub, which can be dri-ven with only minor waveform reflections. The following equation expresses this relationship conservatively:Length = t RISE / (10 x 1.5ns/ft)where t RISE is the transmitter’s rise time.For example, the MAX3442E’s rise time is typically 800ns, which results in excellent waveforms with a stub length up to 53ft. A system can work well with longer unterminated stubs, even with severe reflections, if the waveform settles out before the UART samples them.RS-485 ApplicationsThe MAX3440E–MAX3443E transceivers provide bidi-rectional data communications on multipoint bus trans-mission lines. Figures 13 and 14show a typical network applications circuit. The RS-485 standard covers line lengths up to 4000ft. To minimize reflections and reduce data errors, terminate the signal line at both ends in its characteristic impedance, and keep stub lengths off the main line as short as possible.J1708 ApplicationsThe MAX3444E is designed for J1708 applications. To configure the MAX3444E, connect DE and RE to G ND.Connect the signal to be transmitted to TXD. Terminate the bus with the load circuit as shown in Figure 15. The drivers used by SAE J1708 are used in a dominant-mode application. DE is active low; a high input on DE places the outputs in high impedance. When the driver is disabled (TXD high or DE high), the bus is pulled high by external bias resistors R1 and R2. Therefore, a logic level high is encoded as recessive. When all transceivers are idle in this configuration, all receivers output logic high because of the pullup resistor on A and pulldown resistor on B. R1 and R2 provide the bias for the recessive state.C1 and C2 combine to form a 6MHz lowpass filter, effec-tive for reducing FM interference. R2, C1, R4, and C2combine to form a 1.6MHz lowpass filter, effective for reducing AM interference. Because the bus is untermi-nated, at high frequencies, R3 and R4 perform a pseudotermination. This makes the implementation more flexible, as no specific termination nodes are required at the ends of the bus.MAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers______________________________________________________________________________________155.00MHz 500kHz/div 020dB/div Figure 11. Driver Output Waveform and FFT Plot of MAX3443E Transmitting a 125kHz Signal 5.00MHz500kHz/div 020dB/divFigure 12. Driver Output Waveform and FFT Plot of MAX3442E Transmitting a 125kHz SignalM A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers 16______________________________________________________________________________________Figure 13. MAX3440E/MAX3441E Typical RS-485 NetworkFigure 14. MAX3442E/MAX3443E Typical RS-485 NetworkMAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 TransceiversFigure 15. J1708 Application CircuitChip InformationTRANSISTOR COUNT: 310PROCESS: BiCMOSPin Configurations and Typical Operating Circuits (continued)M A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers 18______________________________________________________________________________________Ordering Information (continued)MAX3440E–MAX3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers______________________________________________________________________________________19Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)M A X 3440E –M A X 3444E±15kV ESD-Protected, ±60V Fault-Protected,10Mbps, Fail-Safe RS-485/J1708 Transceivers Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. N o circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.20____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2005 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)____________________Revision HistoryPages changed at Rev 1: 1, 6, 11。

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For pricing, delivery, and ordering information,please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at .General DescriptionThe MAX4541–MAX4544 are precision, dual analog switches designed to operate from a single +2.7V to +12V supply. Low power consumption (5µW) makes these parts ideal for battery-powered equipment. These switches offer low leakage currents (100pA max) and fast switching speeds (t ON = 150ns max, t OFF = 100ns max).When powered from a +5V supply, the MAX4541–MAX4544 offer 2Ωmax matching between channels, 60Ωmax on-resistance (R ON ), and 6Ωmax R ON flatness.These switches also offer 5pC max charge injection and a minimum of 2000V ESD protection per Method 3015.7.The MAX4541/MAX4542/MAX4543 are dual single-pole/single-throw (SPST) devices and the MAX4544 is a single-pole/double-throw (SPDT) device. The MAX4541 has two normally open (NO) switches and the MAX4542 has two normally closed (NC) switches. The MAX4543 has one NO and one NC switch and can be used as an SPDT, while the MAX4544 is an SPDT. The MAX4541/MAX4542/MAX4543are available in tiny SOT23-8 and 8-pin TDFN packages,and the MAX4544 is available in a SOT23-6 package.________________________Applications____________________________Features♦60Ωmax (33Ωtyp) Low R ON♦2Ωmax R ON Matching Between Channels ♦6Ωmax R ON Flatness♦5pC max Guaranteed Charge Injection ♦+2.7V to +12V Single-Supply Operation ♦< 5µW Low Power Consumption♦Low Leakage Current Over Temperature: 10nA max at +85°C♦Fast Switching: t ON = 35ns, t OFF = 25ns ♦Guaranteed Break-Before-Make (MAX4543/MAX4544 Only)♦TTL/CMOS-Logic Compatible♦Pin Compatible with MAX323/MAX324/MAX325♦MAX4541/MAX4542/MAX4543 Available in SOT23-8MAX4544 Available in SOT23-6MAX4541–MAX4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches________________________________________________________________Maxim Integrated Products 119-1202; Rev 4; 6/07Ordering Information continued at end of data sheet.*Dice are specified at T A = +25°C.**EP = Exposed pad.Pin Configurations/Functional Diagrams/Truth TablesBattery-Operated Systems Sample-and-Hold Circuits Heads-Up Displays Guidance and Control SystemsAudio and Video SwitchingMilitary RadiosTest EquipmentCommunications Systems +3V/+5V DACs and ADCs PBX, PABX Cell Phones Ultrasound PagersµMAX is a registered trademark of Maxim Integrated Products, Inc.M A X 4541–M A X 4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches 2_______________________________________________________________________________________Voltage Referenced to GNDV+.........................................................................-0.3V to +13V IN_, COM_, NC_, NO_ (Note 1)..................-0.3V to (V+ + 0.3V)Continuous Current (any terminal)....................................±10mA Peak Current, COM_, NO_, NC_(pulsed at 1ms, 10% duty cycle max)............................±20mA ESD per Method 3015.7.................................................> 2000V Continuous Power DissipationSOT23-6 (derate 7.1mW/°C above +70°C)....................571mW SOT23-8 (derate 5.3mW/°C above +70°C)....................421mWTDFN (derate 24.4mW/°C above +70°C).....................1951mW µMAX (derate 4.10mW/°C above +70°C)......................330mW Narrow SO (derate 5.88mW/°C above +70°C)..............471mW Plastic DIP (derate 9.09mW/°C above +70°C)..............727mW Operating Temperature RangesMAX454_C_ _.......................................................0°C to +70°C MAX454_E_ _.....................................................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS—Single +5V Supply(V+ = +5V ±10%, GND = 0, V INH = 2.4V, V INL = 0.8V, T A = T MIN to T MAX , unless otherwise noted.) (Notes 2, 3)Note 1:Signals on NC_, NO_, COM_, or IN_ exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximumcurrent rating.MAX4541–MAX4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)(V+ = +5V ±10%, GND = 0, V INH = 2.4V, V INL = 0.8V, T A = T MIN to T MAX , unless otherwise noted.) (Notes 2, 3)M A X 4541–M A X 4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS—Single +3.3V Supply(V+ = +3.0V to +3.6V, GND = 0, V INH = 2.4V, V INL = 0.8V, T A = T MIN to T MAX , unless otherwise noted.) (Notes 2, 3)Note 2:QFN and SOT-packaged parts are 100% tested at +25°C only and guaranteed by correlation at the full hot rated temperature.Note 3:The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used inthis data sheet.Note 4:Guaranteed by design.Note 5:ΔR ON = ΔR ON max - ΔR ON min.Note 6:Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over thespecified analog signal range.Note 7:Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at +25°C.Note 8:Off-isolation = 20 x log 10[V COM ⁄ (V NC or V NO )], V COM = output, V NC or V NO = input to off switch.Note 9:Between the two switches, MAX4541/MAX4542/MAX4543 only.MAX4541–MAX4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches_______________________________________________________________________________________51020304050607080024681012ON-RESISTANCE vs. COM_ VOLTAGEV COM_ (V)R O N (Ω)102030405060012345ON-RESISTANCE vs.COM VOLTAGE OVER TEMPERATUREV COM (V)R O N (Ω)2040608010012014016018020024681012TURN-ON/OFF TIMES vs.SUPPLY VOLTAGEV SUPPLY (V)t O N /t O F F (n s )102030405060708090100TURN-ON/OFF TIMES vs. TEMPERATURETEMPERATURE (°C)t O N /t O F F (n s )-55-35-15525456585105125-100-90-80-70-60-50-40-30-20-1000.1110100FREQUENCY RESPONSEFREQUENCY (MHz)L O S S (d B )-225-180-135-90-4504590135180225P H A S E (D E G R E E S )0.0010.010.1110100ON/OFF-LEAKAGE CURRENTvs. TEMPERATURETEMPERATURE (°C)O N /O F F -L E A K A G E (n A )-55-30-5204570951201251234567812345CHARGE INJECTION vs. COM_ VOLTAGEV COM_ (V)Q (p C )1002003004005006007008009001000INPUT VOLTAGE vs. SUPPLY CURRENTM A X 4541-08VIN (V)I + (n A )12345I V+100.111001k 10kTOTAL HARMONIC DISTORTIONvs. FREQUENCYFREQUENCY (Hz)T H D (%)__________________________________________Typical Operating Characteristics(T A = +25°C, unless otherwise noted.)M A X 4541–M A X 4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches 6_______________________________________________________________________________________Applications InformationLogic LevelsThe MAX4541–MAX4544 are TTL compatible whenpowered from a single +5V supply. When powered from other supply voltages, TTL compatibility is guar-anteed and the logic inputs can be driven rail-to-rail.For example, with a +12V supply, IN1 and IN2 can be driven low to 0 and high to 12V. With a +3.3V supply,IN1 and IN2 should be driven low to 0 and high to 3.3V.Driving IN1 and IN2 rail-to-rail minimizes power con-sumption.Analog Signal LevelsAnalog signals that range over the entire supply voltage (V+ to GND) can be switched with very little change in on-resistance over the entire voltage range (see the Typical Operating Characteristics ). All the switches are bidirectional, so the NO_, NC_, and COM_ pins can be used as either inputs or outputs.Pin DescriptionFigure 1. Overvoltage Protection Using Two External Blocking DiodesPower-Supply Sequencing and Overvoltage ProtectionDo not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause perma-nent damage to the devices.Proper power-supply sequencing is recommended for all CMOS devices. Always apply V+ before applying analog signals or logic inputs, especially if the analog or logic signals are not current limited. If this sequenc-ing is not possible, and if the analog or logic inputs are not current limited to <10mA, add a small-signal diode (D1) as shown in Figure 1. If the analog signal can dip below GND, add D2. Adding protection diodes reduces the analog signal range to a diode drop (about 0.7V) below V+ (for D1), and to a diode drop above ground (for D2). Leakage is unaffected by adding the diodes. On-resistance increases by a small amount at low supply voltages. Maximum supply voltage (V+)must not exceed 13V.Adding protection diodes causes the logic thresholds to be shifted relative to the power-supply rails. This can be significant when low supply voltages (+5V or less)are used. With a +5V supply, TTL compatibility is not guaranteed when protection diodes are added. Driving IN1 and IN2 all the way to the supply rails (i.e., to a diode drop higher than the V+ pin, or to a diode drop lower than the GND pin) is always acceptable.Protection diodes D1 and D2 also protect against some overvoltage situations. With Figure 1’s circuit, if the supply voltage is below the absolute maximum rat-ing, and if a fault voltage up to the absolute maximum rating is applied to an analog signal pin, no damage will result.MAX4541–MAX4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches_______________________________________________________________________________________7Figure 2. Switching TimeTest Circuits/Timing DiagramsM A X 4541–M A X 4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches 8_______________________________________________________________________________________Figure 4. Charge InjectionFigure 3a. Break-Before-Make Interval (MAX4543 Only)Figure 3b. Break-Before-Make Interval (MAX4544 Only)_________________________________Test Circuits/Timing Diagrams (continued)MAX4541–MAX4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches_______________________________________________________________________________________9Figure 6. CrosstalkFigure 5. Off-Isolation _________________________________Test Circuits/Timing Diagrams (continued)Figure 7. Channel Off/On-CapacitanceM A X 4541–M A X 4544Low-Voltage, Single-SupplyDual SPST/SPDT Analog Switches 10_________________________________________________________________________________________Ordering Information (continued)*Dice are specified at T A = +25°C.**EP = Exposed pad.MAX4541–MAX4544Dual SPST/SPDT Analog Switches______________________________________________________________________________________11_________Pin Configurations/Functional Diagrams/Truth Tables (continued)M A X 4541–M A X 4544Dual SPST/SPDT Analog Switches 12Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)MAX4541–MAX4544Dual SPST/SPDT Analog Switches______________________________________________________________________________________13Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)M A X 4541–M A X 4544Dual SPST/SPDT Analog Switches 14______________________________________________________________________________________Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)MAX4541–MAX4544______________________________________________________________________________________15S O T 23, 8L .E P SPackage Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to /packages .)Revision HistoryPages changed at Rev 4: 1–16M A X 4541–M A X 4544Dual SPST/SPDT Analog Switches Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.16____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2007 Maxim Integrated Productsis a registered trademark of Maxim Integrated Products, Inc.。