MAX353ESE+中文资料

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MAX3490EESA+中文资料

General DescriptionDevices in the MAX3483E family (MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E) are ±15kV ESD-protected, +3.3V, low-power transceivers for RS-485 and RS-422 communications. Each device con-tains one driver and one receiver. The MAX3483E and MAX3488E feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly termi-nated cables, allowing error-free data transmission at data rates up to 250kbps. The partially slew-rate-limited MAX3486E transmits up to 2.5Mbps. The MAX3485E,MAX3490E, and MAX3491E transmit at up to 12Mbps.All devices feature enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge, and ±15kV using the Human Body Model.Drivers are short-circuit current limited and are protect-ed 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.The MAX3488E, MAX3490E, and MAX3491E feature full-duplex communication, while the MAX3483E,MAX3485E, and MAX3486E are designed for half-duplex communication.ApplicationsTelecommunicationsIndustrial-Control Local Area Networks Transceivers for EMI-Sensitive Applications Integrated Services Digital Networks Packet SwitchingFeatureso ESD Protection for RS-485 I/O Pins±15kV—Human Body Model±8kV—IEC 1000-4-2, Contact Discharge ±15kV—IEC 1000-4-2, Air-Gap Discharge o Operate from a Single +3.3V Supply—No Charge Pump Required o Interoperable with +5V Logic o Guaranteed 12Mbps Data Rate (MAX3485E/MAX3490E/MAX3491E)o Slew-Rate Limited for Errorless Data Transmission (MAX3483E/MAX3488E) o 2nA Low-Current Shutdown Mode(MAX3483E/MAX3485E/MAX3486E/MAX3491E)o -7V to +12V Common-Mode Input Voltage Range o Full-Duplex and Half-Duplex Versions Available o Industry-Standard 75176 Pinout (MAX3483E/MAX3485E/MAX3486E)o Current-Limiting and Thermal Shutdown for Driver Overload ProtectionMAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers________________________________________________________________Maxim Integrated Products119-1474; Rev 0; 4/99Selector GuideOrdering InformationOrdering Information continued at end of data sheet.For free samples & the latest literature: , or phone 1-800-998-8800.For small orders, phone 1-800-835-8769.M A X 3483E /M A X 3485E /M A X 3486E /M A X 3488E /M A X 3490E /M A X 3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceiversABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICS(V = +3.3V ±0.3V, T = T to T , unless otherwise noted. Typical values are at T = +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.Supply Voltage (V CC ).............................................................+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 (V CC + 0.3V)Continuous Power Dissipation (T A = +70°C)8-Pin SO (derate 5.88mW/°C above +70°C)..................471mW 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C).....727mW14-Pin SO (derate 8.33mW/°C above +70°C)................667mW 14-Pin Plastic DIP (derate 10mW/°C above +70°C)......800mW Operating Temperature RangesMAX34_ _ EC_ _...................................................0°C to +70°C MAX34_ _ EE_ _.................................................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10sec).............................+300°CMAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceiversDC ELECTRICAL CHARACTERISTICS (continued)(V CC = +3.3V ±0.3V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)DRIVER SWITCHING CHARACTERISTICS—MAX3485E/MAX3490E/MAX3491E(V = +3.3V, T = +25°C.)DRIVER SWITCHING CHARACTERISTICS—MAX3486E(V = +3.3V, T = +25°C.)*MAX3488E and MAX3491E will be compliant to ±8kV per IEC 1000-4-2 Contact Discharge by September 1999.M A X 3483E /M A X 3485E /M A X 3486E /M A X 3488E /M A X 3490E /M A X 3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers4_______________________________________________________________________________________DRIVER SWITCHING CHARACTERISTICS—MAX3483E/MAX3488E(V CC = +3.3V, T A = +25°C.)RECEIVER SWITCHING CHARACTERISTICS(V CC = +3.3V, T A = +25°C.)Note 1:∆V OD and ∆V OC are the changes in V OD and V OC , respectively, when the DI input changes state.Note 2:Measured on |t PLH (Y) - t PHL (Y)|and |t PLH (Z) - t PHL (Z)|.Note 3:The transceivers are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 80ns, thedevices are guaranteed not to enter shutdown. If the inputs are in this state for at least 300ns, the devices are guaranteed to have entered shutdown. See Low-Power Shutdown Mode section.MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers_______________________________________________________________________________________5Typical Operating Characteristics(V CC = +3.3V, T A = +25°C, unless otherwise noted.)252015105000.51.01.52.02.53.53.0OUTPUT CURRENT vs.RECEIVER OUTPUT LOW VOLTAGEM A X 3483E -01OUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )-20-18-16-14-12-10-8-6-4-2000.51.01.52.02.53.53.0OUTPUT CURRENT vs.RECEIVER OUTPUT HIGH VOLTAGEM A X 3483E -02OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )3.003.053.103.153.203.253.30-40-20020406010080RECEIVER OUTPUT HIGH VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T H I G H V O L T A G E (V )00.10.20.30.40.50.60.70.8-40-2020406010080RECEIVER OUTPUT LOW VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T L O W V O L T A G E (V )2505075100125150175024681012OUTPUT CURRENT vs.DRIVER OUTPUT LOW VOLTAGEM A X 3483E -07OUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )100908070605040302010000.5 1.0 1.5 2.0 2.5 3.53.0DRIVER OUTPUT CURRENT vs.DIFFERENTIAL OUTPUT VOLTAGEM A X 3483E -05DIFFERENTIAL OUTPUT VOLTAGE (V)O U T P U T C U R R E N T (m A )1.61.71.81.92.02.12.22.32.42.62.5-40-20020406010080DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. 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 )-100-80-60-40-20543210-7-6-3-4-5-2-1OUTPUT CURRENT vs.DRIVER OUTPUT HIGH VOLTAGEM A X 3483E -08OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )M A X 3483E /M A X 3485E /M A X 3486E /M A X 3488E /M A X 3490E /M A X 3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers0.80.70.91.01.11.2-40-2020406010080SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )Typical Operating Characteristics (continued)(V CC = +3.3V, T A = +25°C, unless otherwise noted.)0102030405060708010090-40-2020406010080SHUTDOWN CURRENT vs. TEMPERATUREM A X 3483E -10TEMPERATURE (°C)S H U T D O W N C U R R E N T (n A )Pin DescriptionMAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers_______________________________________________________________________________________7Figure 2. MAX3488E/MAX3490E Pin Configuration and Typical Operating CircuitFigure 3. MAX3491E Pin Configuration and Typical Operating CircuitFigure 1. MAX3483E/MAX3485E/MAX3486E Pin Configuration and Typical Operating CircuitM A X 3483E /M A X 3485E /M A X 3486E /M A X 3488E /M A X 3490E /M A X 3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers8_______________________________________________________________________________________Figure 4. Driver V OD and V OC Figure 7. Driver Differential Output Delay and Transition TimesFigure 6. Receiver V OH and V OLFigure 5. Driver V OD with Varying Common-Mode VoltageMAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers_______________________________________________________________________________________9Figure 8. Driver Propagation TimesFigure 9. Driver Enable and Disable Times (t PZH , t PSH , t PHZ )Figure 10. Driver Enable and Disable Times (t PZL , t PSL , t PLZ )M A X 3483E /M A X 3485E /M A X 3486E /M A X 3488E /M A X 3490E /M A X 3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers10______________________________________________________________________________________Figure 11. Receiver Propagation DelayFigure 12. Receiver Enable and Disable TimesNote 4: The input pulse is supplied by a generator with the following characteristics: f = 250kHz, 50% duty cycle, t r ≤6.0ns, Z O = 50Ω.Note 5: C L includes probe and stray capacitance._____________________Function TablesDevices with Receiver/Driver Enable(MAX3483E/MAX3485E/MAX3486E/MAX3491E)Table 1. Transmitting* B and A outputs are Z and Y, respectively, for full-duplex part (MAX3491E).X = Don’t care; High-Z = High impedanceTable 2. Receiving* DE is a “don’t care” (x) for the full-duplex part (MAX3491E).X = Don’t care; High-Z = High impedanceDevices without Receiver/Driver Enable(MAX3488E/MAX3490E)Table 3. TransmittingTable 4. Receiving___________Applications InformationThe MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E are low-power transceivers for RS-485 and RS-422 communications. The MAX3483E and MAX3488E can transmit and receive at data rates up to 250kbps, the MAX3486E at up to 2.5Mbps, and the MAX3485E/MAX3490E/MAX3491E at up to 12Mbps. The MAX3488E/MAX3490E/MAX3491E are full-duplex trans-ceivers, while the MAX3483E/MAX3485E/MAX3486E are half-duplex. Driver Enable (DE) and Receiver Enable (RE ) pins are included on the MAX3483E/MAX3485E/MAX3486E/MAX3491E. When disabled, the driver and receiver outputs are high impedance.Reduced EMI and Reflections (MAX3483E/MAX3486E/MAX3488E)The MAX3483E/MAX3488E are slew-rate limited, mini-mizing EMI and reducing reflections caused by improp-erly terminated cables. Figure 13 shows the driver output waveform of a MAX3485E/MAX3490E/MAX3491E transmitting a 125kHz signal, as well as the Fourier analysis of that waveform. High-frequency harmonics with large amplitudes are evident. Figure 14 shows the same information, but for the slew-rate-limited MAX3483E/MAX3488E transmitting the same signal. The high-frequency harmonics have much lower amplitudes,and the potential for EMI is significantly reduced.Low-Power Shutdown Mode(MAX3483E/MAX3485E/MAX3486E/MAX3491E)A low-power shutdown mode is initiated by bringing both RE high and DE low. The devices will not shut down unless both the driver and receiver are disabled (high impedance). In shutdown, the devices typically draw only 2nA of supply current.For these devices, the t PSH and t PSL enable times assume the part was in the low-power shutdown mode;the t PZH and t PZL enable times assume the receiver or driver was disabled, but the part was not shut down.MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers______________________________________________________________________________________11INPUTS OUTPUT A, B RO ≥+0.2V 1≤-0.2V 0Inputs Open1INPUT OUTPUTS DI Z Y 101015MHz 500kHz/div 05MHz500kHz/div Figure 13. Driver Output Waveform and FFT Plot of MAX3485E/MAX3490E/MAX3491E Transmitting a 125kHz Signal Figure 14. Driver Output Waveform and FFT Plot of MAX3483E/ MAX3488E Transmitting a 125kHz SignalM A X 3483E /M A X 3485E /M A X 3486E /M A X 3488E /M A X 3490E /M A X 3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers12______________________________________________________________________________________Figure 17. MAX3483E/MAX3488E Driver Propagation Delay Figure 19. MAX3483E/MAX3488E System Differential Voltage at 125kHz Driving 4000 Feet of Cable Figure 20. MAX3485E/MAX3490E/MAX3491E System Differential Voltage at 125kHz Driving 4000 Feet of CableDriver-Output Protection Excessive output current and power dissipation caused by faults or by bus contention are prevented by two mechanisms. A foldback current limit on the output stage provides immediate protection against short circuits over the whole common-mode voltage range (see Typical Operating Characteristics). In addition, a thermal shut-down circuit forces the driver outputs into a high-imped-ance state if the die temperature rises excessively.Propagation Delay Figures 15–18 show the typical propagation delays. Skew time is simply the difference between the low-to-high and high-to-low propagation delay. Small driver/receiver skew times help maintain a symmetrical mark-space ratio (50% duty cycle).The receiver skew time, |t PRLH- t PRHL|, is under 10ns (20ns for the MAX3483E/MAX3488E). The driver skew times are 8ns for the MAX3485E/MAX3490E/MAX3491E, 12ns for the MAX3486E, and typically under 50ns for the MAX3483E/MAX3488E.Line Length vs. Data Rate The RS-485/RS-422 standard covers line lengths up to 4000 feet. For line lengths greater than 4000 feet, see Figure 21 for an example of a line repeater.Figures 19 and 20 show the system differential voltage for parts driving 4000 feet of 26AWG twisted-pair wire at 125kHz into 120Ωloads.For faster data rate transmission, please consult the fac-tory.±15kV ESD Protection As with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electrostatic discharges encountered during handling and assembly. The driver outputs and receiver inputs of the MAX3483E family of devices have extra protection against static electricity. Maxim’s engineers have developed state-of-the-art structures to protect these pins against ESD of ±15kV without damage. The ESD structures withstand high ESD in all states: normal operation, shutdown, and powered down. After an ESD event, Maxim’s E versions keep working without latchup or damage.ESD protection can be tested in various ways; the transmitter outputs and receiver inputs of this product family are characterized for protection to the following limits:1)±15kV using the Human Body Model2)±8kV using the Contact-Discharge method specifiedin IEC 1000-4-23)±15kV using IEC 1000-4-2’s Air-Gap method.ESD Test Conditions ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results.Human Body Model Figure 22a shows the Human Body Model and Figure 22b 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 test device through a 1.5kΩresistor.IEC 1000-4-2 The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifi-cally refer to integrated circuits. The MAX3483E family of devices helps you design equipment that meets Level 4 (the highest level) of IEC 1000-4-2, without the need for additional ESD-protection components.The major difference between tests done using the Human Body Model and IEC 1000-4-2 is higher peak current in IEC 1000-4-2, because series resistance is lower in the IEC 1000-4-2 model. Hence, the ESD with-stand voltage measured to IEC 1000-4-2 is generally lower than that measured using the Human Body Model. Figure 23a shows the IEC 1000-4-2 model, and Figure 23b shows the current waveform for the ±8kV IEC 1000-4-2, Level 4 ESD contact-discharge test.Figure 21. Line Repeater for MAX3488E/MAX3490E/MAX3491EMAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers ______________________________________________________________________________________13M A X 3483E /M A X 3485E /M A X 3486E /M A X 3488E /M A X 3490E /M A X 3491EThe air-gap test involves approaching the device with a charged probe. The contact-discharge method connects the probe to the device before the probe is energized.Machine ModelThe Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis-tance. Its objective is to emulate the stress caused when I/O pins are contacted by handling equipment during test and assembly. Of course, all pins require this protection, not just RS-485 inputs and outputs.Typical ApplicationsThe MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E transceivers are designed for bidirectional data communications on multipoint bus transmission lines. Figures 24 and 25 show typical net-work applications circuits. These parts can also be used as line repeaters, with cable lengths longer than 4000 feet, as shown in Figure 21.To minimize reflections, the line should be terminated at both ends in its characteristic impedance, and stub lengths off the main line should be kept as short as possible. The slew-rate-limited MAX3483E/MAX3488E and the partially slew-rate-limited MAX3486E are more tolerant of imperfect termination.3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers14______________________________________________________________________________________Figure 22a. Human Body ESD Test ModelFigure 22b. Human Body Current WaveformFigure 23a. IEC 1000-4-2 ESD Test ModelFigure 23b. IEC 1000-4-2 ESD Generator Current WaveformMAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceivers______________________________________________________________________________________15Figure 25. MAX3488E/MAX3490E/MAX3491E Full-Duplex RS-485 NetworkFigure 24. MAX3483E/MAX3485E/MAX3486E Typical RS-485 NetworkM A X 3483E /M A X 3485E /M A X 3486E /M A X 3488E /M A X 3490E /M A X 3491E3.3V-Powered, ±15kV ESD-Protected, 12Mbps and Slew-Rate-Limited T rue RS-485/RS-422 T ransceiversTRANSISTOR COUNT: 761Chip InformationOrdering Information (continued)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©1999 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.。

MAX353CPE+中文资料

Signal Range ∆3Ω Max o Guaranteed Charge Injection < 10pC o Guaranteed Off-Channel Leakage < 6nA at +85°C o ESD Guaranteed > 2000V per Method 3015.7 o Single-Supply Operation (+10V to +30V)
MAX351CPE
0°C to +70°C 16 Plastic DIP
MAX351CSE
0°C to +70°C 16 Narrow SO
MAX351C/D
0°C to +70°C Dice*
MAX351EGE -40°C to +85°C 16 QFN
MAX351EPE -40°C to +85°C 16 Plastic DIP
Operating Temperature Ranges: MAX35_C_ _ .......................................................0°C to +70°C MAX35_E_ _.....................................................-40°C to +85°C MAX35_MJE ..................................................-55°C to +125°C
________________________Applications
Sample-and-Hold Circuits Military Radios

MAX753ESE+;MAX754ESE+;MAX753ESE+T;MAX754ESE+T;中文规格书,Datasheet资料

_______________General DescriptionThe MAX753/MAX754 drive cold-cathode fluorescent lamps (CCFLs) and provide the LCD backplane bias (contrast) power for color or monochrome LCD panels.These ICs are designed specifically for backlit note-book-computer applications.Both the backplane bias and the CCFL supply can be shut down independently. When both sections are shut down, supply current drops to 25µA. The LCD contrast and CCFL brightness can be adjusted by clocking sep-arate digital inputs or using external potentiometers.LCD contrast and backlight brightness settings are pre-served in their respective counters while in shutdown.On power-up, the LCD contrast counter and CCFL brightness counter are set to one-half scale.The ICs are powered from a regulated 5V supply. The magnetics are connected directly to the battery, for maximum power efficiency.The CCFL driver uses a Royer-type resonant architec-ture. It can provide from 100mW to 6W of power to one or two tubes. The MAX753 provides a negative LCD bias voltage; the MAX754 provides a positive LCD bias voltage.________________________ApplicationsNotebook Computers Palmtop Computers Pen-Based Data Systems Personal Digital Assistants Portable Data-Collection Terminals____________________________Features♦Drives Backplane and Backlight ♦4V to 30V Battery Voltage Range ♦Low 500µA Supply Current♦Digital or Potentiometer Control of CCFL Brightness and LCD Bias Voltage ♦Negative LCD Contrast (MAX753)♦Positive LCD Contrast (MAX754)♦Independent Shutdown of Backlight and Backplane Sections ♦25µA Shutdown Supply Current______________Ordering Information* Contact factory for dice specifications.MAX753/MAX754CCFL Backlight and LCD Contrast Controllers________________________________________________________________Maxim Integrated Products1__________________Pin Configuration19-0197; Rev 1; 1/95For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at .M A X 753/M A X 754CCFL Backlight andLCD Contrast Controllers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V DD = 5V, BATT = 15V, CON = LON = 5V, LX = G ND = PG ND = 0V, I REF = 0mA, all digital input levels are 0V or 5V, T A = T MIN to T MAX , unless otherwise noted.)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 DD to GND.................................................................-0.3V, +7V PGND to GND.....................................................................±0.3V BATT to GND.............................................................-0.3V, +36V LX to GND............................................................................±50V CS to GND.....................................................-0.6V, (V DD + 0.3V)Inputs/Outputs to GND (LADJ, CADJ, LON,CON, REF, CFB, CC, CDRV, LDRV, LFB).....-0.3V, (V DD + 0.3V)Continuous Power Dissipation (T A = +70°C)Plastic DIP (derate 10.53mW/°C above +70°C)...........842mW Narrow SO (derate 8.70mW/°C above +70°C).............696mWOperating Temperature RangesMAX75_C_ _........................................................0°C to +70°C MAX75_E_ _......................................................-40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +160°C Lead Temperature (soldering, 10sec).............................+300°CMAX753/MAX754CCFL Backlight and LCD Contrast Controllers_______________________________________________________________________________________3Note 1:Maximum shutdown current occurs at BATT = LX = 0V.Note 2:Timing specifications are guaranteed by design and not production tested.ELECTRICAL CHARACTERISTICS (continued)(V DD = 5V, BATT = 15V, CON = LON = 5V, LX = G ND = PG ND = 0V, I REF = 0mA, all digital input levels are 0V or 5V, T A = T MIN to T MAX , unless otherwise noted.)M A X 753/M A X 754CCFL Backlight andLCD Contrast Controllers 4_____________________________________________________________________________________________________________________________________________________Pin Description_______________Theory of OperationCCFL InverterThe MAX753/MAX754’s CCFL inverter is designed to drive one or two cold-cathode fluorescent lamps (CCFLs) with power levels from 100mW to 6W. These lamps commonly provide backlighting for LCD panels in portable computers.Drive Requirements for CCFL TubesCCFL backlights require a high-voltage, adjustable AC power source. The MAX753/MAX754 generate this AC waveform with a self-oscillating, current-fed, parallel resonant circuit, also known as a Royer-type oscillator. Figure 1 shows one such circuit. The Royer oscillator is comprised of T1, C9, the load at the secondary, Q4,and Q5. The circuit self-oscillates at a frequency deter-mined by the effective primary inductance and capaci-tance. Q4 and Q5 are self-driven by the extra winding.The current source feeding the Royer oscillator is com-prised of L1, D5, and the MAX758A. When current from the current source increases, so does the lamp current.The lamp current is half-wave rectified by D7A andD7B, and forms a voltage across resistor R8. The MAX753’s error amplifier compares the average of this voltage to the output of its internal DAC. Adjusting the DAC output from zero scale to full scale (digital control)causes the error amplifier to vary the tube current from a minimum to a maximum. The DAC’s transfer function is shown in Figure 2.On power-up or after a reset, the counter sets the DAC output to mid scale. Each rising edge of CADJ (with CON high) decrements the DAC output. When decre-mented beyond full scale, the counter rolls over and sets the DAC to the maximum value. In this way, a sin-gle pulse applied to CADJ decreases the DAC set-point by one step, and 31 pulses increase the set-point by one step.The error amplifier’s output voltage controls the peak current output of the MAX758A. The peak switch cur-rent is therefore controlled by the output of the error amplifier. The lower the error amplifier’s output, the lower the peak current. Since the current through the current source is related to the current through the tube, the lower the error amplifier’s output, the lower the tube current.MAX753/MAX754CCFL Backlight and LCD Contrast Controllers_______________________________________________________________________________________5Figure 1. CCFL and Positive LCD Power SupplyM A X 753/M A X 754CCFL Backlight andLCD Contrast Controllers 6_______________________________________________________________________________________In Figure 1, the MAX758A, L1, and D5 form a voltage-controlled switch-mode current source. The current out of L1 is proportional to the voltage applied to the SS pin. The MAX758A contains a current-mode pulse-width-modulating buck regulator that switches at 170kHz. The voltage on the SS pin sets the switch cur-rent limit and thus sets the current out of L1.CCFL Current-Regulation LoopFigure 3 shows a block diagram of the regulation loop,which maintains a fixed CCFL average lamp current despite changes in input voltage and lamp impedance.This loop regulates the average value of the half-wave rectified lamp current. The root mean square lamp cur-rent is related to, but not equal to, the average lamp current. Assuming a sinusoidal lamp current, select R8where V REF = 1.25V and I LAMP,RMS is the desired full-scale root mean square lamp current.Figure 2. CCFT DAC Transfer FunctionFigure 3. CCFL Tube Current-Regulation LoopThe minimum operating input voltage is determined by the transformer turns ratio (n), the lamp operating volt-age (V LAMP ), and the ballast capactor (C10). Using a simple model of the CCFL (see Figure 4) we can calcu-late what the T1 center-tap voltage will be at maximum lamp current. The voltage on the CCFL is in phase with the current through it. Let us define I LAMP (t) =LAMP,RMS cos(ωt) and V LAMP (t) = √LAMP,RMS cos(ωt); then the peak voltage at the center tap will bewhere,n is the secondary-to-primary turns ratio of T1, and ω is the frequency of Royer oscillation in radians per sec-ond. The voltage on the center tap of T1 is a full-wave rectified sine wave (see Figure 5). The average voltage at V TAP must equal the average voltage at the LX node of the MAX758A, since there cannot be any DC voltage on inductor L1; thus the minimum operating voltage must be greater than the average voltage at V TAP .LCD Bias GeneratorsThe MAX753/MAX754’s LCD bias generators provide adjustable output voltages for powering LCD displays.The MAX753’s LCD converter generates a negative output, while the MAX754’s generates a positive output.The MAX753/MAX754 employ a constant-peak-currentpulse-frequency-modulation (PFM) switching regulator.The MAX753 adds a simple diode-capacitor voltage inverter to the switching regulator.Constant-Current PFM Control SchemeThe LCD bias generators in these devices use a con-stant-peak-current PFM control scheme. Figure 6, which shows the MAX754’s boost switching regulator, illus-trates this control method. When Q3 closes (Q3 “on”) a voltage equal to BATT is applied to the inductor, caus-ing current to flow from the battery, through the inductor and switch, and to ground. This current ramps up linear-ly, storing energy in the inductor’s magnetic field. When Q3 opens, the inductor voltage reverses, and current flows from the battery, through the inductor and diode,and into the output capacitor. The devices regulate the output voltage by varying how frequently the switch is opened and closed.The MAX753/MAX754 not only regulate the output volt-age, but also maintain a constant peak inductor cur-rent, regardless of the battery voltage. The ICs vary the switch on-time to produce the constant peak current,and vary its off-time to ensure that the inductor current reaches zero at the end of each cycle.The internal circuitry senses both the output voltage and the voltage at the LX node, and turns on the MOS-FET only if: 1) The output voltage is out of regulation,and 2) the voltage at LX is less than the battery voltage.The first condition keeps the output in regulation, and the second ensures that the inductor current always resets to zero (i.e., the part always operates in discon-tinuous-conduction mode).MAX753/MAX754CCFL Backlight and LCD Contrast Controllers_______________________________________________________________________________________7Figure 4. Simple Model of the CCFL Figure 5. Voltage at the Center Tap of T1M A X 753/M A X 754CCFL Backlight andLCD Contrast Controllers 8_______________________________________________________________________________________Figure 6. MAX754 Positive LCD-Bias GeneratorTable 1. CCFL Circuit Component DescriptionsITEMDESCRIPTIONC5Integrating Capacitor. 1 / (C5 x R18) sets the dominant pole for the feedback loop, which regulates the lamp current. Set the dominant pole at least two decades below the Royer frequency to eliminate the AC compo-nent of the voltage on R8. For example, if your Royer is oscillating at 50kHz = 314159rad/s, you should set 1 / (C5 x R18) ≤3142rad/s.R18Integrating Resistor. The output source-current capability of the CC pin (50µA) limits how small R18 can be.Do not make R18 smaller than 70k Ω, otherwise CC will not be able to servo CFB to the DAC voltage (i.e., the integrator will not be able to integrate) and the loop will not be able to regulate.R8R8 converts the half-wave rectified lamp current into a voltage. The average voltage on R8 is not equal to the root mean square voltage on R8. The accuracy of R8 is important since it, along with the MAX754 reference,sets the full-scale lamp current. Use a ±1%-accurate resistor.D7A, D7BD7A and D7B half-wave rectify the CCFL lamp current. Half-wave rectification of the lamp current and then averaging is a simple way to perform AC-to-DC conversion. D7A and D7B’s forward voltage drop and speed are unimportant; they do not need to pass currents larger than about 10mA, and their reverse breakdown voltage can be as low as 10V.CCFLThe circuit of Figure 1, with the components shown in the bill of materials (Table 4), will drive a 500V RMS oper-ating cold-cathode fluorescent lamp at 6W of power with a +12V input voltage. The lower the input voltage,the less power the circuit can deliver.MAX753/MAX754CCFL Backlight and LCD Contrast Controllers_______________________________________________________________________________________9Table 1. CCFL Circuit Component Descriptions (continued)M A X 753/M A X 754CCFL Backlight andLCD Contrast Controllers 10______________________________________________________________________________________Table 2. CCFL Circuit Design Example (Note 1)Note 1:To perform your own calculations for the parameters given in Table 2 (Design Example), use the equations given in Table 3 (Design Equations). Note 2:T1 = Sumida’s EPS207Note 3:C9 = Wima’s SMD 7.3 __/63分销商库存信息:MAXIMMAX753ESE+MAX754ESE+MAX753ESE+T MAX754ESE+T。

公司(普飞诺)新推IC及替换型号

SOP16封装，EC：0至70摄氏度/将TTL信号转为232信号，功耗更低可以3.3V供电特点：232通信距离为25M左右，485通信距离为1200M左右。外围电路简单。四：应用范围
一：线性稳压IC可以应用于：电池供电玩具，工业控制器，仪器仪表，医疗设备，电脑，电话，路由器，门禁，安防，家用电器控制板等。
PFN3232CSE PFN3232ESE PFN202CSE
SOP16封装，CSA：0至70摄氏度/TTL信号转为232信号，比232 功耗更低 SOP16封装，ESA：-40至+85摄氏度/TTL信号转为232信号，比 232功耗更低
CSA：0至70摄氏度/将TTL信号转为232信号，与232外围电容不同 SOP16封装，ESA：-40至+85摄氏度/将TTL信号转为232信号， PFN202ESE 与232外围电容不同 SOP16封装，EE：-40至+85摄氏度/将TTL信号转为232信号， PFN202EESE 功耗更低可以3.3V供电 PFN202ECSE
规格 SOP8封装，CSA：0至70摄氏度/将TTL信号转为485信号 SOP8封装，ESA：-40至+85摄氏度/将TTL信号转为485信号 SOP16封装，CSA：0至70摄氏度/将TTL信号转为232信号 SOP16封装，ESA：-40至+85摄氏度/将TTL信号转为232信号
5： 6： 7： 8： 9： 10：
二：开关式降压IC 序号型号规格 1： P2575s-3.3 SOT263封装，固定输出+3.3V 2： P2575T-3.3 TO220封装，固定输出+3.3V 3： P2575S-5.0 SOT263封装，固定输出+5V 4： P2575T-5.0 TO220封装，固定输出+5V 5： P2575S-12 SOT263封装，固定输出+12V 6： P2575T-12 TO220封装，固定输出+12V 7： P2575S-ADJ SOT263封装，输出可调 8： P2575T-ADJ TO220封装，输出可调 9： P2576S-3.3 SOT263封装，固定输出+3.3V 10： P2576T-3.3 TO220封装，固定输出+3.3V 11： P2576S-5.0 SOT263封装，固定输出+5V 12： P2576T-5.O TO220封装，固定输出+5V 13： P2576S-12 SOT263封装，固定输出+12V 14： P2576T-12 TO220封装，固定输出+12V 15： P2576S-ADJ SOT263封装，输出可调 16： P2576T-ADJ TO220封装，输出可调 17： P2596S-3.3 SOT263封装，固定输出+3.3V 18： P2596T-3.3 TO220封装，固定输出+3.3V 19： P2596S-5.0 SOT263封装，固定输出+5V 20： P2596T-5.0 TO220封装，固定输出+5V 21： P2596S-12 SOT263封装，固定输出+12V 22： P2596T-12 TO220封装，固定输出+12V 23： P2596T-ADJ TO220封装，输出可调 24： P2596S-ADJ SOT263封装，输出可调特点：开关式降压IC，转换效率高，2575输出1A，2576/2596系列最大可输出3A，如2575/2576尾缀带有 HV输入可高达DC60V。默认输入40V。2596与2576两点不同1：开关频率2596为150K，2576为52K。2：259 最大输入为40V。三：通信IC 序号型号 1： PFN485CSA 2： PFN485ESA 3： PFN232CSE 4： PFN2 LM2575T-3.3 LM2575S-5.0 LM2575T-5.0 LM2575S-12 LM2575T-12 LM2575S-ADJ LM2575T-ADJ LM2576S-3.3 LM2576T-3.3 LM2576S-5.0 LM2576T-5.O LM2576S-12 LM2576T-12 LM2576S-ADJ LM2576T-ADJ LM2596S-3.3 LM2596T-3.3 LM2596S-5.0 LM2596T-5.0 LM2596S-12 LM2596T-12 LM2596T-ADJ LM2596S-ADJ 出3A，如2575/2576尾缀带有为150K，2576为52K。2：2596

MAX3072EASA中文资料

The MAX3070E–MAX3079E transceivers draw 800µA of supply current when unloaded or when fully loaded with the drivers disabled. All devices have a 1/8-unit load receiver input impedance, allowing up to 256 transceivers on the bus.
Continuous Power Dissipation (TA = +70°C) 8-Pin SO (derate 5.88mW/°C above +70°C) .................471mW 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) .....727mW 14-Pin SO (derate 8.33mW/°C above +70°C) ...............667mW 14-Pin Plastic DIP (derate 10.0mW/°C above +70°C) ...800mW
H/F, TXP, RXP)......................................................-0.3V to +6V Driver Input Voltage (DI)...........................................-0.3V to +6V Driver Output Voltage (Z, Y, A, B) .............................-8V to +13V Receiver Input Voltage (A, B)....................................-8V to +13V Receiver Input Voltage

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。

max485esa中文资料

General DescriptionThe MAX481, MAX483, MAX485, MAX487–MAX491, andMAX1487 are low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and onereceiver. The MAX483, MAX487, MAX488, and MAX489feature reduced slew-rate drivers that minimize E MI andreduce reflections caused by improperly terminated cables,thus allowing error-free data transmission up to 250kbps.The driver slew rates of the MAX481, MAX485, MAX490,MAX491, and MAX1487 are not limited, allowing them totransmit up to 2.5Mbps.These transceivers draw between 120µA and 500µA ofsupply current when unloaded or fully loaded with disableddrivers. Additionally, the MAX481, MAX483, and MAX487have a low-current shutdown mode in which they consumeonly 0.1µA. All parts operate from a single 5V supply.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 the input is open circuit.The MAX487 and MAX1487 feature quarter-unit-loadreceiver input impedance, allowing up to 128 MAX487/MAX1487 transceivers on the bus. Full-duplex communi-cations are obtained using the MAX488–MAX491, whilethe MAX481, MAX483, MAX485, MAX487, and MAX1487are designed for half-duplex applications.________________________Applications Low-Power RS-485 Transceivers Low-Power RS-422 Transceivers Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks__Next Generation Device Features o For Fault-Tolerant Applications MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4Unit Load, +3.3V, RS-485 Transceiver MAX3440E–MAX3444E: ±15kV ESD-Protected,±60V Fault-Protected, 10Mbps, Fail-Safe, RS-485/J1708 Transceivers o For Space-Constrained Applications MAX3460–MAX3464: +5V, Fail-Safe, 20Mbps,Profibus RS-485/RS-422 Transceivers MAX3362: +3.3V, High-Speed, RS-485/RS-422Transceiver in a SOT23 Package MAX3280E–MAX3284E: ±15kV ESD-Protected,52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422,True Fail-Safe Receivers MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V,SOT23, RS-485/RS-422 Transmitters o For Multiple Transceiver Applications MAX3030E–MAX3033E: ±15kV ESD-Protected,+3.3V, Quad RS-422 Transmitters o For Fail-Safe Applications MAX3080–MAX3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422Transceiverso For Low-Voltage ApplicationsMAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E: +3.3V Powered, ±15kVESD-Protected, 12Mbps, Slew-Rate-Limited,True RS-485/RS-422 Transceivers For pricing, delivery, and ordering information, please contact Maxim Direct at1-888-629-4642, or visit Maxim Integrated’s website at .______________________________________________________________Selection Table19-0122; Rev 10; 9/14PARTNUMBERHALF/FULL DUPLEX DATA RATE (Mbps) SLEW-RATE LIMITED LOW-POWER SHUTDOWN RECEIVER/DRIVER ENABLE QUIESCENT CURRENT (μA) NUMBER OF RECEIVERS ON BUS PIN COUNT MAX481Half 2.5No Yes Yes 300328MAX483Half 0.25Yes Yes Yes 120328MAX485Half 2.5No No Yes 300328MAX487Half 0.25Yes Yes Yes 1201288MAX488Full 0.25Yes No No 120328MAX489Full 0.25Yes No Yes 1203214MAX490Full 2.5No No No 300328MAX491Full 2.5No No Yes 3003214MAX1487 Half 2.5No No Yes 2301288Ordering Information appears at end of data sheet.找电子元器件上宇航军工MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Low-Power, Slew-Rate-LimitedRS-485/RS-422 TransceiversPackage Information For the latest package outline information and land patterns, go to . Note that a “+”, “#”, or “-”in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.16Low-Power, Slew-Rate-Limited RS-485/RS-422 TransceiversMAX481/MAX483/MAX485/MAX487–MAX491/MAX1487Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-100017©2014 Maxim Integrated Products, Inc.Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.。

MAX3232EEUE中文资料

General DescriptionThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E +3.0V-powered EIA/TIA-232 and V.28/V.24communications interface devices feature low power con-sumption, high data-rate capabilities, and enhanced electrostatic-discharge (ESD) protection. The enhanced ESD structure protects all transmitter outputs and receiver inputs to ±15kV using IEC 1000-4-2 Air-G ap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge (±9kV for MAX3246E), and ±15kV using the Human Body Model. The logic and receiver I/O pins of the MAX3237E are protected to the above standards, while the transmit-ter output pins are protected to ±15kV using the Human Body Model.A proprietary low-dropout transmitter output stage delivers true RS-232 performance from a +3.0V to +5.5V power supply, using an internal dual charge pump. The charge pump requires only four small 0.1µF capacitors for opera-tion from a +3.3V supply. Each device guarantees opera-tion at data rates of 250kbps while maintaining RS-232output levels. The MAX3237E guarantees operation at 250kbps in the normal operating mode and 1Mbps in the MegaBaud™ operating mode, while maintaining RS-232-compliant output levels.The MAX3222E/MAX3232E have two receivers and two transmitters. The MAX3222E features a 1µA shutdown mode that reduces power consumption in battery-pow-ered portable systems. The MAX3222E receivers remain active in shutdown mode, allowing monitoring of external devices while consuming only 1µA of supply current. The MAX3222E and MAX3232E are pin, package, and func-tionally compatible with the industry-standard MAX242and MAX232, respectively.The MAX3241E/MAX3246E are complete serial ports (three drivers/five receivers) designed for notebook and subnotebook computers. The MAX3237E (five drivers/three receivers) is ideal for peripheral applications that require fast data transfer. These devices feature a shut-down mode in which all receivers remain active, while consuming only 1µA (MAX3241E/MAX3246E) or 10nA (MAX3237E).The MAX3222E, MAX3232E, and MAX3241E are avail-able in space-saving SO, SSOP, TQFN and TSSOP pack-ages. The MAX3237E is offered in an SSOP package.The MAX3246E is offered in the ultra-small 6 x 6 UCSP™package.ApplicationsBattery-Powered Equipment PrintersCell PhonesSmart Phones Cell-Phone Data Cables xDSL ModemsNotebook, Subnotebook,and Palmtop ComputersNext-Generation Device Features♦For Space-Constrained ApplicationsMAX3228E/MAX3229E: ±15kV ESD-Protected, +2.5V to +5.5V, RS-232 Transceivers in UCSP ♦For Low-Voltage or Data Cable ApplicationsMAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, 2Tx/2Rx, RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic PinsMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers________________________________________________________________Maxim Integrated Products 119-1298; Rev 10; 1/06Ordering Information continued at end of data sheet.*Dice are tested at T A = +25°C, DC parameters only.**EP = Exposed paddle.Pin Configurations, Selector Guide, and Typical Operating Circuits appear at end of data sheet.For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .MegaBaud and UCSP are trademarks of Maxim Integrated Products, Inc.†Covered by U.S. Patent numbers 4,636,930; 4,679,134;4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and other patents pending.M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 TransceiversABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +3V to +5.5V, C1–C4 = 0.1µF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Notes 3, 4)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 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 , SHDN , MBAUD to GND ........................-0.3V to +6V R_IN to GND.....................................................................±25V Output Voltages T_OUT to GND...............................................................±13.2V R_OUT, R_OUTB (MAX3241E)................-0.3V to (V CC + 0.3V)Short-Circuit Duration, T_OUT to GND.......................Continuous Continuous Power Dissipation (T A = +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 16-Pin Wide SO (derate 9.52mW/°C above +70°C).....762mW 18-Pin Wide SO (derate 9.52mW/°C above +70°C).....762mW 18-Pin PDIP (derate 11.11mW/°C above +70°C)..........889mW 20-Pin TQFN (derate 21.3mW/°C above +70°C)........1702mW 20-Pin TSSOP (derate 10.9mW/°C above +70°C)........879mW 20-Pin SSOP (derate 8.00mW/°C above +70°C)..........640mW 28-Pin SSOP (derate 9.52mW/°C above +70°C)..........762mW 28-Pin Wide SO (derate 12.50mW/°C above +70°C).............1W 28-Pin TSSOP (derate 12.8mW/°C above +70°C)......1026mW 32-Lead Thin QFN (derate 33.3mW/°C above +70°C)..2666mW 6 x 6 UCSP (derate 12.6mW/°C above +70°C).............1010mW Operating Temperature Ranges MAX32_ _EC_ _...................................................0°C to +70°C MAX32_ _EE_ _.................................................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°C Bump Reflow Temperature (Note 2)Infrared, 15s..................................................................+200°C Vapor Phase, 20s..........................................................+215°C Note 1:V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.Note 2:This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the devicecan be exposed to during board-level solder attach and rework. This limit permits only the use of the solder profiles recom-mended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow.Preheating is required. Hand or wave soldering is not allowed.MAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers_______________________________________________________________________________________3M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers4_______________________________________________________________________________________TIMING CHARACTERISTICS—MAX3237E(V CC = +3V to +5.5V, C1–C4 = 0.1µF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 3)±10%. MAX3237E: C1–C4 = 0.1µF tested at +3.3V ±5%, C1–C4 = 0.22µF tested at +3.3V ±10%; C1 = 0.047µF, C2, C3, C4 =0.33µF tested at +5.0V ±10%. MAX3246E; C1-C4 = 0.22µF tested at +3.3V ±10%; C1 = 0.22µF, C2, C3, C4 = 0.54µF tested at 5.0V ±10%.Note 4:MAX3246E devices are production tested at +25°C. All limits are guaranteed by design over the operating temperature range.Note 5:The MAX3237E logic inputs have an active positive feedback resistor. The input current goes to zero when the inputs are atthe supply rails.Note 6:MAX3241EEUI is specified at T A = +25°C.Note 7:Transmitter skew is measured at the transmitter zero crosspoints.TIMING CHARACTERISTICS—MAX3222E/MAX3232E/MAX3241E/MAX3246EMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers_______________________________________________________________________________________5-6-4-202460MAX3237ETRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE (MBAUD = GND)LOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )10001500500200025003000531-1-3-5-6-2-42046-5-31-135010001500500200025003000LOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )MAX3237ETRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCE-7.5-5.0-2.502.55.07.5MAX3237ETRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE (MBAUD = V CC )LOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )500100015002000__________________________________________Typical Operating Characteristics(V CC = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k Ωand C L , T A = +25°C, unless otherwise noted.)-6-5-4-3-2-10123456010002000300040005000MAX3241ETRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )302010405060020001000300040005000MAX3241EOPERATING SUPPLY CURRENT vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )04286121014010002000300040005000MAX3241ESLEW RATE vs. LOAD CAPACITANCEM A X 3237E t o c 05LOAD CAPACITANCE (pF)S L E W R A T E (V /µs )-6-5-4-3-2-10123456010002000300040005000MAX3222E/MAX3232ETRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U TV O L T A G E (V )624108141216010002000300040005000MAX3222E/MAX3232ESLEW RATE vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S L E W R A T E (V /µs)2520155103530404520001000300040005000MAX3222E/MAX3232E OPERATING SUPPLY CURRENT vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers6_______________________________________________________________________________________Typical Operating Characteristics (continued)(V CC = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k Ωand C L , T A = +25°C, unless otherwise noted.)20604080100MAX3237ETRANSMITTER SKEW vs. LOAD CAPACITANCE(MBAUD = V CC )LOAD CAPACITANCE (pF)100015005002000T R A N S M I T T E R S K E W (n s )-6-2-42046-3-51-1352.03.03.52.54.04.55.0SUPPLY VOLTAGE (V)T R A N S M I T T E R O U T P U T V O L T A G E (V )MAX3237ETRANSMITTER OUTPUT VOLTAGE vs. SUPPLY VOLTAGE (MBAUD = GND)10203040502.0MAX3237E SUPPLY CURRENT vs. SUPPLY VOLTAGE (MBAUD = GND)SUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (m A )3.03.52.54.04.55.0MAX3246ETRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )4000300010002000-5-4-3-2-101234567-65000468101214160MAX3246ESLEW RATE vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S L E WR A T E (V /µs )200030001000400050001020304050600MAX3246EOPERATING SUPPLY CURRENT vs. LOAD CAPACITANCEM A X 3237E t o c 17LOAD CAPACITANCE (pF)S U P P L Y C U R R EN T (m A )1000200030004000500055453525155024681012MAX3237ESLEW RATE vs. LOAD CAPACITANCE(MBAUD = GND)LOAD CAPACITANCE (pF)S L E W R A T E (V /µs )10001500500200025003000010203050406070MAX3237ESLEW RATE vs. LOAD CAPACITANCE(MBAUD = V CC )LOAD CAPACITANCE (pF)S L E W R A T E (V /µs )5001000150020001020304050MAX3237ESUPPLY CURRENT vs. LOAD CAPACITANCE WHEN TRANSMITTING DATA (MBAUD = GND)LOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )10001500500200025003000MAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers_______________________________________________________________________________________7Pin DescriptionM A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers8_______________________________________________________________________________________MAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers_______________________________________________________________________________________9Detailed DescriptionDual Charge-Pump Voltage ConverterThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246Es’ internal power supply consists of a regu-lated dual charge pump that provides output voltages of +5.5V (doubling charge pump) and -5.5V (inverting charge pump) over the +3.0V to +5.5V V CC range. The charge pump operates in discontinuous mode; if the output voltages are less than 5.5V, the charge pump is enabled, and if the output voltages exceed 5.5V, the charge pump is disabled. Each charge pump requires a flying capacitor (C1, C2) and a reservoir capacitor (C3, C4) to generate the V+ and V- supplies (Figure 1).RS-232 TransmittersThe transmitters are inverting level translators that con-vert TTL/CMOS-logic levels to ±5V EIA/TIA-232-compli-ant levels.The MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E transmitters guarantee a 250kbps data rate with worst-case loads of 3k Ωin parallel with 1000pF,providing compatibility with PC-to-PC communication software (such as LapLink™). Transmitters can be par-alleled to drive multiple receivers or mice.The MAX3222E/MAX3237E/MAX3241E/MAX3246E transmitters are disabled and the outputs are forcedinto a high-impedance state when the device is in shut-down mode (SHDN = G ND). The MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E permit the outputs to be driven up to ±12V in shutdown.The MAX3222E/MAX3232E/MAX3241E/MAX3246E transmitter inputs do not have pullup resistors. Connect unused inputs to GND or V CC . The MAX3237E’s trans-mitter inputs have a 400k Ωactive positive-feedback resistor, allowing unused inputs to be left unconnected.MAX3237E MegaBaud OperationFor higher-speed serial communications, the MAX3237E features MegaBaud operation. In MegaBaud operating mode (MBAUD = V CC ), the MAX3237E transmitters guarantee a 1Mbps data rate with worst-case loads of 3k Ωin parallel with 250pF for +3.0V < V CC < +4.5V. For +5V ±10% operation, the MAX3237E transmitters guarantee a 1Mbps data rate into worst-case loads of 3k Ωin parallel with 1000pF.RS-232 ReceiversThe receivers convert RS-232 signals to CMOS-logic output levels. The MAX3222E/MAX3237E/MAX3241E/MAX3246E receivers have inverting three-state outputs.Drive EN high to place the receiver(s) into a high-impedance state. Receivers can be either active or inactive in shutdown (Table 1).Figure 1. Slew-Rate Test CircuitsLapLink is a trademark of Traveling Software.M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers10______________________________________________________________________________________The complementary outputs on the MAX3237E/MAX3241E (R_OUTB) are always active, regardless of the state of EN or SHDN . This allows the device to be used for ring indicator applications without forward biasing other devices connected to the receiver outputs. This is ideal for systems where V CC drops to zero in shutdown to accommodate peripherals such as UARTs (Figure 2).MAX3222E/MAX3237E/MAX3241E/MAX3246E Shutdown ModeSupply current falls to less than 1µA in shutdown mode (SHDN = low). The MAX3237E’s supply current falls to10nA (typ) when all receiver inputs are in the invalid range (-0.3V < R_IN < +0.3). When shut down, the device’s charge pumps are shut off, V+ is pulled down to V CC , V- is pulled to ground, and the transmitter out-puts are disabled (high impedance). The time required to recover from shutdown is typically 100µs, as shown in Figure 3. Connect SHDN to V CC if shutdown mode is not used. SHDN has no effect on R_OUT or R_OUTB (MAX3237E/MAX3241E).±15kV ESD ProtectionAs with all Maxim devices, ESD-protection structures are incorporated to protect against electrostatic dis-charges encountered during handling and assembly.The driver outputs and receiver inputs of the MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E have extra protection against static electricity. Maxim’s engineers have developed state-of-the-art structures to protect these pins against ESD of ±15kV without damage.The ESD structures withstand high ESD in all states:normal operation, shutdown, and powered down. After an ESD event, Maxim’s E versions keep working without latchup, whereas competing RS-232 products can latch and must be powered down to remove latchup.Furthermore, the MAX3237E logic I/O pins also have ±15kV ESD protection. Protecting the logic I/O pins to ±15kV makes the MAX3237E ideal for data cable applications.SHDN T2OUTT1OUT5V/div2V/divV CC = 3.3V C1–C4 = 0.1µFFigure 3. Transmitter Outputs Recovering from Shutdown or Powering UpMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 TransceiversESD protection can be tested in various ways; the transmitter outputs and receiver inputs for the MAX3222E/MAX3232E/MAX3241E/MAX3246E are characterized for protection to the following limits:•±15kV using the Human Body Model•±8kV using the Contact Discharge method specified in IEC 1000-4-2•±9kV (MAX3246E only) using the Contact Discharge method specified in IEC 1000-4-2•±15kV using the Air-G ap Discharge method speci-fied in IEC 1000-4-2Figure 4a. Human Body ESD Test ModelFigure 4b. Human Body Model Current WaveformFigure 5a. IEC 1000-4-2 ESD Test Model Figure 5b. IEC 1000-4-2 ESD Generator Current WaveformM A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceiverscharacterized for protection to ±15kV per the Human Body Model.ESD Test ConditionsESD performance depends on a variety of conditions.Contact Maxim for a reliability report that documents test setup, test methodology, and test results.Human Body ModelFigure 4a shows the Human Body Model, and Figure 4b 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 interest,which is then discharged into the test device through a 1.5k Ωresistor.IEC 1000-4-2The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifi-cally refer to integrated circuits. The MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E help you design equipment that meets level 4 (the highest level)of IEC 1000-4-2, without the need for additional ESD-protection components.The major difference between tests done using the Human Body Model and IEC 1000-4-2 is higher peak current in IEC 1000-4-2, because series resistance is lower in the IEC 1000-4-2 model. Hence, the ESD with-stand voltage measured to IEC 1000-4-2 is generally lower than that measured using the Human Body Model. Figure 5a shows the IEC 1000-4-2 model, and Figure 5b shows the current waveform for the ±8kV IEC 1000-4-2 level 4 ESD Contact Discharge test. The Air-G ap Discharge test involves approaching the device with a charged probe. The Contact Discharge method connects the probe to the device before the probe is energized.Machine ModelThe Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis-tance. Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. All pins require this protection during manufacturing, not just RS-232 inputs and outputs.Therefore, after PC board assembly, the Machine Model is less relevant to I/O ports.Table 2. Required Minimum Capacitor ValuesFigure 6a. MAX3241E Transmitter Output Voltage vs. Load Current Per TransmitterTable 3. Logic-Family Compatibility with Various Supply VoltagesMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 TransceiversApplications InformationCapacitor SelectionThe capacitor type used for C1–C4 is not critical for proper operation; polarized or nonpolarized capacitors can be used. The charge pump requires 0.1µF capaci-tors for 3.3V operation. For other supply voltages, see Table 2 for required capacitor values. Do not use val-ues smaller than those listed in Table 2. Increasing the capacitor values (e.g., by a factor of 2) reduces ripple on the transmitter outputs and slightly reduces power consumption. C2, C3, and C4 can be increased without changing C1’s value. However, do not increase C1without also increasing the values of C2, C3, C4,and C BYPASS to maintain the proper ratios (C1 to the other capacitors).When using the minimum required capacitor values,make sure the capacitor value does not degradeexcessively with temperature. If in doubt, use capaci-tors with a larger nominal value. The capacitor’s equiv-alent series resistance (ESR), which usually rises at low temperatures, influences the amount of ripple on V+and V-.Power-Supply DecouplingIn most circumstances, a 0.1µF V CC bypass capacitor is adequate. In applications sensitive to power-supply noise, use a capacitor of the same value as charge-pump capacitor C1. Connect bypass capacitors as close to the IC as possible.Operation Down to 2.7VTransmitter outputs meet EIA/TIA-562 levels of ±3.7V with supply voltages as low as 2.7V.Figure 6b. Mouse Driver Test CircuitM A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 TransceiversFigure 7. Loopback Test CircuitT1IN T1OUTR1OUT5V/div5V/div5V/divV CC = 3.3V C1–C4 = 0.1µFFigure 8. MAX3241E Loopback Test Result at 120kbps T1INT1OUTR1OUT5V/div5V/div5V/divV CC = 3.3V, C1–C4 = 0.1µFFigure 9. MAX3241E Loopback Test Result at 250kbps+5V 0+5V 0-5V +5VT_INT_OUT5k Ω + 250pFR_OUTV CC = 3.3V C1–C4 = 0.1µFFigure 10. MAX3237E Loopback Test Result at 1000kbps (MBAUD = V CC )Transmitter Outputs Recoveringfrom ShutdownFigure 3 shows two transmitter outputs recovering from shutdown mode. As they become active, the two trans-mitter outputs are shown going to opposite RS-232 levels (one transmitter input is high; the other is low). Each transmitter is loaded with 3k Ωin parallel with 2500pF.The transmitter outputs display no ringing or undesir-able transients as they come out of shutdown. Note thatthe transmitters are enabled only when the magnitude of V- exceeds approximately -3.0V.Mouse DrivabilityThe MAX3241E is designed to power serial mice while operating from low-voltage power supplies. It has been tested with leading mouse brands from manu-facturers such as Microsoft and Logitech. The MAX3241E successfully drove all serial mice tested and met their current and voltage requirements.MAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 TransceiversFigure 6a shows the transmitter output voltages under increasing load current at +3.0V. Figure 6b shows a typical mouse connection using the MAX3241E.High Data RatesThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E maintain the RS-232 ±5V minimum transmit-ter output voltage even at high data rates. Figure 7shows a transmitter loopback test circuit. Figure 8shows a loopback test result at 120kbps, and Figure 9shows the same test at 250kbps. For Figure 8, all trans-mitters were driven simultaneously at 120kbps into RS-232 loads in parallel with 1000pF. For Figure 9, a single transmitter was driven at 250kbps, and all transmitters were loaded with an RS-232 receiver in parallel with 1000pF.The MAX3237E maintains the RS-232 ±5.0V minimum transmitter output voltage at data rates up to 1Mbps.Figure 10 shows a loopback test result at 1Mbps with MBAUD = V CC . For Figure 10, all transmitters were loaded with an RS-232 receiver in parallel with 250pF.Interconnection with 3V and 5V LogicThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E can directly interface with various 5V logic families, including ACT and HCT CMOS. See Table 3for more information on possible combinations of inter-connections.UCSP ReliabilityThe UCSP represents a unique packaging form factor that may not perform equally to a packaged product through traditional mechanical reliability tests. UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and usage environ-ment. The user should closely review these areas when considering use of a UCSP package. Performance through Operating Life Test and Moisture Resistance remains uncompromised as the wafer-fabrication process primarily determines it.Mechanical stress performance is a greater considera-tion for a UCSP package. UCSPs are attached through direct solder contact to the user’s PC board, foregoing the inherent stress relief of a packaged product lead frame. Solder joint contact integrity must be consid-ered. Table 4 shows the testing done to characterize the UCSP reliability performance. In conclusion, the UCSP is capable of performing reliably through envi-ronmental stresses as indicated by the results in the table. Additional usage data and recommendations are detailed in the UCSP application note, which can be found on Maxim’s website at .Table 4. Reliability Test DataM A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers__________________________________________________________Pin ConfigurationsMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 TransceiversPin Configurations (continued)。

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深圳市明烽威电子有限公司HCPL-4506-300E AVAGO HCPL-0600-500E AVAGOHCPL-4506-500E AVAGO HEDS-9701#C54AVAGOHCPL-4534-000E AVAGO TLC04CP TIHCPL-4534-300E AVAGO X9313WSZ-3T1INTERSILHCPL-4534-500E AVAGO TMS320LF2402APGA TIHCPL-4562-000E AVAGO TMS320LF2406APZA TIHCPL-4562-300E AVAGO AD9910BSVZ ADIHCPL-4562-500E AVAGO AD9957BSVZ ADIHCPL-4661-000E AVAGO TLV320AIC33IRGZ TIHCPL-4661-300E AVAGO TLV320AIC33IZQER TIHCPL-4661-500E AVAGO TPS54616PWPR TIHCPL-4731-000E AVAGO OPA551PA TIHCPL-4731-300E AVAGO DS1813R-15+DALLASHCPL-4731-500E AVAGO TPS7333QDR TIHCPL-7510-000E AVAGO OPA277UA TIHCPL-7510-300E AVAGO LM1877MX-9NSHCPL-7510-500E AVAGO ISO7221BDR TIHCPL-7520-000E AVAGO TL16C550CIPTR TIHCPL-7520-300E AVAGO MAX9324EUP+MAXIMHCPL-7520-500E AVAGO MAX1706EEE-T MAXIMHCPL-7560-000E AVAGO TPS75733KTTR TIHCPL-7560-300E AVAGO LM2674MX-ADJ NSHCPL-7560-500E AVAGO ADS8321EB TIHCPL-7611-000E AVAGO ADS8320EB TIHCPL-7611-300E AVAGO W29C040T-90B WINBONDHCPL-7611-500E AVAGO ISO124U TIHCPL-7710-000E AVAGO FM25L04B-GTR RAMTRONHCPL-7710-300E AVAGO TLE2084CN TIHCPL-7710-500E AVAGO TL317CDR TIHCPL-7720-000E AVAGO MAX354CPE+MAXIMHCPL-7720-300E AVAGO MAX354EPE+MAXIMHCPL-7720-500E AVAGO DEI0429-WMB DEIHCPL-7721-000E AVAGO AT91SAM7SE512-AU atmelHCPL-7721-300E AVAGO EL1881CSZ-T7INTERSILHCPL-7721-500E AVAGO SN74ACT2440FNR TIHCPL-7723-000E AVAGO MT4LC8M8C2P-5MICRONHCPL-7723-300E AVAGOHCPL-7800-000E AVAGOHCPL-7800-300E AVAGOHCPL-7800-500E AVAGOHCPL-7800A-000E AVAGOHCPL-7800A-300E AVAGOHCPL-7800A-500E AVAGOHCPL-7840-000E AVAGOHCPL-7840-300E AVAGOHCPL-7840-500E AVAGOHCPL786J-000E AVAGO HCPL-786J-000E AVAGO HCPL786J-300E AVAGO HCPL-786J-300E AVAGO HCPL786J-500E AVAGO HCPL-786J-500E AVAGO HCPL788J-000E AVAGO HCPL-788J-000E AVAGO HCPL788J-300E AVAGO HCPL-788J-300E AVAGO HCPL788J-500E AVAGO HCPL-788J-500EHCPL-817-000EHCPL-817-00AEHCPL-817-00BEHCPL-817-00CEHCPL-817-00DEHCPL-817-00LEHCPL-817-060EHCPL-817-06AEHCPL-817-06BEHCPL-817-06CEHCPL-817-06DEHCPL-817-06LEHCPL-817-300EHCPL-817-30AEHCPL-817-30BEHCPL-817-30CEHCPL-817-30DEHCPL-817-30LEHCPL-817-360EHCPL-817-36AEHCPL-817-36BEHCPL-817-36CEHCPL-817-36DEHCPL-817-36LEHCPL-817-500EHCPL-817-50AEHCPL-817-50BEHCPL-817-50CEHCPL-817-50DEHCPL-817-50LEHCPL-817-560EHCPL-817-56AEHCPL-817-56BEHCPL-817-56CEHCPL-817-56DEHCPL-817-56LEHCPL-9000-000E AVAGO DRV101FKTWT TIHCPL-9000-300E AVAGO DRV101F TIHCPL-9000-500E AVAGO UCC5638FQPR TIHCPL-902J-000E AVAGO TLV320AIC3204IRHBT TIHCPL-902J-300E AVAGO TLV320AIC3204IRHBR TIHCPL-902J-500E AVAGO TLV5625CDR TIHCPL-J312-000E AVAGO TLV5625IDR TIHCPL-J312-300E AVAGO TLV320AIC3104IRHBT TIHCPL-J312-500E AVAGO TLV320AIC3104IRHBR TIHCPL-J456-000E AVAGO AT45DB041D-SU ATMEL HCPL-J456-300E AVAGO MAX6657MSA+T MAXIM HCPL-J456-500E AVAGO HCPL-J454-000E AVAGO HCPL-M453-000E AVAGO HCPL-J454-300E AVAGO HCPL-M453-300E AVAGO HCPL-J454-400E AVAGO HCPL-M453-500E AVAGO HCPL-J454-500E AVAGO HCPL-M454-000E AVAGO HCPL-J454-600E AVAGO HCPL-M454-300E AVAGO TC7660IJA MICROCHIP HCPL-M454-500E AVAGO TC7660MJA MICROCHIP HCPL-M456-000E AVAGO ADT7460ARQZ ADIHCPL-M456-300E AVAGO ADSP-21065LKCA264ADIHCPL-M456-500E AVAGO ADSP-21065LKCAZ264ADI HCPL-M600-000E AVAGO AD7859ASZ ADI HCPL-M600-300E AVAGO MJD45H11G ONHCPL-M600-500E AVAGO TPD3E001DRLR TIHCPL-M601-000E AVAGO XTR116U TIHCPL-M601-300E AVAGO DS1233-5+DALLAS HCPL-M601-500E AVAGO TRU050GALGA32.0000/16.00Vectron HCPL-M611-000E AVAGO TRU050GACCA28.7040/14.35Vectron HCPL-M611-300E AVAGO AD9516-3BCPZ ADI HCPL-M611-500E AVAGO REF3125AIDBZT TIHCPL-M700-000E AVAGO REF3125AIDBZR TIHCPL-M700-300E AVAGO AD8592ARMZ ADI HCPL-M700-500E AVAGO QCPL-034H-500E AVAGOHD6413079F18HIT AD9865BCPZ ADI HDMP1636A AVAGO QCPL-312H-500E AVAGO HDMP-1636A AVAGO M74VHC1G135DFT1G ONHDMP-1637A AVAGO HSMD-A100-J00J1AVAGO HDMP1638AVAGO LT1587CT LTHDMP-1638AVAGO AD827JRZ-16ADI HEDS9710-R50AVAGO HSMP-389F-BLKG AVAGO HEDS-9710-R50AVAGO HSMP-389F-TR1G AVAGO HEL22MICREL HSMP-389F-TR2G AVAGO HEL23MICREL XC3064A-7PC84C XILINX HFBR-1414Z AVAGO XC3064A-7PC84I XILINX HFBR-1414TZ AVAGO Si7703EDN-T1-E3VISHAY HFBR-1521Z AVAGO Si7703EDN-T1-GE3VISHAYT-1521Z AVAGO Si7703EDN-T1-GE3ADIT-1521ETZ AVAGO AD605ARZ ADIHFBR-1521ETZ AVAGO MACH110-15JC AMDT-1522Z AVAGO MACH210-20JC AMDT-1522ETZ AVAGO LTC4213IDDB LINEAR HFBR-1522ETZ AVAGO DS1233-15+DALLAS HFBR1522Z AVAGO LTC3412EFE LINEAR HFBR-1522Z AVAGO MAX513ESD+T MAXIM HFBR1523Z AVAGO MAX3681EAG+MAXIM HFBR-1523Z AVAGO ICS1893CKILF IDT HFBR1528Z AVAGO TMS32C6416DGLZA5E0TI HFBR-1528Z AVAGO TMS32C6416EGLZ5E0TI HFBR-1531Z AVAGO TMS32C6416EGLZ6E3TI HFBR-1531ETZ AVAGO TMS32C6416EGLZ7E3TI HFBR-2531ETZ AVAGO TMS32C6416EGLZA5E0TI 1531ETZ AVAGO TMS32C6416EGLZA6E3TI 2531ETZ AVAGO AD829JRZ ADI HFBR1532Z AVAGO MAX14830ETM+MAXIM HFBR-1532Z AVAGO MX69GL128EAXGW-90G MXIC HFBR-1532ETZ AVAGO AD7811YRUZ ADI HFBR1533Z AVAGO TPS76318DBVR TI HFBR-1533Z AVAGO ADMP421ACEZ ADI HFBR-2412TZHFBR-2412ZHFBR2416TZHFBR-2416TZHFBR-2521Z AVAGO LT1304CS8Linear R-2521Z AVAGO MAX16801BEUA+T maxim R-2521ETZ AVAGO ACPL-M61L-500E AVAGO HFBR-2521ETZ AVAGO DS26503LN+DALLAS HFBR-2522Z AVAGO MAX9205EAI+T MAXIM R-2522Z AVAGO TMP105YZCT TIR-2522ETZ AVAGO TMP105YZCR TI HFBR-2522ETZ AVAGO AD5821BCBZ ADI HFBR-2523Z AVAGO PM5347-RI PMC HFBR-2528Z AVAGO PM73121-RI PMC HFBR-2531Z AVAGO TPA4411RTJT TI HFBR-2532Z AVAGO TPA4411RTJR TI HFBR-2532ETZ AVAGO LTC1438CG-ADJ Linear HFBR-2533Z AVAGO LTC1438IG-ADJ Linear HFBR-4501Z AVAGO DS1318E+DALLAS HFBR-4503Z AVAGO TMS320DM643AGDK5TI HFBR-4506Z AVAGO ACPL-M75L-000E AVAGO HFBR-4511Z AVAGO ACPL-M75L-060E AVAGO HFBR-4513Z AVAGO ACPL-M75L-500E AVAGO HFBR-4516Z AVAGO ACPL-M75L-560E AVAGO HFBR-4525Z AVAGO ACPL-T350-000E AVAGO HFBR-4526Z AVAGO ACPL-T350-060E AVAGO HFBR-4531Z AVAGO ACPL-T350-300E AVAGO HFBR-4532Z AVAGO ACPL-T350-360E AVAGOHFBR-4533Z AVAGO ACPL-T350-500E AVAGO HFBR-4535Z AVAGO ACPL-T350-560E AVAGO HFBR-4593Z AVAGO ADXRS620BBGZ ADI HFBR-4597Z AVAGO LT1521CS8Linear HFBR-EUD100Z AVAGO LT1521CS8-3.3Linear HFBR-EUD500Z AVAGO LT1521IS8Linear HFBR-EUS100Z AVAGO LT1521IS8-3.3Linear HFBR-EUS500Z AVAGO MAX6835VXSD3+T MAXIM HFBR-RUD100Z AVAGO AD9059BRSZ ADI HFBR-RUD500Z AVAGO HFBR-4515Z AVAGO HFBR-RUS100Z AVAGO HFBR-57E0PZ AVAGO HFBR-RUS500Z AVAGO HFCT-53D5EMZ AVAGO HG88510MITEL HFCT-5611AVAGOHI1-508-5HAR LT1242CS8Linear HI1-509-5HAR LT1242IS8Linear HM628512ALFP-5日立LT1140ACSW LinearHM628512BLFP-5日立AFBR-2419TZ AVAGO HS1101HUMIREL AD7156BCPZ ADIHS6118MACONICS ADP151ACBZ-2.8ADI HSDL-3201#021AVAGO DS1805Z-010+MAXIM HSDL-3201#001AVAGO TLP285-4GB TOSHIBA HSDL-3209-021AVAGO AD421BRZ ADI HSDL-7001#100AVAGO OPA2336PA TI HSDL-7002AVAGO ADUC812BSZ ADI HSMP-3814-BLKG AVAGO STPS6045CW ST HSMP-3814-TR1G AVAGO SG-3030JF EPSON HSMP-3814-TR2G AVAGO MPC8313VRAFFB FREESCAL HSMP-3822-BLKG AVAGO MAX1617AMEE+T maxim HSMP-3822-TR1G AVAGO MCP809M3X-4.63NS HSMP-3822-TR2G AVAGO MCP809M3X-4.38NS HSMP-3823-BLKG AVAGO MCP809M3X-4.00NS HSMP-3823-TR1G AVAGO MCP809M3X-3.08NS HSMP-3823-TR2G AVAGO MCP809M3X-2.93NS HSMP-3824-BLKG AVAGO MCP809M3X-2.63NS HSMP-3824-TR1G AVAGO MCP810M3X-4.63NS HSMP-3824-TR2G AVAGO MCP810M3X-4.38NS HSMP-3832-BLKG AVAGO MCP810M3X-4.00NS HSMP-3832-TR1G AVAGO MCP810M3X-3.08NS HSMP-3832-TR2G AVAGO MCP810M3X-2.93NS HSMP-3860-BLKG AVAGO MCP810M3X-2.63NS HSMP-3860-TR1G AVAGO LT1317BCS8Linear HSMP-3860-TR2G AVAGO LT1317BIS8Linear HSMP-3862-BLKG AVAGO LTC1757A-1EMS8Linear HSMP-3862-TR1G AVAGO ACPL-K342-000E AVAGO HSMP-3862-TR2G AVAGO ACPL-K342-500E AVAGO HSMP-3880-BLKG AVAGO AFBR-57M5APZ AVAGO HSMP-3880-TR1G AVAGO CY7C144AV-25AIT CY HSMP-3880-TR2G AVAGO CY7C144AV-25ACT CYHSMP-3892-BLKG AVAGO CY7C144AV-25AXIT CY HSMP-3892-TR1G AVAGO CY7C144AV-25AXCT CY HSMP-3892-TR2G AVAGO ABA-54563-TR1G AVAGO HSMP-389L-BLKG AVAGO ABA-54563-TR2G AVAGO HSMP-389L-TR1G AVAGO ABA-54563-BLKG AVAGO HSMP-389L-TR2G AVAGO LT1138ACG Linear HSMS-2812-BLKG AVAGO LT1138AIG Linear HSMS-2812-TR1G AVAGO ISL8120IRZ INTERSIL HSMS-2812-TR2G AVAGO ISL8120CRZ INTERSIL HSMS-2817-BLKG AVAGO LTC1421IG-2.5Linear HSMS-2817-TR1G AVAGO LTC1421CG-2.5Linear HSMS-2817-TR2G AVAGO MSC1212Y5PAGT TI HSMS-282K-BLKG AVAGO MSC1212Y5PAGR TI HSMS-282K-TR1G AVAGO TPS7330QDR TI HSMS-282K-TR2G AVAGO ADP3110KRZ ADI HSMS-2850-BLKG AVAGO MAX3263CAG MAXIM HSMS-2850-TR1G AVAGO MAX1729EUB MAXIM HSMS-2850-TR2G AVAGO MAX1651CSA MAXIM HSMS-8202-BLKG AVAGO AD876JR ADI HSMS-8202-TR1G AVAGO MAX1701EEE MAXIM HSMS-8202-TR2G AVAGO Si4201-BMR silicon HT2012-PL SMAR DS12C887+DALLAS HY62256ALT1-70HY LM236DR-2.5TIHY628100BLLG-70HY DS1722U DALLAS HY628100BLLG-70I HY LM7372MRX NSHY628400ALLG-55HY MAX490ESA+T MAXIM HY628400ALLG-70HY HSMS-2822-TR1G AVAGO HY62WT08081E-DG70C HY HSMP-389C-TR1G AVAGO HY62WT08081E-DG70I HY HSMP-389C-BLKG AVAGO ICL232IPE HAR HSMP-389C-TR2G AVAGO ICS8432DY-101ICS MC33375D-3.3R2G ONICS85322AM ICS AFBR-1529Z AVAGO ICS9112M-16ICS AFBR-2529Z AVAGO IDT75K62134S200BB IDT AFBR-1629Z AVAGO ILX139K SONY HSMS-2828-TR1G AVAGO IMP560ESA IMP TPS7101QDR TIIMP809JEUR-T IMP AFBR-57R5APZ AVAGO IMP809LEUR-T IMP UC3875DWPTR TIIMP809MEUR-T IMP ASSR-1510-503E AVAGO IMP809REUR-T IMP ASSR-1510-003E AVAGO IMP809SEUR-T IMP CY7B9514V-AC CYIMP809TEUR-T IMP MAX4450EXK+T MAXIM IMP810JEUR-T IMP SN75976A1DLR TIIMP810LEUR-T IMP ADUC831BSZ ADIIMP810MEUR-T IMP LTC1348IG LINEAR IMP810REUR-T IMP MSA-2111-TR1G AVAGO IMP810SEUR-T IMP DS1621S+T DALLAS IMP810TEUR-T IMP MAX485EESA+T MAXIMIMP811JEUS-T IMP MAX9669ETI+T MAXIM IMP811LEUS-T IMP MSA-0711-TR1G AVAGO IMP811MEUS-T IMP ACPL-P480-500E AVAGO IMP811REUS-T IMP HSMS-2800-TR1G AVAGO IMP811SEUS-T IMP LTC1622IS8LINEAR IMP811TEUS-T IMP MAX2102CWI MAXIM ACPL-312T-500E AVAGO X24165S-2.7T1XICOR ACPL-H342-560E AVAGO X84129SI-2.5T1XICOR ACPL-H342-500E AVAGO HCNW4502-500E AVAGO ACPL-H342-060E AVAGO HCNW4502-300E AVAGO ACPL-H342-000E AVAGO AD811ARZ-16ADI ACPL-K63L-500E AVAGO TOCP155TOSHIBA ACPL-K63L-560E AVAGO TOCP200TOSHIBA ACPL-K63L-000E AVAGO HFBR-14E4Z AVAGO AFBR-5803AQZ AVAGO HFBR-24E2Z AVAGO ASSR-4128-502E AVAGO ALM-2412-TR1G AVAGO HSMH-C680AVAGO TLV320DAC23GQER TIWS1403-TR1AVAGO CY2509ZXC-1T CYLST2825-T-SC AGILENT ACPL-312T-300E AVAGO MAX853ESA+T MAXIM MAX3814CHJ+T MAXIM。

MAX3032EEUE+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.
MAX3030E/ MAX3031E
16 VCC 15 DI4 14 DO4+ 13 DO412 EN 11 DO310 DO3+ 9 DI3
TSSOP/SO
DI1 1 DO1+ 2 DO1- 3 EN1&2 4 DO2- 5 DO2+ 6
DI2 7 GND 8
MAX3032E/ MAX3033E
16 VCC 15 DI4 14 DO4+ 13 DO412 EN3&4 11 DO310 DO3+ 9 DI3
Ordering Information
ቤተ መጻሕፍቲ ባይዱ
TEMP RANGE 0°C to +70°C 0°C to +70°C
-40°C to +85°C -40°C to +85°C

MAX3030EEUE中文资料

Operating Temperature Ranges MAX303_EC_ ......................................................0°C to +70°C MAX303_EE_ ...................................................-40°C to +85°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.
Features
o Meet TIA/EIA-422-B (RS-422) and ITU-T V.11 Recommendation
o ±15kV ESD Protection on Tx Outputs o Hot-Swap Functionality o Guaranteed 20Mbps Data Rate (MAX3030E,
MAX3030E/ MAX3031E

MAX232中文资料(官方版)

新一代器件特性 ____________________________
♦ 对于低电压、集成 ESD 保护的应用 MAX3222E/MAX3232E/MAX3237E/MAX3241E/ MAX3246E：+3.0V 至 +5.5V、低功耗、速率高达 1Mbps、利用四个 0.1µF 电容实现真正的 RS-232 收发器 (MAX3246E 提供 UCSPTM 封装 )。 ♦ 对于低成本应用 MAX221E：±15kV ESD 保护、+5V、1µA、具有 AutoShutdownTM 功能的单芯片 RS-232。
________________________________ 应用
便携式计算机低功耗调制解调器接口转换电池供电 RS-232 系统多点 RS-232 网络
_____________________________ 定购信息
PART MAX220CPE MAX220CSE MAX220CWE MAX220C/D MAX220EPE MAX220ESE MAX220EWE MAX220EJE MAX220MJE TEMP RANGE 0°C to +70°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -55°C to +125°C PIN-PACKAGE 16 Plastic DIP 16 Narrow SO 16 Wide SO Dice* 16 Plastic DIP 16 Narrow SO 16 Wide SO 16 CERDIP 16 CERDIP

max3535e

________________________________概述MAX3535E/MXL1535E 是隔离型RS-485/RS-422全双工收发器，在RS-485/RS-422侧与控制器或控制逻辑侧之间提供2500V RMS 电隔离。

当隔离层两侧的共模电压(例如，地电位)相差很大时，这些器件可以跨越隔离层实现1000kbps 的快速通信。

隔离通过集成的高压电容实现。

MAX3535E/MXL1535E 还具有420kHz 变压器驱动器，可以利用外部变压器向RS-485侧提供电源。

MAX3535E/MXL1535E 中包括一个差分驱动器、一个接收器及其它内部电路，内部电路用来发送跨越隔离层(包括隔离电容)的RS-485信号和控制信号。

MAX3535E/MXL1535E RS-485接收器为1/8单位负载，在同一条总线上最多允许挂接256个器件。

MAX3535E/MXL1535E 提供真正的失效保护。

驱动器输出与接收器输入在接口侧具有±15kV 的静电放电(ESD)保护，符合人体模式(HBM)标准。

MAX3535E/MXL1535E 可以选择驱动器的摆率，减小了电磁干扰(EMI)并降低反射。

驱动器输出具有短路与过压保护。

其他特性包括热插拔、隔离层故障检测等。

MAX3535E 工作在+3V 至+5.5V 单电源。

由于改善了次级电源范围，MAX3535E 可以在+5V 供电时使用降压型变压器，达到可观的节电效果。

MXL1535E 工作在+4.5V 至+5.5V 单电源。

MXL1535E 是与LTC1535功能/引脚兼容的改进版本。

MAX3535E/MXL1535E 具有0°C 至+70°C 的商用级温度范围和-40°C 至+85°C 的扩展级温度范围。

________________________________应用隔离型RS-485系统高共模电压系统工业控制局域网远程通信系统________________________________特性♦使用片上高压电容，提供2500V RMS 的RS-485总线隔离♦1000kbps 全双工RS-485/RS-422通信♦+3V 至+5.5V 电源电压范围(MAX3535E)♦+4.5V 至+5.5V 电源电压范围(MXL1535E)♦1/8单位负载的接收器，总线上允许挂接256个器件♦具有HBM 的±15kV ESD 保护♦通过引脚选择的摆率限制，可以控制EMI ♦热插拔保护驱动器使能输入♦欠压锁定♦隔离层故障检测♦短路保护♦热关断♦具有传输线开路、短路失效保护的接收器输入MAX3535E/MXL1535E+3V 至+5V 、提供2500V RMS 隔离的RS-485/RS-422收发器，带有±15kV ESD 保护________________________________________________________________Maxim Integrated Products 119-3270; Rev 0; 4/04本文是Maxim 正式英文资料的译文，Maxim 不对翻译中存在的差异或由此产生的错误负责。

MAX4665ESE中文资料

PBX, PABX Systems Audio-Signal Routing Avionics
MAX4664CPE MAX4664ESE MAX4664EPE
0°C to +70°C -40°C to +85°C -40°C to +85°C
16 Plastic DIP 16 Narrow SO 16 Plastic DIP
SO/DIP
MAX4665
LOGIC
SWITCH
0
OFF
1
ON
SWITCHES SHOWN FOR LOGIC “0” INPUT
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
IN1 1 COM1 2
NO1 3 V- 4
MAX4664/MAX4665/MAX4666
5Ω, Quad, SPST, CMOS Analog Switches
ABSOLUTE MAXIMUM RATINGS
V+ to GND ..............................................................-0.3V to +44V V- to GND ..............................................................+0.3V to -44V V+ to V-...................................................................-0.3V to +44V VL to GND ........................................(GND - 0.3V) to (V+ + 0.3V) All Other Pins to DGND (Note 1) ......... (V- - 0.3V) to (V+ + 0.3V) Continuous Current (COM_, NO_, NC_) ........................±100mA Peak Current (COM_, NO_, NC_)

MAX202CSE中文资料

General DescriptionThe MAX200–MAX211/MAX213 transceivers are designed for RS-232 and V.28 communication inter-faces where ±12V supplies are not available. On-board charge pumps convert the +5V input to the ±10V need-ed for RS-232 output levels. The MAX201 and MAX209operate from +5V and +12V, and contain a +12V to -12V charge-pump voltage converter.The MAX200–MAX211/MAX213 drivers and receivers meet all EIA/TIA-232E and CCITT V.28 specifications at a data rate of 20kbps. The drivers maintain the ±5V EIA/TIA-232E output signal levels at data rates in excess of 120kbps when loaded in accordance with the EIA/TIA-232E specification.The 5µW shutdown mode of the MAX200, MAX205,MAX206, and MAX211 conserves energy in battery-powered systems. The MAX213 has an active-low shut-down and an active-high receiver enable control. Two receivers of the MAX213 are active, allowing ring indica-tor (RI) to be monitored easily using only 75µW power.The MAX211 and MAX213 are available in a 28-pin wide small-outline (SO) package and a 28-pin shrink small-outline (SSOP) package, which occupies only 40% of the area of the SO. The MAX207 is now avail-able in a 24-pin SO package and a 24-pin SSOP. The MAX203 and MAX205 use no external components,and are recommended for applications with limited circuit board space.ApplicationsComputersLaptops, Palmtops, Notebooks Battery-Powered Equipment Hand-Held Equipment Next-Generation Device Features ♦For Low-Cost Applications:MAX221E: ±15kV ESD-Protected, +5V, 1µA, Single RS-232 Transceiver with AutoShutdown™♦For Low-Voltage and Space-Constrained Applications:MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E: ±15kV ESD-Protected, Down to 10nA,+3.0V to +5.5V, Up to 1Mbps, True RS-232Transceivers (MAX3246E Available in UCSP™Package)♦For Space-Constrained Applications:MAX3228E/MAX3229E: ±15kV ESD-Protected,+2.5V to +5.5V, RS-232 Transceivers in UCSP ♦For Low-Voltage or Data Cable Applications:MAX3380E/MAX3381E: +2.35V TO +5.5V, 1µA,2Tx/2Rx RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic Pins ♦For Low-Power Applications:MAX3224E–MAX3227E/MAX3244E/MAX3245E:±15kV ESD-Protected, 1µA, 1Mbps, +3.0V to+5.5V, RS-232 Transceivers with AutoShutdown Plus™MAX200–MAX211/MAX213+5V , RS-232 Transceivers with 0.1µF External Capacitors ________________________________________________________________Maxim Integrated Products 119-0065; Rev 6; 10/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Ordering Information appears at end of data sheetAutoShutdown, AutoShutdown Plus, and UCSP are trademarks of Maxim Integrated Products, Inc.MAX200–MAX211/MAX213+5V , RS-232 Transceiverswith 0.1µF External Capacitors______________________________________________________________________________________19Ordering Information*Contact factory for dice specifications.M A X 200–M A X 211/M A X 213+5V , RS-232 Transceiverswith 0.1µF External Capacitors 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.20____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2003 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.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 .)。

MAX3235EEWP中文资料

CHARGE PUMP
_______________Ordering Information
R1IN
PART MAX3233ECWP MAX3233ECPP MAX3233EEWP MAX3233EEPP
TEMP. RANGE 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C
元器件交易网
±15kV ESD-Protected, 1µA, 250kbps, 3.3V/5V, Dual RS-232 Transceivers with Internal Capacitors MAX3233E/MAX3235E
ABSOLUTE MAXIMUM RATINGS
T2OUT GND VC2C2+ C1C1+ V+ V+
________________________Applications
Subnotebook and Palmtop Computers Cellular Phones Battery-Powered Equipment Hand-Held Equipment Peripherals Embedded Systems
The MAX3233E/MAX3235E are EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/ wake-up features, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 Air-Gap Discharge, to ±8kV using IEC 1000-4-2 Contact Discharge, and to ±15kV using the Human Body Model. The MAX3233E operates from a +3.3V supply; the MAX3235E operates from +5.0V. All devices achieve a 1µA supply current using Maxim’s revolutionary AutoShutdown Plus™ feature. These devices automatically enter a low-power shutdown mode when the following two conditions occur: either the RS-232 cable is disconnected or the transmitters of the connected peripherals are inactive, and the UART driving the transmitter inputs is inactive for more than 30 seconds. They turn on again when they sense a valid transition at any transmitter or receiver input. AutoShutdown Plus saves power without changes to the existing BIOS or operating system. The MAX3233E/MAX3235E have internal dual charge pumps requiring no external capacitors. Both transceivers have a proprietary low-dropout transmitter output stage that enables true RS-232 performance from a +3.0V to +3.6V supply for the MAX3233E or a +4.5V to +5.5V supply for the MAX3235E. These devices are guaranteed to operate up to 250kbps. Both are available in space-saving 20-pin wide SO or plastic DIP packages.

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。

MAX3032ECSE+T中文资料

General DescriptionThe MAX3030E–MAX3033E family of quad RS-422transmitters send digital data transmission signals over twisted-pair balanced lines in accordance with TIA/EIA-422-B and ITU-T V.11 standards. All transmitter outputs are protected to ±15kV using the Human Body Model.The MAX3030E–MAX3033E are available with either a 2Mbps or 20Mbps guaranteed baud rate. The 2Mbps baud rate transmitters feature slew-rate-limiting to mini-mize EMI and reduce reflections caused by improperly terminated cables.The 20Mbps baud rate transmitters feature low-static current consumption (I CC < 100µA), making them ideal for battery-powered and power-conscious applications.They have a maximum propagation delay of 16ns and a part-to-part skew less than 5ns, making these devices ideal for driving parallel data. The MAX3030E–MAX3033E feature hot-swap capability that eliminates false transitions on the data cable during power-up or hot insertion.The MAX3030E–MAX3033E are low-power, ESD-pro-tected, pin-compatible upgrades to the industry-stan-dard 26LS31 and SN75174. They are available in space-saving 16-pin TSSOP and SO packages.ApplicationsTelecom Backplanes V.11/X.21 Interface Industrial PLCs Motor ControlFeatureso Meet TIA/EIA-422-B (RS-422) and ITU-T V.11Recommendation o ±15kV ESD Protection on Tx Outputs o Hot-Swap Functionalityo Guaranteed 20Mbps Data Rate (MAX3030E,MAX3032E)o Slew-Rate-Controlled 2Mbps Data Rate (MAX3031E, MAX3033E)o Available in 16-Pin TSSOP and Narrow SO Packages o Low-Power Design (<330µW, V CC = 3.3V Static) o +3.3V Operationo Industry-Standard Pinout o Thermal ShutdownMAX3030E–MAX3033E±15kV ESD-Protected, 3.3V QuadRS-422 Transmitters________________________________________________________________Maxim Integrated Products 1Ordering Information19-2671; Rev 0; 10/02For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Pin ConfigurationsM A X 3030E –M A X 3033E±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC ELECTRICAL CHARACTERISTICSStresses 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.(All Voltages Are Referenced to Device Ground, Unless Otherwise Noted)V CC ........................................................................................+6V EN1&2, EN3&4, EN, EN ............................................-0.3V to +6V DI_............................................................................-0.3V to +6V DO_+, DO_- (normal condition).................-0.3V to (V CC + 0.3V)DO_+, DO_- (power-off or three-state condition).....-0.3V to +6V Driver Output Current per Pin.........................................±150mAContinuous Power Dissipation (T A = +70°C)16-Pin SO (derate 8.70mW/°C above +70°C)..............696mW 16-Pin TSSOP (derate 9.40mW/°C above +70°C).......755mW Operating Temperature RangesMAX303_EC_......................................................0°C to +70°C MAX303_EE_...................................................-40°C to +85°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +160°C Lead Temperature (soldering, 10s).................................+300°CMAX3030E–MAX3033E±15kV ESD-Protected, 3.3V QuadRS-422 TransmittersSWITCHING CHARACTERISTICS—MAX3030E, MAX3032ESWITCHING CHARACTERISTICS —MAX3031E, MAX3033EM A X 3030E –M A X 3033E±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters 4_______________________________________________________________________________________SWITCHING CHARACTERISTICS —MAX3031E, MAX3033E (continued)(3V ≤V CC ≤3.6V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at V CC = +3.3V and T A = +25°C.)Note 1:All currents into the device are positive; all currents out of the device are negative. All voltages are referenced to deviceground, unless otherwise noted.Note 2:∆V OD and ∆V OC are the changes in V OD and V OC , respectively, when DI changes state. Note 3:Only one output shorted at a time.Note 4:This input current is for the hot-swap enable (EN_, EN, EN ) inputs and is present until the first transition only. After the firsttransition, the input reverts to a standard high-impedance CMOS input with input current I LEAK .DIFFERENTIAL OUTPUT VOLTAGEvs. OUTPUT CURRENTOUTPUT CURRENT (mA)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 )906030123400120OUTPUT CURRENTvs. TRANSMITTER OUTPUT LOW VOLTAGEM A X 3030E t o c 02OUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )32150100150200004OUTPUT CURRENTvs. TRANSMITTER OUTPUT HIGH VOLTAGEM A X 3030E t o c 03OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )321255075100125150004Typical Operating Characteristics(V CC = +3.3V and T A = +25°C, unless otherwise noted.)MAX3030E–MAX3033E±15kV ESD-Protected, 3.3V QuadRS-422 Transmitters_______________________________________________________________________________________5SUPPLY CURRENT vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (µA )32120406080100004MAX3030E/MAX3032ESUPPLY CURRENT vs. DATA RATEDATA RATE (bps)S U P P L Y C U R R E N T (m A )10M1M100k10k1k5101520253000.1k100MMAX3031E/MAX3033ESUPPLY CURRENT vs. DATA RATEDATA RATE (bps)S U P P L Y C U R R E N T(m A )1M100k10k1k0.51.01.52.02.50.1k10MMAX3030E/MAX3032ESUPPLY CURRENT vs. DATA RATEDATA RATE (bps)S U P P L Y C U R R E N T (m A )10M1M100k10k1k90100110120130800.1k100MMAX3031E/MAX3033ESUPPLY CURRENT vs. DATA RATEDATA RATE (bps)S U P P L Y C U R R E N T (m A )1M100k10k1k919497100880.1k10MMAX3030EDRIVER PROPAGATION DELAY(LOW TO HIGH)MAX3030E toc0910ns/divDIFFERENTIAL OUTPUT 2V/divDI_1V/divMAX3030EDRIVER PROPAGATION DELAY(HIGH TO LOW)MAX3030E toc1010ns/divDIFFERENTIAL OUTPUT 2V/divDI_1V/divMAX3031EDRIVER PROPAGATION DELAY(LOW TO HIGH)MAX3030E toc1120ns/divDIFFERENTIAL OUTPUT 2V/divDI_1V/divMAX3031EDRIVER PROPAGATION DELAY(HIGH TO LOW)MAX3030E toc1220ns/divDIFFERENTIAL OUTPUT 2V/divDI_1V/divTypical Operating Characteristics (continued)(V CC = +3.3V and T A = +25°C, unless otherwise noted.)M A X 3030E –M A X 3033E±15kV ESD-Protected, 3.3V Quad RS-422 TransmittersENABLE RESPONSE TIMEMAX3030E toc1320ns/div ENABLE 1V/divDIFFERENTIAL OUTPUT 2V/divMAX3033E EYE DIAGRAMMAX3030E toc14100ns/divDO_+1V/divDO_-1V/divTypical Operating Characteristics (continued)(V CC = +3.3V and T A = +25°C, unless otherwise noted.)MAX3030E–MAX3033E±15kV ESD-Protected, 3.3V QuadRS-422 Transmitters_______________________________________________________________________________________7Test Circuits and Timing DiagramsTime Test CircuitFigure 4. Driver Enable/Disable Delays Test CircuitFigure 3. Differential Driver Propagation Delay and Transition WaveformM A X 3030E –M A X 3033EDetailed DescriptionThe MAX3030E –MAX3033E are high-speed quad RS-422 transmitters designed for digital data transmission over balanced lines. They are designed to meet the requirements of TIA/EIA-422-B and ITU-T V.11. The MAX3030E –MAX3033E are available in two pinouts to be compatible with both the 26LS31 and SN75174industry-standard devices. Both are offered in 20Mbps and 2Mbps baud rate. All versions feature a low-static current consumption (I CC < 100µA) that makes them ideal for battery-powered and power-conscious appli-cations. The 20Mbps version has a maximum propaga-tion delay of 16ns and a part-to-part skew less than 5ns, allowing these devices to drive parallel data. The 2Mbps version is slew-rate-limited to reduce EMI and reduce reflections caused by improperly terminated cables.Outputs have enhanced ESD protection providing ±15kV tolerance. All parts feature hot-swap capability that eliminates false transitions on the data cable dur-ing power-up or hot insertion.±15kV ESD ProtectionAs with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electro-static discharges encountered during handling and assembly. The driver outputs and receiver inputs have extra protection against static electricity. Maxim ’s engi-neers developed state-of-the-art structures to protect these pins against ESD of ±15kV without damage. The ESD structures withstand high ESD in all states: normal operation and power-down. After an ESD event, the MAX3030E –MAX3033E keep working without latchup.ESD protection can be tested in various ways; thetransmitter outputs of this product family are character-ized for protection to ±15kV using the Human Body Model. Other ESD test methodologies include IEC10004-2 Contact Discharge and IEC1000-4-2 Air-Gap Discharge (formerly IEC801-2).ESD Test ConditionsESD performance depends on a variety of conditions.Contact Maxim for a reliability report that documents test setup, test methodology, and test results.Human Body ModelFigure 8 shows the Human Body Model, and Figure 9shows the current waveform it generates when dis-charged into low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest,which is then discharged into the test device through a 1.5k Ωresistor.±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters 8_______________________________________________________________________________________Figure 7. Power-Off MeasurementsTest Circuits andTiming Diagrams (continued)Machine ModelThe Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis-tance. Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. Of course, all pins require this protec-tion during manufacturing, not just inputs and outputs.Therefore, after PC board assembly, the Machine Model is less relevant to I/O ports.Hot SwapWhen circuit boards are plugged into a “hot ” back-plane, there can be disturbances to the differential sig-nal levels that could be detected by receivers connected to the transmission line. This erroneous data could cause data errors to an RS-422 system. To avoid this, the MAX3030E –MAX3033E have hot-swap capa-ble inputs.When a circuit board is plugged into a “hot ” backplane,there is an interval during which the processor is going through its power-up sequence. During this time, the processor ’s output drivers are high impedance and are unable to drive the enable inputs of the MAX3030E –MAX3033E (EN, EN , EN_) to defined logic levels.Leakage currents from these high-impedance drivers,of as much as 10µA, could cause the enable inputs of the MAX3030E –MAX3033E to drift high or low.Additionally, parasitic capacitance of the circuit board could cause capacitive coupling of the enable inputs to either G ND or V CC . These factors could cause the enable inputs of the MAX3030E –MAX3033E to drift to levels that may enable the transmitter outputs. To avoid this problem, the hot-swap input provides a method of holding the enable inputs of the MAX3030E –MAX3033E in the disabled state as V CC ramps up. This hot-swap input is able to overcome the leakage currents and par-asitic capacitances that can pull the enable inputs to the enabled state.Hot-Swap Input CircuitryIn the MAX3030E –MAX3033E, the enable inputs feature hot-swap capability. At the input there are two NMOS devices, M1 and M2 (Figure 10). When V CC is ramping up from zero, an internal 6µs 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 EN to GND through a 5.6k Ωresistor. M2 is designed to pull the EN input to the disabled state against an external parasitic capacitance of up to 100pF that is trying to enable the EN input. After 6µs, the timer turns M2 off and M1 remains on, holding the EN input low against three-state output leakages that might enable EN. M1 remains on until an external source overcomes the required inputcurrent. At this time the SR latch resets and M1 turns off.When M1 turns off, EN reverts to a standard, high-impedance CMOS input. Whenever V CC drops below 1V, the hot-swap input is reset. The EN1&2 and EN3&4input structures are identical to the EN input. For the EN input, there is a complementary circuit employing two PMOS devices pulling the EN input to V CC .Hot-Swap Line TransientThe circuit of Figure 11 shows a typical offset termina-tion used to guarantee a greater than 200mV offset when a line is not driven. The 50pF capacitor repre-MAX3030E–MAX3033E±15kV ESD-Protected, 3.3V QuadRS-422 Transmitters_______________________________________________________________________________________9Figure 10. Simplified Structure of the Driver Enable Pin (EN)Figure 11. Differential Power-Up Glitch (Hot Swap)M A X 3030E –M A X 3033Esents the minimum parasitic capacitance that would exist in a typical application. In most cases, more capacitance exists in the system and reduces the mag-nitude of the glitch. During a “hot-swap ” event when the driver is connected to the line and is powered up, the driver must not cause the differential signal to drop below 200mV (Figures 12 and 13).Operation of Enable PinsThe MAX3030E –MAX3033E family has two enable-func-tional versions.The MAX3030E/MAX3031E are compatible with 26LS31, where the two enable signals control all four transmitters (global enable).The MAX3032E/MAX3033E are compatible with the SN75174. EN1&2 controls transmitters 1 and 2, and EN 3&4 controls transmitters 3 and 4 (dual enable).Typical ApplicationsThe MAX3030E –MAX3033E offer optimum performance when used with the MAX3094E/MAX3096 3.3V quad differential line receivers. Figure 14 shows a typical RS-422 connection for transmitting and receiving data.±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters 10______________________________________________________________________________________4µs/divFigure 12. Differential Power-Up Glitch (0.1V/µs) 1.0µs/divDO_+DO_+ - DO_-DO_-V 1V/divFigure 13. Differential Power-Up Glitch (1V/µs)EN TX1TX4MODE0Active Active All transmitters active 1High-Z High-Z High-Z All transmitters disabled 0Active Active All transmitters active 1ActiveActiveAll transmitters activeTable 1. MAX3030E/MAX3031E Transmitter ControlsTable 2. MAX3032E/MAX3033E Transmitter ControlsMAX3030E–MAX3033E±15kV ESD-Protected, 3.3V QuadRS-422 Transmitters______________________________________________________________________________________11Figure 14. Typical Connection of a Quad Transmitter and Quad Receiver as a PairM A X 3030E –M A X 3033E±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters 12______________________________________________________________________________________Figure 15. MAX3030E/MAX3031E Functional DiagramFigure 16. MAX3032E/MAX3033E Functional DiagramChip InformationTRANSISTOR COUNT: 1050PROCESS: BiCMOSMAX3030E–MAX3033E±15kV ESD-Protected, 3.3V QuadRS-422 Transmitters______________________________________________________________________________________13Package 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 3030E –M A X 3033E±15kV ESD-Protected, 3.3V Quad RS-422 Transmitters 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.14____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2002 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 .)。

MAX3353EEBP-T中文资料

General DescriptionThe MAX3353E I 2C™-compatible USB On-the-G o (OTG ) regulated charge pump with switchable pullup/pulldown resistors allows peripherals and mobile devices such as PDAs, cellular phones, and digital cameras to be interconnected without a host PC.The MAX3353E enables a system with an integrated USB dual-role transceiver to function as a USB OTG dual-role device. The charge pump in the MAX3353E supplies V BUS power and signaling that is required by the transceiver as defined in On-the-Go Supplement:USB 2.0, R evision 1.0. The MAX3353E provides the switchable pullup and pulldown resistors on D+ and D-required for a dual-role device.The MAX3353E integrates a regulated charge pump,switchable pullup/pulldown resistors, and an I 2C-com-patible 2-wire serial interface. The device provides a detector to monitor ID status and operates with logic supply voltages (V L ) between +1.65V and V CC and charge-pump supply voltages (V CC ) from +2.6V to +5.5V. The charge pump supplies an OTG-compatible output on V BUS while sourcing 8mA output current.The MAX3353E enables USB OTG communication between digital logic parts that cannot supply or tolerate the +5V V BUS levels that USB OTG requires. By control-ling and measuring V BUS using internal comparators,this device supports USB OTG session request protocol (SRP) and host negotiation protocol (HNP).The MAX3353E has built-in ±15kV ESD protection circuitry to guard V BUS , ID_IN, D+, and D-. The MAX3353E is available in a 5 x 4 chip-scale package (UCSP™) and 16-pin TSSOP package.ApplicationsMobile Phones PDAsDigital Cameras MP3 Players Photo PrintersFeatures♦Ideal for Enabling USB Dual-Role Components for USB OTG Protocol ♦Charge Pump for V BUS Signaling and Operation Down to +2.6V ♦Level Translators Allow Low-Voltage System Interface ♦Internal V BUS Comparators and ID Detector ♦Internal Switchable Pullup and Pulldown Resistors for Host/Peripheral Functionality ♦I 2C-Compatible Bus Interface with Command and Status Registers ♦Interrupt Features♦±15kV ESD Protection on ID_IN, V BUS , D+, and D-♦Supports SRP and HNP♦Available in 5 x 4 UCSP and 16-Pin TSSOPMAX3353EUSB On-the-Go Charge Pump with SwitchablePullup/Pulldown Resistors________________________________________________________________Maxim Integrated Products 1Functional DiagramOrdering Information19-2845; Rev 1; 10/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .UCSP is a trademark of Maxim Integrated Products, Inc.Purchase of I 2C components from Maxim Integrated Products,Inc., or one of its sublicensed Associated Companies, conveys a license under the Philips I 2C Patent Rights to use these com-ponents in an I 2C system, provided that the system conforms to the I 2C Standard Specification as defined by Philips.Pin Configurations appear at end of data sheet.Typical Applications Circuit appears at end of data sheet.M A X 3353EUSB On-the-Go Charge Pump with Switchable Pullup/Pulldown Resistors 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +2.6V to +5.5V, V L = +1.65V to V CC , V TRM = +3V to +3.6V, C FLYING = 0.1µF, V CC decoupled with 1µF capacitor to ground;V TRM and V L decoupled with 0.1µF capacitor to ground; C VBUS = 1µF (min), T A = T MIN to T MAX , unless otherwise noted. Typical values are at V= +4V, V = +1.8V, V = +3.3V, and T = +25°C.) (Notes 3, 4)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.(All voltages referenced to GND.)V CC ,V L , V TRM ..........................................................-0.3V to +6V D+, D-, ID_IN (Note 1)..............................................-0.3V to +6V V BUS (Notes 1, 2).....................................................-0.3V to +6V C+..................................................................(V CC - 0.3V) to +6V C-................................................................-0.3V to (V CC + 0.3V)INT , ID_OUT..................................................-0.3V to (V L + 0.3V)SDA, SCL, ADD .......................................................-0.3V to +6V V BUS Output Short Circuit to Ground .......................Continuous Output Current (all other pins) .........................................±15mA Continuous Power Dissipation (T A = +70°C)16-Pin TSSOP (derate 9.4mW/°C above +70°C).........755mW 5 x 4 UCSP (derate 7.8mW/°C above +70°C).............625mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Junction Temperature......................................................+150°C Lead Temperature (soldering 10s) .................................+300°C Bump Temperature (soldering)Infrared (15s)...............................................................+200°C Vapor Phase (20s).......................................................+215°CNote 1:15kV ESD protected.Note 2:V BUS can be backdriven to +6V.MAX3353EUSB On-the-Go Charge Pump with SwitchablePullup/Pulldown ResistorsELECTRICAL CHARACTERISTICS (continued)(V CC = +2.6V to +5.5V, V L = +1.65V to V CC , V TRM = +3V to +3.6V, C FLYING = 0.1µF, V CC decoupled with 1µF capacitor to ground;V TRM and V L decoupled with 0.1µF capacitor to ground; C VBUS = 1µF (min), T A = T MIN to T MAX , unless otherwise noted. TypicalM A X 3353EUSB On-the-Go Charge Pump with Switchable Pullup/Pulldown ResistorsELECTRICAL CHARACTERISTICS (continued)(V CC = +2.6V to +5.5V, V L = +1.65V to V CC , V TRM = +3V to +3.6V, C FLYING = 0.1µF, V CC decoupled with 1µF capacitor to ground;V TRM and V L decoupled with 0.1µF capacitor to ground; C VBUS = 1µF (min), T A = T MIN to T MAX , unless otherwise noted. Typical TIMING CHARACTERISTICS(V CC = +2.6V to +5.5V, V L = +1.65V to V CC , V TRM = +3V to +3.6V, C FLYING = 0.1µF, V CC decoupled with 1µF capacitor to ground.V TRM and V L decoupled with 0.1µF capacitor to ground. C VBUS = 1µF (min), T A = T MIN to T MAX , unless otherwise noted. Typical val-ues are at T = +25°C, V = +4V, V = +1.8V, V = +3.3V.) (Notes 3, 4)MAX3353EUSB On-the-Go Charge Pump with SwitchablePullup/Pulldown Resistors_______________________________________________________________________________________5TIMING CHARACTERISTICS (continued)(V CC = +2.6V to +5.5V, V L = +1.65V to V CC , V TRM = +3V to +3.6V, C FLYING = 0.1µF, V CC decoupled with 1µF capacitor to ground.V TRM and V L decoupled with 0.1µF capacitor to ground. C VBUS = 1µF (min), T A = T MIN to T MAX , unless otherwise noted. Typical val-(V CC = +2.6V to +5.5V, V L = +1.65V to V CC , V TRM = +3V to +3.6V, C FLYING = 0.1µF, V CC decoupled with 1µF capacitor to ground.ground unless otherwise specified.Note 4:Parameters are 100% production tested at +25°C, limits over temperature are guaranteed by design.Note 5:The V BUS current source and current gate time vary together with process and temperature such that the resulting V BUSpulse is guaranteed to drive a <13µF load to a voltage >2.0V, and to drive a >96µF load to a volatge <2.2V.See the SRP V BUS Pulsing section for an explanation of this self-timed pulse.Note 6:Guaranteed by design, not production tested.Note 7:A master device must provide a hold time of at least 300ns for the SDA signal to bridge the undefined region of SCL’s fallingedge.Note 8:C B is total capacitance of one bus line in pF. Tested with C B = 400pF.Note 9:Input filters on SDA, SCL, and ADD suppress noise spikes less than 50ns.M A X 3353EUSB On-the-Go Charge Pump with Switchable Pullup/Pulldown Resistors 6_______________________________________________________________________________________Typical Operating Characteristics(V CC = +3V, V L = +2.5V, C FLYING = 0.1µF, C VBUS = 1µF (ESR CVBUS = 0.1Ω), T A = +25°C.)040208060100120050INPUT CURRENT vs. OUTPUT CURRENTOUTPUT CURRENT (mA)I N P U T C U R R E N T (m A )201030404.004.504.254.755.005.25050V BUS OUTPUT VOLTAGE vs. V BUS OUTPUT CURRENTOUTPUT CURRENT (mA)V B U S O U T P U T V O L T A G E (V )201030404.704.804.754.854.902.5V BUS OUTPUT VOLTAGE vs. INPUT VOLTAGEINPUT VOLTAGE (V)V B U S O U T P U T V O L T A G E (V )4.03.53.05.04.55.5MAX3353 toc04200μs/div I CC5mA/divSCL 5V/div TIME TO ENTER SHUTDOWNMAX3353 toc05100μs/div I CC10mA/divSCL 5V/divTIME TO EXIT SHUTDOWN40ms/divV BUS 1V/divV BUS 1V/divC L = 10μFC L = 96μFV BUS WITH CAPACITIVE LOAD65.067.066.566.065.567.568.0-4085V BUSINPUT IMPEDANCE vs. TEMPERATURETEMPERATURE (°C)V B U S I N P U T I M P E D A N C E (k Ω)10-1535601618171920-4085SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (m A )10-153560Detailed Description The MAX3353E integrates a regulated charge pump, switchable pullup/pulldown resistors, and an I2C-compatible 2-wire serial interface. The internal level shifter allows the device to operate with logic supply volt-ages (V L) between +1.65V and V CC. The MAX3353E’s OTG-compliant charge pump operates with input supply voltages (V CC) from +2.6V to +5.5V and supplies an OTG-compatible output on V BUS while sourcing 8mA output current.The MAX3353E level-detector comparators monitor impor-tant V BUS voltages needed to support SRP and HNP and provides an interrupt output signal for OTG events that require action. The V BUS power-control block performs the various switching functions required by an OTG dual-role device and is programmable by system logic.For OTG operation, D+ and D- are connected to switch-able pulldown resistors (host) and switchable pullup resistors (peripheral) controlled by internal registers.The MAX3353E’s OTG-compliant charge-pump operateswith input supply voltages (V CC) from +2.6V to +5.5Vand supplies an OTG-compatible output on V BUS withthe capability of sourcing 8mA (min) output current.When V BUS is not providing power, an input impedanceof no more than 100kΩand no less than 40kΩto GND is present on V BUS. When V BUS provides power, the risetime on V BUS from 0 to 4.4V is no longer than 100mswhen driving a constant current load of 8mA and an external load capacitance of 13µF.During a continuous short circuit on V BUS,the charge-pump output is current limited to 140mA (typ). Thermal-shutdown circuitry turns off the charge pump if the die temperature exceeds +150°C and restarts when the diecools to 140°C.Level Shifters Internal level shifters allow the system-side interface torun at logic supply voltages as low as 1.65V. Interfacelogic signals are referenced to the voltage applied to V L.MAX3353EUSB On-the-Go Charge Pump with SwitchablePullup/Pulldown Resistors _______________________________________________________________________________________7M A X 3353EV BUS Level-Detection ComparatorsComparators drive status register bits 0, 1, and 2 to indicate these important USB OTG V BUS voltage levels:•V BUS is valid (V BUS > 4.6V)• A USB session is valid (V BUS > 1.4V)• A USB session is ended (V BUS < 0.5V)The 4.6V comparator sets bit 0 in status register V BUS_VALID to 1 if V BUS > 4.6V. The A Device uses the V BUS valid status bit (V BUS_VALID ) to determine if the B Device is sinking too much current (i.e., is not supported).The interrupt can be associated to either a positive or a negative transition. The 1.4V comparator sets bit 1 of sta-tus register SESSION_VALID to 1 if V BUS > 1.4V. This sta-tus bit indicates that a data transfer session is valid and the interrupt can be associated to either a positive or a negative transition. The session-end comparator sets bit 2 in the status register SESSION_END to a 1 when V BUS < 0.5V, and generates an interrupt when V BUS falls below 0.5V. Figure 1 shows the level-detector comparators.Interrupt LogicWhen OTG events require action, the MAX3353E pro-vides an interrupt output signal on INT . An interrupt is triggered (INT goes low) when one of the conditions specified by the interrupt-mask register and interrupt-edge register is verified. INT stays active until the inter-rupt is cleared by reading the interrupt latch register.ShutdownIn shutdown mode, the MAX3353E’s quiescent current is reduced to less than 2µA. Bit 0 in control register 2controls the shutdown feature. Setting bit 0 = 1 places the device in shutdown mode (Figure 2, Table 5). When in shutdown, the MAX3353E’s charge-pump current generator and V BUS detection comparators are turned off. During shutdown, the I 2C serial interface is fully functional and registers can be read from or written to.ID_IN and ID_OUT are both functional in shutdown.V BUS Power ControlV BUS is a dual-function I/O that can supply USB OTG-compliant voltage to the USB. The V BUS power-control block performs the various switching functions required by an OTG dual-role device. This action is programmed by the system logic using internal register control bits in control register 2.•Discharge V BUS through a resistor to ensure a ses-sion is not in progress.•Charge V BUS through an internal current generator to initiate SRP (session request protocol).•Connect the charge pump to V BUS to provide power on V BUS .Bit 0 (SDWN) in control register 2 is used to place the MAX3353E in normal operation or shutdown mode.Setting bit 1 (V BUS_CHG1) issues a timed pulse on V BUS suitable for implementing the session request protocol (see the SRP V BUS Pulsing section). The pulse is created by turning a current source – supplied by V CC and con-nected to V BUS – on and off. Setting control register bit 2 (V BUS_CHG2) to 1 charges VBUS through the current source continuously. Setting V BUS_CHG2to zero discon-nects the current source. Bit 3 (V BUS_DRV ) turns theUSB On-the-Go Charge Pump with Switchable Pullup/Pulldown Resistors 8_______________________________________________________________________________________Figure 1. Comparator Network DiagramFigure 2. Power-Control Block Diagramcharge pump on and off to power V BUS. Bit 4 in control register 2 (V BUS_DISCHG) is used to discharge V BUS through a 5kΩresistor. Figure 2 and Table 2 show power control.Autoconnect and Autoresponse USB OTG defines the HNP, where the default host (A Device) can pass the host responsibilities off to the default peripheral (B Device). This protocol can be han-dled entirely by the firmware and controlling logic that dri-ves the OTG transceiver. The MAX3353E has the option to automatically perform some of the required signaling for some of the timing-critical events in the HNP process. The automatic signaling used by the A Device, when it transfers host control to the B Device, is defined by the OTG transceiver supplement and is known as autocon-nect. Autoconnect allows the transceiver to automatically connect the A Device’s D+ pullup resistor during HNP. Autoconnect is enabled when the MAX3353E is config-ured as an A Device (ID_IN = 0) and the BDISC_ACONN control bit is set.The MAX3353E also has the capability to automate the signaling used by the B Device when it assumes host control from the A Device. This autoresponse is not speci-fied by the OTG-transceiver supplement. Autoresponse causes the B Device to automatically assert a bus reset by driving a single-ended zero (SE0: both D+ and D- dri-ven low) onto USB in response to the A Device connect-ing its D+ pullup resistor. Autoresponse is enabled when the MAX3353E is configured as a B Device and the BDISC_ACONN control bit is set.Note: In a system, D+ and D- are also driven by a trans-ceiver in an ASIC or other device. The autoresponse mode should not be used unless the system designer can ensure that there is no bus conflict between the transceiver and the MAX3353E driving USB to SE0.Autoconnect Details When the MAX3353E is configured as an A Device (ID_IN = G ND), it can enable autodetect by setting BDISC_ACONN to one. This should be done after the USB is in the suspend state (>3ms with no traffic). The MAX3353E monitors D+/D- for an SE0. The presence of the SE0 indicates that the B Device has disconnected its pullup resistor, the first step in HNP. When SE0 is detected, the MAX3353E automatically turns on its internal pullup resistor to the D+ line within 3ms. There are two ways for firmware to ascertain that the MAX3353E has automatically turned on its D+ pullup during HNP:1)The A_HNP status bit goes high when the D+ pullupis automatically connected during HNP 2)The A_HNP_EN control bit is set, and an interrupt isissued as the D+ pullup is connected (see also theInterrupt Logic section).By clearing BDISC_ACONN bit, the D+ pullup is discon-nected. After a successful autoconnect operation, the firmware should set the DP_PULLUP control bit before clearing the BDISC_ACONN bit; this ensures that theD+ pullup remains connected.Note:The autoconnect works only if MAX3353E is notin shutdown.Autoresponse DetailsWhen the MAX3353E is configured as a B Device(ID_IN = open), setting the BDISC_ACONN control bit enables the autoresponse feature. Using this feature,the MAX3353E automatically issues a USB bus resetwhen the A Device becomes a peripheral. Firmwarecan take advantage of the autoresponse feature of theMAX3353E by doing the following:•Ensure that the system transceiver is in USB-sus-pend mode. Wait until the USB-suspend conditionsare met (no USB activity for >3ms). Enable auto-response. Set the BDISC_ACONN control bit. Signala USB disconnect. Firmware clears the DP_PULLUPcontrol bit, which disconnects the D+ pullup resis-tor. At this point, the MAX3353E waits at least 25µsbefore enabling its internal USB line monitor todetect if the A Device has attached its D+ pullup;this ensures that the D+ line is not high due to theresidual effect of the B Device pullup. When the ADevice has connected its D+ pullup, the MAX3353Eissues a bus reset (SE0) and the B_HNP status bitgoes high.•Wait for B_HNP to go high; output SE0 from the ASIC or other device on D+/D-. Disable autore-sponse. By clearing BDISC_ACONN bit, the SE0generator is turned off. The SE0 is maintained by thesystem USB transceiver.Note:The autoresponse works only if the MAX3353E isnot in shutdown.SRP V BUS Pulsing Session request protocol (SRP) is designed to allowthe A Device (default host) to conserve power by turn-ing off V BUS when there is no USB traffic. The B Device (default peripheral) can request the A Device to turnV BUS on and initiate a new session through SRP.The B Device must initiate SRP in two ways: data-lineand V BUS pulsing. Firmware is responsible for turningon and off the pullup resistor on D+ to implementdata-line pulsing. Firmware can also be used to turn onand off a current source to implement V BUS pulsing.MAX3353EUSB On-the-Go Charge Pump with SwitchablePullup/Pulldown Resistors _______________________________________________________________________________________9M A X 3353EThe MAX3353E also has a special feature that allows it to control the timing of the V BUS pulse.Since an OTG device could be plugged into a PC, the V BUS pulse must be particularly well controlled to prevent damage to a PC host. For this reason, V BUS pulsing is done by turning on and off a current source. The V BUS pulse must be timed so it drives a 13µF load (when it is connected to the A Device) to a voltage greater than 2.1V, and it drives a >96µF load (when it is connected to a standard PC) to a voltage less than 2.0V.Firmware can control the current source and the timing of the V BUS pulse through the V BUS_CHG2control bit.The MAX3353E also has the capability to time the pulseitself. Firmware initiates the self-timed V BUS pulse bysetting the V BUS_CHG1control bit to 1.The internal timer and current generator guarantee that the V BUS voltage goes above 2.1V if C VBUS <13µF within 90ms and stands below 2.0V if C VBUS >96µF.Once the time has elapsed, if another V BUS pulse is required, it is necessary to clear the V BUS_CHG1bit and then set it again.Note: SRP V BUS pulsing and its associated current gen-erator work only if the MAX3353E is not in shutdown.Data-Line Pullup and Pulldown ResistanceFor OTG operation, D+ and D- are connected to switch-able pulldown resistors (host) and switchable pullup resistors (peripheral). Data-line pullup/pulldown resistors are individually controlled through data bits 4 through 7 in control register 1. Two 15k Ωpulldown resistors allow the device to be set as a host and are asserted by bits 6 and 7. The 1.5k Ωpullup resistor is applied to the data lines through SW1 and SW2, which are controlled by bits 4 and 5. D+ pullup has higher priority to avoid direct connection of D+ and D-. Each of the control bits controls a designat-ed switch; therefore, pullup and pulldown switches can be asserted at the same time. A simplified schematic of the switching network is shown in Figure 3.The bidirectional D+ and D- lines are ESD protected to ±15kV, reducing external components in many applications.Applications Information2-Wire I 2C-Compatible Serial InterfaceA register file that interfaces to the control logic uses a simple 2-wire interface operating up to 400kHz to con-trol the various switches and modes.Serial AddressingThe MAX3353E operates as a slave that sends and receives control and status signals through an I 2C-compatible 2-wire interface. The interface uses a serial data line (SDA) and a serial clock line (SCL) to achieveUSB On-the-Go Charge Pump with Switchable Pullup/Pulldown Resistorsbidirectional communication between master(s) and slave(s). A master (typically a microcontroller) initiates all data transfers to and from the MAX3353E and gen-erates the SCL clock that synchronizes the data trans-fer (Figure 4).The MAX3353E SDA line operates as both an input and an open-drain output. A pullup resistor (4.7kΩtyp) is required on SDA. The MAX3353E SCL line operates only as an input. A pullup resistor (4.7kΩtyp) is required on SCL if there are multiple masters on the 2-wire interface, or if the master in a single-master system has an open-drain SCL output.Each transmission consists of a START condition (Figure 5) sent by a master, followed by the MAX3353E 7-bit slave address plus R/W bit (Figure 6), a register address byte, one or more data bytes, and finally a STOP condition (Figure 5).Start and Stop Conditions Both SCL and SDA remain high when the interface is not busy. A master signals the beginning of a transmis-sion with a START (S) condition by transitioning SDA from high to low while SCL is high. When the master has finished communicating with the slave, it issues a STOP (P) condition by transitioning the SDA from low to high while SCL is high. The bus is then free for another transmission (Figure 5).Bit Transfer One data bit is transferred during each clock pulse. The data on the SDA line must remain stable while SCL is high (Figure 7).Acknowledge The acknowledge bit is the clocked ninth bit that the recipient uses to handshake receipt of each byte of data (Figure 8). Thus, each byte transferred effectively requires 9 bits. The master generates the 9th clock pulse, and the recipient pulls down SDA during the acknowledge clock pulse, such that the SDA line is sta-ble low during the high period of the clock pulse. When the master is transmitting to the MAX3353E, theMAX3353E generates the acknowledge bit because itis the recipient. When the MAX3353E is transmitting tothe master, the master generates the acknowledge bit because the master is the recipient.Slave AddressThe MAX3353E has a 7-bit-long slave address. The eighth bit following the 7-bit slave address is the R/Wbit. It is low for a write command, high for a read com-mand. The first 6 bits (MSBs) of the MAX3353E slave address are always 010110. Select slave address bitA0 by connecting the address input ADD to V L, GND,or leave floating (ADD is internally pulled to G ND through a 110kΩresistor). The MAX3353E has two pos-sible slave addresses (Table 1). As a result, only twoMAX3353E devices can share the same interface.Write Byte FormatA write to the MAX3353E comprises the transmission ofthe MAX3353E’s slave address with the R/W bit set to zero, followed by 2 bytes of information. The first byteof information is the command byte that determineswhich register of the MAX3353E is to be written by the second byte. The second byte is the data that goes intothe register that is set by the first byte. Figure 9 showsthe typical write byte format.Read Byte FormatA read from the MAX3353E comprises the transmissionof the MAX3353E’s slave address (from the master)with the R/W bit set to zero, followed by one byte con-taining the address of the register, from which the mas-ter is going to read data, and then followed byMAX3353E’s slave address again with the R/W bit setto one. After that one byte of data is being read by the master. Figure 10 shows the read byte format that mustbe used. To read many contiguous registers, multiple accesses are required.RegistersControl Registers (10h, 11h)There are two read/write control registers. Control reg-ister 1 is used to set D+, D- pullup or pulldown, and toset interrupt output to open-drain or push-pull. Control register 2 is the bus control register used to control thebus operation and put the device into shutdown mode. (Tables 3, 4, and 5.)Status Register (13h)The status register is a read-only register for determiningvalid bus and session comparator thresholds, ID_IN sta-tus, and HNP success. Tables 6 and 7 show status regis-ter address map, bit configuration, and description.MAX3353EUSB On-the-Go Charge Pump with SwitchablePullup/Pulldown ResistorsFigure 5. Start and Stop ConditionsM A X 3353EUSB On-the-Go Charge Pump with Switchable Pullup/Pulldown ResistorsMAX3353EUSB On-the-Go Charge Pump with SwitchablePullup/Pulldown ResistorsM A X 3353Einterrupt edge, and interrupt latch address maps. Bit configuration is shown in Tables 9, 10, and 11.Manufacturer and ID Register Address MapThe manufacturer and ID registers are read-only regis-ters (Table 12).External CapacitorsFive external capacitors are recommended for proper operation. Bypass V L and V TRM to GND with a 0.1µF ceramic capacitor. Bypass V BUS and V CC to GND with a 1µF low-ESR ceramic capacitor. For the internal charge pump, use a 0.1µF ceramic capacitor between C+ and C-.USB On-the-Go Charge Pump with Switchable Pullup/Pulldown Resistors。