MAX353CPE+中文资料

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MAX471MAX472的中文资料大全

M A X471M A X472的中文资料大全(总4页)-本页仅作为预览文档封面，使用时请删除本页-MAX471/MAX472的特点、功能美国美信公司生产的精密高端电流检测放大器是一个系列化产品，有MAX471/MA X472、 MAX4172/MAX4173等。

它们均有一个电流输出端，可以用一个电阻来简单地实现以地为参考点的电流/电压的转换，并可工作在较宽电压内。

MAX471/MAX472具有如下特点：●具有完美的高端电流检测功能；●内含精密的内部检测电阻（MAX471）；●在工作温度范围内，其精度为2%；●具有双向检测指示，可监控充电和放电状态；●内部检测电阻和检测能力为3A，并联使用时还可扩大检测电流范围；●使用外部检测电阻可任意扩展检测电流范围（MAX472）；●最大电源电流为100μA；●关闭方式时的电流仅为5μA；●电压范围为3～36V；●采用8脚DIP/SO/STO三种封装形式。

MAX471/MAX472的引脚排列如图1所示，图2所示为其内部功能框图。

表1为MAX471/MAX472的引脚功能说明。

MAX471的电流增益比已预设为500μA/A，由于2kΩ的输出电阻（ROUT）可产生1V/A的转换，因此±3A时的满度值为3V.用不同的ROUT电阻可设置不同的满度电压。

但对于MAX471，其输出电压不应大于VRS+。

对于MAX472，则不能大于。

MAX471引脚图如图１所示，MAX472引脚图如图２所示。

MAX471/MAX472的引脚功能说明引脚名称功能MAX471MAX47211SHDN关闭端。

正常运用时连接到地。

当此端接高电平时，电源电流小于5μA2，3-RS+内部电流检测电阻电池（或电源端）。

“+”仅指示与SIGN输出有关的流动方向。

封装时已将2和3连在了一起-2空脚-3RG1增益电阻端。

通过增益设置电阻连接到电流检测电阻的电池端44GND地或电池负端55SIGN集电极开路逻辑输出端。

CommScope HT3540H Series双密度全谱宽带WDM传输系统商品说明书

DATA SHEETHeadend Optics Platform (CH3000)HT3540H SeriesDouble-Density Full Spectrum DWDM Transmitter SystemThe CommScope HT3540H Series Double ‐Density Full Spectrum Dense Wave Division Multiplexing (DWDM) Transmitter System provides high performance and a high rack density forward path transmission solution for Cable TV service providers.The high ‐density packaging design allows up to four (4) HT3540H series high performance transmitters plus a CC3008 Communications Control Module to be stacked vertically and contained by the CA3008 module carrier, requiring only two chassis slots of a 3RU chassis. The compact solution supports up to 24 transmitters in a CH3000 chassis, including redundant power supplies.•Available in 40 wavelengths on ITU 100 GHz grid •Hot plug ‐in/out, individually replaceable transmitter modules•Optimized for full spectrum loading•Analog loading up to 552 MHz plus QAM loading •Manual or Automatic Gain Control (AGC) modes •Low power consumption•High rack density: 24 transmitters per 3RU chassis, with redundant power supplies and optical multiplexing•Front panel ‐20 dB input test point •Front panel laser On/Off switch•Local and remote status monitoring featuresFEATURESWhen installed in the chassis, the transmitters interface to a “zero ‐slot” back plate, providing support for up to four HT3540H series transmitters. The figure below shows a fully loaded carrier mated to the BD35M4 Double ‐Density multiplexing back plate that supports optical combining of four DWDM wavelengths in the forward path.The CC3008 Communications Module installed at the top of a HT3540H series transmitter stack provides the communications interface between the transmitters and the CH3000 mid ‐plane bus, allowing complete configuration and management control of the stack, both local andremote.HT3540H Series Quad ‐Stack and CC3008 Communications Module joined with a BD35M4 Multiplexing Back PlateHT3540H Series Double Density Full Spectrum DWDM Transmitters (1.2 GHz Passband)CommScope HT3540H Series Double‐Density Full Spectrum DWDM Transmitters are a key element of the CommScope HFC and Fiber Deep architectures in support of the evolution to all QAM transmission. These high‐performance transmitters are designed for Dense Wave Division Multiplexing (DWDM) applications for point‐to‐point forward path transmission of full spectrum broadcast and narrowcast services.HT3541H series transmitters are designed for “light” analog channel loading from 0 to 30 analog channels (up to 258 MHz) plus QAM channel loading, or for all QAM loading. They are also designed for QAM‐only loading for digital services as part of a BC/NC overlay system.HT3542H series transmitters are designed for “full” analog channel loading from 0 to 79 analog channels (up to 552 MHz) plus QAM channel loading.HT3543H series transmitters are designed for all QAM loading.These transmitters incorporate advanced dispersion compensation circuitry to enable transmission of high‐quality signals over maximum distances.The above figure shows a front view of the CA3008 carrier components: a single HT354xH Double‐Density Transmitter (left); a single CC3008 Communications Module (right), and a fully loaded “stack” (center) providing four (4) DWDM transmitters, requiring only 2 vertical slots of a CH3000 Chassis. A fully loaded CH3000 chassis supports 24 Double‐Density DWDM transmitters and redundant power supplies.Features•DWDM transmitter: 40 wavelengths on the ITU grid •Manual or Automatic Gain Control (AGC) modes •RF input amplification up to +6 dB•Optimized for full spectrum loading•HT3541H: Analog loading up to 258 MHz plus QAM loading, or all QAM loading.•HT3542H: Analog loading up to 552 MHz, plus QAM loading•HT3543H: All QAM loading •Hot plug‐in/out, individually insertable•Low power consumption•Industry’s highest DWDM rack density: 24 transmitters per 3RU chassis, with redundant power supplies •Front access ‐20 dB input test point•Front panel laser On/Off interlock switch•Local and remote status monitoringHT3540H SERIES SPECIFICATIONSPhysicalDimensions11.5” D x 0.8” H x 2.0” W (29.2 x 2.0 x 5.1 cm)*Weight0.75 lbs. (0.34 kg)* Four (4) transmitter units designed to be vertically stacked, plus a CC3008 Communications Module, and installedinside a CA3008 Module Carrier. The combination occupies two slots in a 3RU CH3000 Chassis.EnvironmentalOperating‐20°to +65°C (‐4°to 149°F)Storage‐40°to +85°C (‐40°to +185°F)Humidity5% to 95% non‐condensingRF and Optical InterfaceRF Input F‐type male located on BD31A4 or BD35M4 Back PlatesInput RF Test Point G‐type male (located at front panel, ‐20 dB)Optical Connector SC/APC located on BD31A4 or BD35M4 Back PlatesPower RequirementsInput Voltage12 V DCPower Consumption10 W (per transmitter) including controller and back plate cooling fanGeneralHot plug‐in/outManual gain alignmentChannel LoadingHT3541H: 0–30 Analog channels (up to 258 MHz), plus QAM channelsHT3542H: 0–79 Analog channels (up to 552 MHz), plus QAM channelsHT3543H: All QAM channelsOpticalOptical Output Power10 ±0.25 dBmWavelength See DWDM ITU Channel Plans descriptionFiber Length HT3541H and HT3543H: 60 km max. (Dispersion Compensation adjustable in 5 km steps)HT3542H: 40 km max. (Dispersion Compensation adjustable in 1 km steps)Compatible with external dispersion compensation for some applicationsElectricalPassband45 to 1218 MHzFrequency Response (Flatness including Slope)•±1.0 dB (BC input @ 25°C)•±0.5 dB (NC input relative to BC input)Nominal RF Input Levels (Input Attenuator = 0 dB)HT3541H:•16.2 dBmV/ch for 30 analog channels into BC input•10.2 dBmV/ch for 256‐QAM channels into BC input, or 16.2 dBmv/ch into NC inputHT3542H:•15 dBmV/ch for 79 analog channels into BC input•9 dBmV/ch for 256‐QAM channels into BC input, or 15 dBmv/ch into NC inputHT3543H:•10.7 dBmV/ch for 154 256‐QAM channels into BC input, or 16.7 dBmV/ch into NC inputRF Input Impedance75 Ω, nomRF Input Return Loss18 dB, minRF Input Attenuator/Amplify Range (Manual Mode)‐6.0 to +5.0 dB Normal mode. High‐gain mode (+5.5, +6.0 dB) supports BC RF input port, NC RF input is terminated. RF Input Attenuator Step Size0.5 dBAGC Mode Maintains RF level to within ±3 dB of the learned RF valueLevel Stability (Typical)±0.5 dB (‐1 worst case relative to 25°C)256‐QAM BER< 10–5(pre‐FEC, ITU‐C)MER> 37 dB to 50°C; > 36 dB to 65°CLink Performance HT3541H HT3542H HT3543HLoading30A + 124 QAM79A + 75 QAM154 QAMLength (km)406030404060CNR* (dB):52505150See MER See MERCSO (dB):61586058‐‐CTB (dB):65656565‐‐* max 1 dB degradation at temperature extremesAn HT3541H transmitter can also be used as a narrowcast transmitter. For example, in BC/NC overlay systems, itwould have the performance of an AT3535G‐xx‐1‐AS transmitter.For more information about BC/NC overlay systemperformance and evolution from low NC 256‐QAM channel loading to full spectrum 256‐QAM channel loading, or forinformation about full spectrum multiwavelength applications with up to 40 DWDM wavelengths, please contact yourCommScope representative.DWDM ITU Channel PlansCommScope supports DWDM network architectures with a variety of products on the standard DWDM ITU Grid (ITU‐T G.694.1). For a more complete description, please refer to the CommScope DWDM ITU Grid Channel Plan datasheet.Plate that multiplexes the output of four HT3540H Double‐Density Full Spectrum Transmitters.This back plate provides connections for a group of four HT3540H Series Transmitters installed in the sameCA3008 Module Carrier, along with the CC3008 Communications Control Module.These 4‐channel mux back plates (for which outputs can be cascaded from one back plate to another) maybe ordered for various channel groups.BD35M4‐AC BACK PLATE SPECIFICATIONSSpecificationPhysicalDimensions7.2” D x 5.2” H x 2.0” W* (18.2 x 13.2 x 5.1 cm)Weight 2.0 lb. (0.91 kg)EnvironmentalOperating‐20°to +65°C (‐4°to 149°F)Storage‐40°to +85°C (‐40°to +185°F)Humidity5% to 95% non‐condensingPower RequirementsInput Voltage12 V DCPower Consumption5 W max (2.5 W Typ), including the replaceable cooling fanOptical InterfaceOptical Connectors SC/APC (2)•DWDM INP (input from previous mux back plate)•DWDM OUT (output to network or next mux back plate)RF Interface8 F‐Type Connectors•4 BC and 4 NC (1 BC/NC pair per transmitter)OpticalChannel Spacing100 GHzChannel Plan See ITU Channel Plans descriptionInsertion Losses, Including Connectors Typ Max•DWDM Input to DWDM Output 1.0 dB 1.2 dB•Ch. yy Input to DWDM Output 1.4 dB 1.6 dBUniformity, Including Connectors•Module Uniformity0.7 dB 1.0 dB•Paired Uniformity0.4 dB0.6 dBReturn Loss, min45 dBDirectivity, min55 dBPassband @ 0.2 dB•Ch. yy Input to DWDM Output±0.125 nm•DWDM Input to DWDM Output Passes 1423.5 through 1617.5 with a notch at the channel add/drop band. WDL for the passband is within ±0.15 dB Ripple Within Passband0.5 dB maxPolarization Dependent Loss, max0.1 dB (typically < 0.05 dB)Power Handling, max (Any Input Port)21.8 dBmThe BD31A4 is a double‐density back plate that provides a choice of 4 separate BC and 4 separate NC RF inputs, or 1 common BC and 4 separate NC RF inputs, for four HT3541H Transmitters.The BD31A4‐100 provides RF input and optical connections to or from the HT3541H transmitters.BD31A4‐100‐H12F‐0‐AS is a double density back plate that provides 4 separate BC inputs and 4 separate NC RF inputs for four HT3541H Transmitters. Also supports four separate optical output SC/APC connectors.BD31A4‐100‐H10F‐0‐AS is a double density back plate that provides 1 common BC input and 4 separate NC RF inputs for four HT3541H Transmitters. Also supports four separate optical output SC/APC connectors.BD31A4‐100‐H12F‐0‐AS Back Plate CA3008 Module CarrierBD31A4‐100 BACK PLATE SPECIFICATIONSSpecificationPhysicalDimensions7.2” D x 5.2” H x 2.0” W* (18.2 x 13.2 x 5.1 cm)Weight 2.0 lb. (0.91 kg)EnvironmentalOperating‐20°to +65°C (‐4°to 149°F)Storage‐40°to +85°C (‐40°to +185°F)Humidity5% to 95% non‐condensingPower RequirementsInput Voltage12 V DCPower Consumption5 W max (2.5 W Typ), including the replaceable cooling fanOpticalThrough 4 SC/APC connectors, the BD31A4‐100 provides optical pass‐through from the HT354xH transmitter. Optical Insertion Loss0.2 dB Typ; 0.4 dB MaxRefer to the HT354xH product specifications for more information.RF InterfaceThe BD31A4‐100 provides RF to the HT354xH transmitter through F‐type RF connectors.•4 BC and 4 NC (BD31A4‐100‐H12F‐0‐AS)•1 BC and 4 NC (BD31A4‐100‐H10F‐0‐AS)H T 354*H –D –***0–2–A SDouble Density, Full Spectrum DWDM Transmitter (1.2 GHz)1 = Type 1, up to 30A + QAM Loading2 = Type 2, up to 79A + QAM Loading3 = Type 3, for all QAM LoadingFor HT3541H and HT3542H = A + ** ITU Channel #For HT3543H = E + ** ITU Channel #**= ITU Channel Number (20 through 62;See CommScope DWDM ITU Grid Channel Plan Data Sheet)Connector Type: SC/APCHT354xH TransmitterBack PlatesB D 31A 4–100–H 1*F –0–A SDouble Density Back plate for 4 HT3xxx Full Spectrum Transmitters with SC/APC Connector 0 = 1 common BC input and 4 NC RF Inputs 2 = 4 BC inputs and 4 NC RF Inputs Connector Type: SC/APCConnector Type: SC/APCB D 35M 4–***–H 02F –*–A SDouble Density Muxing Back plate for 4 HT354x Full Spectrum Transmitters with SC/APC ConnectorHT3541H 40 Wavelength PlanCode Wavelength Group Code Wavelength Group A0J ITU CH 20 ‐23A0P ITU CH 40 ‐43A0K ITU CH 24 ‐27A0R ITU CH 44 ‐47A0L ITU CH 28 ‐31A0S ITU CH 48 ‐51A0M ITU CH 32 ‐35A0T ITU CH 52 ‐55A0NITU CH 36 ‐39A0UITU CH 56 ‐591 = For up to 30A + QAM RF Loading2 = For up to 79A + QAM RF Loading3 = For all QAM RF loadingHT3543H16 Wavelength Plan Code Wavelength Group EEA ITU CH 21, 22, 24, 26EEB ITU CH 28, 33, 36, 39EEC ITU CH 44, 48, 52, 54EEDITU CH 57,60, 61,62HT3541H and HT3542H 16 Wavelength Plan Code Wavelength Group AC1ITU CH 20, 21, 24, 29AC2ITU CH 35, 42, 52, 54AC3ITU CH 23, 33, 44, 47AC4ITU CH 51, 57, 58, 59Contact Customer Care for product information and sales:•United States: 866‐36‐ARRIS •International: +1‐678‐473‐5656RELATED PRODUCTSCH3000 Chassis Optical Patch Cords Optical Transmitters Optical Passives Digital ReturnInstallation ServicesNote: Specifications are subject to change without notice.Copyright Statement:©2022CommScope,Inc.All rights reserved.ARRIS and the ARRIS logo are trademarks of CommScope,Inc.and/or its affiliates.All other trademarks are the property of their respective owners.No part of this content may be reproduced in any form or by any means or used to make any derivative work (such as translation,transformation,or adaptation)without written permission from CommScope,Incand/orits affiliates (“CommScope”).CommScope reserves the right to revise or change this content from time to time without obligation on the part of CommScope to provide notification of such revision or change.System AccessoriesC C 3008Communications Control ModuleC A 3008Module CarrierH T 3F I L DFiller Module for Double ‐Density Slots。

MAXIM命名规则

MAXIM(美信)命名规则MAXIM前缀是“MAX”。

DALLAS则是以“DS”开头。

MAX×××或MAX××××说明：1后缀CSA、CWA 其中C表示普通级，S表示表贴，W表示宽体表贴。

2 后缀CWI表示宽体表贴，EEWI宽体工业级表贴，后缀MJA或883为军级。

3 CPA、BCPI、BCPP、CPP、CCPP、CPE、CPD、ACPA后缀均为普通双列直插。

举例MAX202CPE、CPE普通ECPE普通带抗静电保护MAX202EEPE 工业级抗静电保护（-45℃-85℃）说明 E指抗静电保护MAXIM数字排列分类1字头模拟器 2字头滤波器 3字头多路开关4字头放大器 5字头数模转换器 6字头电压基准7字头电压转换 8字头复位器 9字头比较器DALLAS命名规则例如DS1210N.S. DS1225Y-100INDN=工业级S=表贴宽体 MCG=DIP封Z=表贴宽体 MNG=DIP工业级IND=工业级 QCG=PLCC封 Q=QFP下面是MAXIM的命名规则：三字母后缀：例如：MAX358CPDC = 温度范围P = 封装类型D = 管脚数温度范围：C = 0℃ 至70℃ （商业级）I = -20℃ 至+85℃ （工业级）E = -40℃ 至+85℃ （扩展工业级）A = -40℃ 至+85℃ （航空级）M = -55℃ 至+125℃ （军品级）封装类型：A SSOP(缩小外型封装)B CERQUADC TO-220, TQFP(薄型四方扁平封装)D 陶瓷铜顶封装E 四分之一大的小外型封装F 陶瓷扁平封装H 模块封装, SBGA(超级球式栅格阵列, 5x5 TQFP) 四字母后缀：例如：MAX1480ACPIA = 指标等级或附带功能C = 温度范围P = 封装类型I = 管脚数温度范围：C = 0℃ 至70℃ （商业级）I = -20℃ 至+85℃ （工业级）E = -40℃ 至+85℃ （扩展工业级）A = -40℃ 至+85℃ （航空级）M = -55℃ 至+125℃ （军品级）封装类型：A SSOP(缩小外型封装)B CERQUADC TO-220, TQFP(薄型四方扁平封装)D 陶瓷铜顶封装E 四分之一大的小外型封装F 陶瓷扁平封装H 模块封装, SBGA(超级球式栅格阵列, 5x5 TQFP) J CERDIP (陶瓷双列直插)K TO-3 塑料接脚栅格阵列L LCC (无引线芯片承载封装)M MQFP (公制四方扁平封装)N 窄体塑封双列直插P 塑封双列直插Q PLCC (塑料式引线芯片承载封装)R 窄体陶瓷双列直插封装(300mil)S 小外型封装T TO5,TO-99,TO-100U TSSOP,μMAX,SOTW 宽体小外型封装（300mil）X SC-70（3脚，5脚，6脚）Y 窄体铜顶封装Z TO-92，MQUAD/D 裸片/PR 增强型塑封/W 晶圆管脚数：A: 8B: 10，64C: 12，192D: 14E: 16F: 22，256G: 24H: 44I: 28J: 32K: 5，68L: 40M: 7，48 N: 18O: 42 P: 20Q: 2，100 R: 3，84S: 4，80 T: 6，160U: 60 V: 8（圆形）W: 10（圆形） X: 36Y: 8（圆形） Z: 10（圆形）。

MAX213CAI-T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 .)。

MAXIM MAX335 数据手册

现货库存、技术资料、百科信息、热点资讯，精彩尽在鼎好!For free samples & the latest literature: , or phone 1-800-998-8800_______________General DescriptionThe MAX335 analog switch with serial digital interface offers eight separately controlled single-pole-single-throw (SPST) switches. All switches conduct equally in either direction, and on-resistance (100Ω) is constant over the analog signal range.These CMOS switches can operate continuously with power supplies ranging from ±4.5V to ±20V and handle rail-to-rail analog signals. Upon power-up, all switches are off, and the internal serial and parallel shift registers are reset to zero. The MAX335 is equivalent to two DG211quad switches but controlled by a serial interface.The interface is compatible with the Motorola SPI inter-face standard. Functioning as a shift register, this serial interface allows data (at DIN) to be locked in synchro-nous with the rising edge of clock (SCLK). The shift reg-ister's output (DOUT) enables several MAX335s to be daisy chained.________________________ApplicationsSerial Data Acquisition and Process Control Avionics Signal Routing Networking____________________________Featureso 8 Separately Controlled SPST Switches o SPI-Compatible Serial Interface o Accepts ±15V Analog Swingso Multiple Devices Can Be Daisy Chained______________Ordering InformationMAX335Serial Controlled, 8-Channel SPST Switch________________________________________________________________Maxim Integrated Products1__________________Pin Configuration19-0220; Rev 2; 7/96* Contact factory for dice specifications.** Contact factory for availability and processing to MIL-STD-883.SPI is a trademark of Motorola Corp.________________Functional DiagramM A X 335Serial Controlled, 8-Channel SPST Switch 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V L = +5V ±10%, V+ = 15V, V- = -15V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Voltages Referenced to V-V+........................................................................................44V GND....................................................................................25V V L ..................................................(GND - 0.3V) to (V+ + 0.3V)SCLK,CS , DIN, DOUT, NO_, COM_..............V- -2V to V+ +2Vor 30mA, whichever occurs firstContinuous Current (any terminal)......................................30mA Peak Current, NO or COM(pulsed at 1ms, 10% duty cycle MAX)..........................100mA Continuous Power Dissipation (T A = +70°C) (Note 1)Narrow Plastic DIP (derate 13.33mW/°C above +70°C)..1067mW Wide SO (derate 11.76mW/°C above +70°C)....................941mW Narrow CERDIP (derate 12.50mW/°C above +70°C)......1000mW Operating Temperature RangesMAX335C_ _.......................................................0°C to +70°C MAX335E_ _....................................................-40°C to +85°C MAX335MRG.................................................-55°C to +125°C Storage Temperature Range.............................-65°C to +160°C Lead Temperature (soldering, 10sec).............................+300°CNote 1:All leads are soldered or welded to PC boards.MAX335Serial Controlled, 8-Channel SPST Switch_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)(V L = +5V ±10%, V+ = 15V, V- = -15V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Note 2:When V L falls below this voltage, all switches are set off and the internal shift register is cleared (all zero).Note 3:Guaranteed, not production tested.M A X 335Serial Controlled, 8-Channel SPST Switch 4_______________________________________________________________________________________Note 4:This specification guarantees that data at D OUT never appears before SCLK's falling edge.TIMING CHARACTERISTICS OF SERIAL DIGITAL INTERFACE (Figure 1)(V L = +5V ±10%, V+ = +15V, V- = -15V, T A = T MIN to T MAX , unless otherwise noted.)MAX335Serial Controlled, 8-Channel SPST Switch_______________________________________________________________________________________53000-2020R ON vs. V COM AND POWER-SUPPLY VOLTAGE50250V COM (V)R O N (Ω)10150100-1002003000-2020R ON vs. V COM AND TEMPERATURE50250V COM (V)R O N (Ω)10150100-1002006000020t ON , t OFFvs. V COM100500V COM (V)t O N , t O F F (n s )1530020051040060-60±20DATA-HOLD TIME vs. POWER-SUPPLY VOLTAGE-4040M A X 335-04SUPPLY VOLTAGE (V)D A T A -H O L D T I ME (n s )±150-20±5±1020105-105CHARGE INJECTION vs. V COM-7070V COM (V)Q (p C )200-35-20035-15-10-55101560±20DATA-SETUP TIME vs. POWER SUPPLY1050M A X 335-05SUPPLY VOLTAGE (V)D A T A -SE T U P T I M E (n s )±153020±5±10402000.0002LEAKAGE CURRENT vs.TEMPERATURE0.00220M A X 335-06TEMPERATURE (°C)O N -L E A K A G E (p A )+1250.20.02-55+252ONOFF10000.001SUPPLY vs. TEMPERATURE0.01100M A X 335-08TEMPERATURE (°C)I +, I -, I L (µA )+12510.1-55+2510I+I LI-600MINIMUM SCLK PULSE WIDTHvs. POWER SUPPLY1050M A X 335-09SUPPLY VOLTAGE (V)S C L K (n s )±203020±5±1040±15__________________________________________Typical Operating Characteristics(V+ = +15V, V- = -15V, V L = 5V, T A = +25°C, unless otherwise noted.)______________Detailed DescriptionSerial Digital InterfaceBasic OperationRefer to Figure 2. The MAX335 interface can be thought of as an 8-bit shift register controlled by CS.While CS is low, input data appearing at DIN is clocked into the shift register synchronous with SCLK’s rising edge. The data is an 8-bit word, each bit controlling one of eight switches in the MAX335 (Table 1). DOUT is the output of the shift register, with data appearing syn-chronous with SCLK’s falling edge. Data at DOUT is simply the input data delayed by eight clock cycles. When shifting the input data, D7 is the first bit in and out of the shift register. While shifting data, the switches remain in their original configuration. When the 8 bits of data have been shifted in, CS is brought high. Thisupdates the new switch configuration and inhibits fur-ther data from entering the shift register. Transitions at DIN and SCLK have no effect when CS is high, and DOUT holds the last bit in the shift register.The MAX335 three-wire serial interface is compatible with the SPI™ and Microwire™ standards. If interfacing with a Motorola processor serial interface, set CPOL = 0.The MAX335 is considered a slave device (Figures 2and 3). Upon power-up, the shift register contains all zeros, and all switches are off.The latch that drives the analog switch is only updated on the rising edge of CS when SCLK is low.If SCLK is high when CS rises, the latch will not be updated until SCLK goes low. The CPOL = 1, CPHA = 1SPI configuration does not update the latch correctly.Daisy ChainingFor a simple interface using several MAX335s, “daisy chain” the shift registers as shown in Figure 5. The CS pins of all devices are connected together, and a stream of data is shifted through the MAX335s in series. When CS is brought high, all switches are updated simultaneously. Additional shift registers may be included anywhere in series with the MAX335 data chain.Addressable Serial InterfaceWhen several serial devices are configured as slaves,addressable by the processor, DIN pins of each MAX335 are connected together (Figure 6). Address decode logic individually controls CS of each slave device. When a slave is selected, its CS is brought low,data is shifted in, and CS is brought high to latch the data. Typically, only one slave is addressed at a time.DOUT is not used.Digital FeedthroughDigital feedthrough energy measures 100nV-sec, which means that with no filtering at the signal channel,feedthrough from a sharply rising clock edge into an unfiltered switch channel can be measured at 1Vp-p for 100ns. However, even 100pF capacitance in the switch channel, when combined with the switch resistance,yields a filter that reduces this transient to 10mVp-p typical. To reduce digital feedthrough, hysteresis (150mV typ)was added to the SCLK input so triangle or sine waves may be used.M A X 335Serial Controlled, 8-Channel SPST Switch 6____________________________________________________________________________________________________________Pin DescriptionMAX335Serial Controlled, 8-Channel SPST Switch_______________________________________________________________________________________7Figure 1. Timing DiagramFigure 2. Three-Wire Interface TimingM A X 335Serial Controlled, 8-Channel SPST Switch 8_______________________________________________________________________________________X D6D50X X 1X X 0X X D71X X X X X X X X X 1X X 0X X X X X X X X X X X X X X X D0X X X X X X X X X X X X X D3X X X X X X X X X X X 10D4X X X X 10X X X X X X X D2X X X X X X X X X 10X X Switch 7 open (off)Switch 7 closed (on)Switch 6 open Switch 6 closed Switch 4 closed Switch 4 open Switch 5 closed Switch 5 open Switch 1 open Switch 2 closed Switch 2 open Switch 3 closed Switch 3 open D1X X X X X X X X 0X X X X X X X X X X 1X Switch 1 closed X X X X X X X 0Switch 0 open XXXXXXX1Switch 0 closedTable 1. Serial-Interface Switch ProgrammingX = Don't careFigure 3. Connections for Microwire Figure 4. Connections for SPIDATA BITSFUNCTIONMAX335Serial Controlled, 8-Channel SPST Switch_______________________________________________________________________________________9Figure 5. Daisy-Chained ConnectionFigure 6. Addressable Serial InterfaceM A X 335__________Applications Information8 x 1 MultiplexerTo use the MAX335 as an 8 x 1 multiplexer, tie all drains together (COM0 to COM7); the mux inputs now source each switch (NO0 to NO7). Input a single 0V to +3V pulse at DIN. As this is clocked through the regis-ter by SCLK, each switch will sequence on one at a time.4-2 Differential MultiplexerTo use the MAX335 as a 4-2 differential multiplexer, tie COM0 through COM3 together and COM4 through COM7 together. Differential inputs will be the source inputs as follows: (NO0, NO4), (NO1, NO5), (NO2,NO6), (NO3, NO7). Figure 7 shows the serial input con-trol at DIN required to turn on two switches making a differential multiplexer.CS is held low for four clock pulses; the first pulse is clocked into the fifth switch position as the second pulse is clocked into the first switch position.CS is pulled high to update switches; then CS is pulled low,and SCLK advances pulses to S1 and S5 positions,where CS is pulled high to update, etc.SPDT SwitchesTie COM0 to NO1 so that NO0 and COM1 are now inputs and COM0/NO1 is the common output. SP is common output. Up to four SPDT switches can be made from each MAX335. Multiples of four or more can be made by daisy chaining devices. In Figure 8, DIN is a pulse train. Again,CS is held low to clock in pulses and CS is pulled high to update;CS is held low to shift pulses, then pulled high to update, etc.Reset FunctionPulsing V L below +0.8V initiates the power-up reset function. The switches are set to the off position, and the serial shift register is reset to all zeros.Power-Supply OperationThe MAX335 operates with V = ±4.5V to ±20V and V L = +5V. With V- tied to ground, the part operates with V+ = +10V to +30V.The V Lsupply sets TTL input compatibility at a 1.6V switching threshold. As V L is raised, the switching threshold is raised, so the part is no longer TTL com-patible. The MAX335 also operates with a single power supply: V L = V+ and V- = 0V. With V L tied to V+, the V L supply cannot be used as a reset function.Serial Controlled, 8-Channel SPST Switch 10______________________________________________________________________________________Figure 8. Serial-Input Control for SPDT Switch ___________________Chip TopographyV-DIN GND NO40.156" (3.96mm)0.099" (2.51mm)NO0 COM0COM1 NO2 COM2COM3NO3COM4COM5NO5COM6NO6COM7NO7DOUTV+SCLKCSVLNO1TRANSISTOR COUNT: 387SUBSTRATE CONNECTED TO V+.Figure 7. Differential Multiplexer Input ControlMAX335Serial Controlled, 8-Channel SPST Switch________________________________________________________Package InformationMaxim 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.12__________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600©1996 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.M A X 335Serial Controlled, 8-Channel SPST Switch ___________________________________________Package Information (continued)。

MAX232中文资料,MAX232CPE,MAX232EPE,MAX232ECPE,规格书,MAXIM代理商,datasheet,PDF

深圳市万瑞尔科技有限公司 MAXIM代理商 0755-28269789
19-4323; Rev 15; 13;5V ‫ޥ‬٫Ă‫ۂ‬໼‫ ل‬RS-232 ഝ‫ڑ‬ಹ/ेฏಹ
________________________________ ‫ݣ‬ะ
MAX220–MAX249࿅઼࿯ഝ‫ڑ‬ಹ /ेฏಹǈከཛྷEIA/TIA232EჾࣆV.28/V.24໼ဳेਊහࣜǈᅐದกྐۨ໗‫ ޥ‬±12V ٫ᆚ‫و‬ᄮᅋă
ሦဗಹऔ໎Ӽคࠩ٫֠‫ޥ‬٫࿅༇ǈሦกᅑᅢದّ‫ڱߔࠞޢ‬ ன෷৹ჾट‫ࠞޢ‬ऋဏ‫ ف‬5μW ჾ௠ăMAX225ĂMAX233Ă MAX235 ჾࣆ MAX245/MAX246/MAX247 ԥၖე༶ԩᆐ औǈ༚ऌᅋᅢᄩฺ٫ଁғஎࢵᅘ࿮‫و‬ᄮᅋă
1.0 (0.1) 0.1 — — 1.0 (0.1) — 1.0 (0.1) 1.0 (0.1) 1.0 (0.1) 1.0 (0.1)
1.0 1.0 (0.1) 0.1 0.1 1.0 — — — 1.0 1.0
SHDN & ThreeState No Yes Yes Yes Yes No
No No No No No Yes Yes No No No
_____________________________________________________________________ ၭျӹ
Part Number MAX220 MAX222 MAX223 (MAX213) MAX225 MAX230 (MAX200) MAX231 (MAX201)
MAX232 (MAX202) MAX232A MAX233 (MAX203) MAX233A MAX234 (MAX204) MAX235 (MAX205) MAX236 (MAX206) MAX237 (MAX207) MAX238 (MAX208) MAX239 (MAX209)

MAX3232ECPE中文资料

MAX3222EEPN -40°C to +85°C 18 Plastic DIP —
MAX3232ECAE 0°C to +70°C 16 SSOP
—
MAX3232ECWE 0°C to +70°C 16 Wide SO —
MAX3232ECPE 0°C to +70°C 16 Plastic DIP —
Next-Generation Device Features
♦ For Space-Constrained Applications MAX3228E/MAX3229E: ±15kV ESD-Protected, +2.5V to +5.5V, RS-232 Transceivers in UCSP
*Dice are tested at TA = +25°C, DC parameters only. **EP = Exposed paddle.
Ordering Information continued at end of data sheet.
Pin Configurations, Selector Guide, and Typical Operating Circuits appear at end of data sheet.
MAX3222EETP
20 Thin QFN-40°C to +85°C EP** (5mm x
5mm)
T2055-5
MAX3222EEUP -40°C to +85°C 20 TSSOP
—
MAX3222EEAP -40°C to +85°C 20 SSOP
—
MAX3222EEWN -40°C to +85°C 18 Wide SO —

MAXIM MAX3570 MAX3571 MAX3573 说明书

_________________________________概述MAX3570/MAX3571/MAX3573低成本、宽带、两次变频调谐器芯片设计用于数字电视接收机。

每款芯片集成了所有必需的射频功能模块，其中包括一个集成的高中频滤波器、全集成VCO、中频VGA。

工作频率范围从50MHz 至878MHz，同时提供超过60dB的RF及IF可控增益范围。

MAX3570/MAX3571具有以44MHz为中心的中频频率，而MAX3573具有以36MHz为中心的中频输出。

这三款芯片都包括了可变增益射频前端，噪声系数仅为8dB。

双频合成器产生两个本振(LO)频率，提供优异的相位噪声性能，在10kHz频偏时相位噪声为-86dBc/Hz。

集成的高中频(HI-IF)滤波器有55dBc (典型值)的镜像抑制。

仅需要一个中频SAW滤波器、无源环路滤波器和晶体振荡器即可构建完整的单芯片调谐器。

MAX3570芯片编程和配置由3线串行接口完成，而MAX3571/MAX3573芯片编程和配置由2线串行接口完成。

MAX3570/MAX3571/MAX3573采用48引脚QFN-EP封装，可工作于商业温度范围(0°C 至+70°C)。

_________________________________应用DVB-C数字电视接收机ATSC数字电视接收机有线电视调制解调器DOCSIS/EURO DOCSIS调制解调器ITU J.83数字机顶盒___________________________________特性♦全集成HI-IF滤波器♦全集成VCO，无需外部元器件和走线。

♦8dB低噪声系数♦高线性—大于54dBc, CSO, CTB, X-MOD。

♦业界最小的封装♦优异的相位噪声，可用于256-QAM、8-VSB和COFDM。

MAX3570/MAX3571/MAX3573高中频(HI-IF)单片宽带调谐器________________________________________________________________Maxim Integrated Products1_____________________引脚排列和功能框图______________________________定购信息*EP = 裸露焊盘。

光纤通信实验箱芯片资料

MC10116是一个双通道的驱动器，4、5脚输入相应的2、3脚输出，为一个通道；9、10脚输入相应的6、7脚输出，为第二个通道。

逻辑图MC10116管脚功能图MC10116管脚功能图2、OP07放大器芯片管脚图与逻辑图OP07是一个高性能的低频运算放大器，放大信号的频率低于600KHz，2、3脚输入相应的6脚输出。

典型应用如下图所示。

MC10116管脚分布图MC10116典型应用图75107是一个高性能的、双通道的比较器。

SN75107管脚分布图SN75107的逻辑功能图MAX435是高性能的视频宽带放大器，可单端或双端输入、输出。

2、6脚输入，9、13脚输出。

MAX435管脚分布图MAX435典型应用图5、MAX404放大器芯片管脚图与逻辑图MAX404是一个高性能的低阻抗输出放大器，主要应用于视频输出级放大器。

2、3脚输入，6脚为输出。

MAX435管脚分布图MAX435典型应用图5、HF BR1414T光发送和HFBR2416光接收模块的应用HFBR1414T和HFBR2416T是一对高性能的数据光纤通信传输模块，采用多模光纤传输。

MAX435典型应用图HFBR1414T管脚分布图（底视图）1、NC（空）2、Signal（信号输入）3、VEE（接地或负电源）4、NC（空）5、NC（空）6、VCC（正电源）7、VEE（接地或负电源）8、NC（空）6、光收发一体模块的应用主要应用于高速的数据传输，采用单模光纤，传输距离长。

HFBR2416T 管脚分布图（底视图）1、 NC （空）2、 VCC （正电源）3、 COMMON （接地或负电源）4、 NC （空）5、 NC （空）6、 Data （信号输出）7、 COMMON （接地或负电源） 8、 NC （空） MAX435管脚分布图1、接收信号地2、接收数据输出（同相）3、接收数据输出（反相）4、收到信号有无检测输出5、接收侧正电源6、发送侧正电源7、发送数据（反相）8、发送数据（同相）9、发送信号地MAX435典型应用图7、75452的管脚功能与典型应用75452是电流驱动器，可直接用作数字光发送机的驱动电路。

CPE-1000-BGN用户手册_V1.0-20130701

服务 ........................................................................................................................... 40 2.5.1. WNMS ............................................................................................................... 40 2.5.2. 系统警报 ............................................................................................................ 40 2.5.3. SNMP Trap 设置 ................................................................................................ 42 2.5.4. SMTP 设置 ........................................................................................................ 42 2.5.5. SNMP ................................................................................................................. 43 2.5.6. 时钟/NTP ........................................................................................................... 43 2.5.7. SSH .................................................................................................................... 44 2.5.8. HTTP .................................................................................................................. 44

采购行业中英文专业术语

1custom made需指定制造的产品2first priority最高的优先级别3PPR( Premium price request)高于标准价格采购请求4RFQ(request for quote)报价请求，询盘quote：报价5ESI(Early supplier involvement)供应商早期介入6cost modeling成本模型7STD price标准价格8Stock-out cost缺货成本包括停工损失，拖欠发货损失，丧失销售机会损失，商誉损失。

9awarded supplier指定供应商10escalate to higher level提交上级处理escalate:逐步上升，升级11cut hard order手动下订单12customer demand pull-in客户需求提前或增加13DistributorManufacturingBroker分销商；厂商；经纪商。

（紧急情况下启用，价格较高。

）14EAU (Estimated annual usage)预估每年需求量15line down停产16APQP(advanced productquality planning)产品质量先期策划与控制计划是QS9000/TS16949质量管理体系的一部分。

17PPAP(production partapproval process)生产件批准程序，是指第一次生产样件时向客户提交一系列文件记录清单，如样品检测报告，FMEA,工艺流程图，控制计划，图纸等等，要提交的资料根据客户要求进行，提交后客户将确认OK后方可进行试生产阶段。

18EOQ(economic orderingquantity)经济订购数量,EOQ= (A:单位时间净需求 S:每次订购费用 U:商品单位成本 C:储存成本)19EDI(electronic datainterchange)电子数据交换。

20R&D (research and design)研发21APS (automated purchasingsystem)自动采购系统22CAD (computer automateddesign)计算机辅助设计23ERP (enterprise resourceplanning)企业资源计划24ANX (automotive networkexchange)自动网络交换25CPO (chief procurementofficers)采购总监26TCA (total cost of acquisition)总获取成本或 TCO Ownership27CPE (collaborative planningand execution)合作计划和执行28CPFR(collaborative,planning,forecasting,replenishment)合作，计划，预测，补充29SCM (supply chainmanagement)供应链管理30VMI (vendor managedinventory)卖方管理库存31VMR (vendor managedreplenishment)卖方管理补货32SCOR (supply chain operationsreference)供应链管理指南33LEW (least ex works)最小离岸价34MOM (markup over coatmodel)成本变动353PL (third party logistics)第三方后勤服务36MRP (material requirementsplanning)物料需求计划37CIO (computer informationofficers)信息主管38PDCA (plan-do-check actioncycle)计划-实施-检查循环39Inventory analysis-Createphysical inventory document分析库存-库存盘点40Create purchase requisition做采购申请41Approve purchase requisition批准采购申请42Create purchase order做采购订单43Create source list, enquire-quotation-choose supplier创建货源清单，询价-报价-确认供应商44Create contract做合同45Goods receipt-goodsinspection-goods issue收货-验货-发货46Push supplier`s invoice, invoiceverify催发票，校验发票47Arrange payment付款48CIF （cost,insurance&freight)成本、保险加运费价货价的构成因素中包括从装运港至约定目的地港的通常运费和约定的保险费，故卖方除具有与CFR术语的相同的义务外，还要为买方办理货运保险，支付保险费，按一般国际贸易惯例，卖方投保的保险金额应按CIF价加成10%。

MAX13235EEUP+中文资料

General DescriptionThe MAX13234E–MAX13237E are +3V to +5.5V pow-ered EIA/TIA-232 and V.28/V.24 communications inter-faces with high data-rate capabilities (up to 3Mbps), a flexible logic voltage interface, and enhanced electro-static discharge (ESD) protection. All receiver inputs and transmitter outputs are protected to ±15kV IEC 61000–4-2 Air Gap Discharge, ±8kV IEC 61000-4-2Contact Discharge, and ±15kV Human Body Model.The MAX13234E/MAX13235E have two receivers and two transmitters, while the MAX13236E/MAX13237E have a single receiver and transmitter. The transmitters have a low-dropout transmitter output stage, delivering true RS-232 performance from a +3V to +5.5V supply based on a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply.All devices achieve a 1µA supply current using Maxim’s AutoShutdown Plus™ feature. These devices automati-cally enter a low-power shutdown mode when the RS-232 cable is disconnected or the devices driving the transmitter and receiver inputs are inactive for more than 30s.The MAX13234E–MAX13237E are available in space-saving TQFN and TSSOP packages and operate over the -40°C to +85°C extended temperature range.ApplicationsFeatures♦Data Rate Up to 3Mbps ♦Low-Voltage Logic Interface ♦+3V to +5.5V Supply Voltage ♦AutoShutdown Plus ♦1µA Shutdown CurrentMAX13234E–MAX13237E3Mbps RS-232 Transceivers withLow-Voltage Interface________________________________________________________________Maxim Integrated Products 119-4343; Rev 0; 10/08For pricing, delivery, and ordering information,please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at .Telematics GPS Systems Industrial Systems Portable DevicesWireless Modules POS SystemsCommunication Systems Data CablesAutoShutdown Plus is a registered trademark of Maxim Integrated Products, Inc.Functional DiagramsM A X 13234E –M A X 13237E3Mbps RS-232 Transceivers with Low-Voltage Interface 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +3V to +5.5V, V L = +1.62V to V CC , T A = -40°C to +85°C, C1–C4 = 0.1µF, V CC = V L , tested at 3.3V ±10%. Typical values areStresses 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.Note 1:Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to /thermal-tutorial .(All voltages referenced to GND.)V CC ......................................................................-0.3V to +6.0V V L .........................................................................-0.3V to +6.0V V+ ........................................................................-0.3V to +7.0V V- .........................................................................+0.3V to -7.0V (V+) + |(V-)| .....................................................................+13.0V T_IN, FORCEOFF , FORCEON .....................-0.3V to (V L + 0.3V)R_IN ...................................................................................±25V T_OUT..............................................................................±13.2V R_OUT, READY ...........................................-0.3V to (V L + 0.3V)Short-Circuit DurationT_OUT to GND .........................................................Continuous Continuous Power Dissipation (T A = +70°C)16-Pin TQFN (derate 20.8mW/°C above +70°C) .....1666mW 20-Pn TSSOP (derate 10.9mW/°C above +70°C) ......879mW 20-Pin TQFN (derate 21.3mW/°C above +70°C) .....1702mWJunction-to-Case Thermal Resistance (θJC ) (Note 1)16-Pin TQFN .................................................................2°C/W 20-Pin TSSOP .............................................................20°C/W 20-Pin TQFN .................................................................2°C/W Junction-to-Ambient Thermal Resistance (θJA ) (Note 1)16-Pin TQFN ...............................................................30°C/W 20-Pin TSSOP .............................................................73°C/W 20-Pin TQFN ...............................................................29°C/W Operating Temperature RangeMAX1323x Operating Temperature Range....-40°C to +85°C MAX1323x Operating Temperature Range..-40°C to +105°C Storage Temperature Range ...........................-65°C to +160°C Lead Temperature (soldering, 10s) .................................+300ºCMAX13234E–MAX13237E3Mbps RS-232 Transceivers withLow-Voltage Interface_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)M A X 13234E –M A X 13237E3Mbps RS-232 Transceivers with Low-Voltage Interface 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS (continued)Note 4:Transmitter skew is measured at the transmitter zero cross points.MAX13234E–MAX13237E3Mbps RS-232 Transceivers withLow-Voltage Interface_______________________________________________________________________________________5Test Circuits/Timing DiagramFigure 1. AutoShutdown Plus, and READY Timing DiagramM A X 13234E –M A X 13237E3Mbps RS-232 Transceivers with Low-Voltage Interface 6_______________________________________________________________________________________Test Circuits/Timing Diagram (continued)Figure 5. Transmitter Propagation DelayFigure 4. Transmitter Test CircuitFigure 3. Receiver Propagation DelayMAX13234E–MAX13237E3Mbps RS-232 Transceivers withLow-Voltage Interface_______________________________________________________________________________________7Typical Operating Characteristics(V CC = V L = 3.3V, T A = +25°C, unless otherwise noted.)TRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)O U T P U T V O L T A G E (V )500200010001500-4-20246-62500TRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)O U T P U T V O L T A G E (V )100250150200-4-20246-650300SLEW RATE vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S L E W R A T E (V /μs )50020001000150067810591112402500SLEW RATE vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S L E W R A T E (V /μs )100250150200505560704565754050300V CC SUPPLY CURRENT vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )50020001000150010152552030002500V CC SUPPLY CURRENT vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )10025015020015203035102540550300TRANSMITTER SKEW vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)T R A N S M I T T E R S K E W (n s )5002000100015003050901101301070150-102500TRANSMITTER SKEW vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)T R A N S M I T T E R S K E W (n s )150200100346782159050250READY TURN-ON TIME vs. TEMPERATUREM A X 13234E t o c 09TEMPERATURE (°C)R E A D Y T U R N -O N T I M E (μs )-15601035506070809010040-4085M A X 13234E –M A X 13237E3Mbps RS-232 Transceivers with Low-Voltage Interface 8_______________________________________________________________________________________READY TURN-OFF TIME vs. TEMPERATUREM A X 13234E t o c 10TEMPERATURE (°C)R E A D Y T U R N -O F F T I M E (μs )-156010350.60.81.01.61.80.20.41.21.42.00-4085SUPPLY CURRENT vs. DATA RATEDATA RATE (kbps)S U P P L Y C U R R E N T (m A )0.110.01101525305203500.00110LOGIC-INPUT THRESHOLD vs. V LV L (V)L O G I C -I N P U T T H R E S H O L D (V )3.54.52.51.51.72.12.31.30.91.10.71.92.50.51.5 5.5TRANSMITTER OUTPUT VOLTAGEvs. SUPPLY VOLTAGESUPPLY COLTAGE (V)O U T P U T V O L T A G E (V )3.54.54.05.0-4-2246-608-83.05.5TRANSMITTER OUTPUT VOLTAGEvs. LOAD CURRENTLOAD CURRENT (mA)O U T P U T V O L T A G E (V )264-4-2246-608-808Typical Operating Characteristics (continued)(V CC = V L = 3.3V, T A = +25°C, unless otherwise noted.)MAX13234E–MAX13237E3Mbps RS-232 Transceivers withLow-Voltage Interface_______________________________________________________________________________________9M A X 13234E –M A X 13237E3Mbps RS-232 Transceivers with Low-Voltage Interface 10______________________________________________________________________________________Detailed DescriptionVL Logic Supply InputThe MAX13234E–MAX13237E feature a separate logic supply input (V L ) that sets the receiver’s output level (V OH ), and sets the transmitter’s input thresholds (V IL ,V IH ). This feature allows flexibility in interfacing to UARTs or communication controllers that have different logic levels. Connect this input to the host logic supply (1.62V ≤V L ≤V CC ).Dual Charge-Pump Voltage ConverterThe internal power supply consists of a regulated dual charge pump that provides output voltages of +5.5V and -5.5V (inverting charge pump), over the +3.0V to +5.5V range. The charge pump operates in discontinu-ous mode: if the output voltages are less than +5.5V,the charge pump is enabled; if the output voltages exceed +5.5V, the charge-pump is disabled. The charge pumps require flying capacitors (C1, C2) and reservoir capacitors (C3, C4) to generate the V+ and V-supplies. The READY output is low when the charge pumps are disabled in shutdown mode. The READY signal asserts high when V- goes below -4V.RS-232 TransmittersThe transmitters are inverting level translators that con-vert CMOS-logic levels to ±5.0V EIA/TIA-232 levels.The MAX13234E/MAX13236E guarantee a 250kbps data rate with worst-case loads of 3k Ωin parallel with 1000pF. The MAX13235E/MAX13237E guarantee a 1Mbps data rate with worst-case loads of 3k Ωin paral-lel with 250pF, and a 3Mbps data rate with worst-case loads of 3k Ωin parallel with 150pF. Transmitters can be paralleled to drive multiple receivers. When FORCEOFF is driven to ground or when the AutoShutdown Plus cir-cuitry senses that all receiver and transmitter inputs are inactive for more than 30s, the transmitters are disabled and the outputs go into a high-impedance state. When powered off or shut down, the outputs can be driven to ±12V. The transmitter inputs do not have pullup resis-tors. Connect unused inputs to GND or V L .RS-232 ReceiversThe receivers convert RS-232 signals to CMOS-logic output levels. The MAX13234E–MAX13237E have inverting outputs that are active when in shutdown (FORCEOFF = GND) (Table 1).AutoShutdown Plus ModeDrive FORCEOFF high and FORCEON low to invoke AutoShutdown Plus mode. When these devices do not sense a valid signal transition on any receiver and transmitter input for 30s, the onboard charge pumps are shut down, reducing supply current to 1µA. This occurs if the RS-232 cable is disconnected or if the devices driving the transmitter and receiver inputs are inactive for more than 30s. The MAX13234E–MAX13237E turn on again when a valid transition is applied to any RS-232 receiver or transmit-ter input. As a result, the system saves power without requiring any control.Figure 6 and Table 1 summarize the MAX13234E–MAX13237E operating modes. The FORCEON and FORCEOFF inputs override AutoShutdown Plus circuit-ry. When neither control is asserted, the IC selects between these states automatically based on the last receiver or transmitter input edge received.Hardware-Controlled ShutdownDrive FORCEOFF low to place the MAX13234E–MAX13237E into shutdown mode.Figure 7. AutoShutdown Plus Initial Turn-On to Wake Up a Mouse or Another SystemMAX13234E–MAX13237E3Mbps RS-232 Transceivers withLow-Voltage Interface______________________________________________________________________________________11Figure 6. AutoShutdown Plus and Shutdown LogicM A X 13234E –M A X 13237E3Mbps RS-232 Transceivers with Low-Voltage Interface 12______________________________________________________________________________________Figure 8a. Human Body ESD Test ModelFigure 8b. Human Body Current WaveformFigure 9a. IEC61000-4-2 ESD Test ModelFigure 9b. IEC61000-4-2 ESD Generator Current Waveform±15kV ESD ProtectionESD-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 MAX13234E–MAX13237E have extra protection against static electricity. Maxim’s engi-neers have developed state-of-the-art structures to pro-tect these pins against ESD of ±15kV without damage.The ESD structures withstand high ESD in all states:normal operation, shutdown, and powered down. Afteran ESD event, Maxim’s E versions keep working without latchup. ESD protection can be tested in various ways;the transmitter outputs and receiver inputs of this prod-uct family are characterized for protection to the follow-ing limits:1)±15V Using the Human Body Model2)±15kV Using IEC 61000-4-2 Air-Gap Method3)±8kV Using IEC 61000-4-2 Contact-DischargeMethodESD 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 8a shows the Human Body Model and Figure 8b 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 1.5k Ωresistor.IEC 61000-4-2The IEC 61000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifi-cally refer to integrated circuits. The MAX13234E–MAX13237E helps design equipment that meets Level 4 (the highest level) of IEC 61000-4-2, without the need for additional ESD-protection components. The major difference between tests done using the Human Body Model and IEC 61000-4-2 is higher peak current in IEC 61000-4-2, because series resistance is lower in the IEC 61000-4-2 model. H ence, the ESD withstand volt-age measured to IEC 61000-4-2 is generally lower than that measured using the Human Body Model. Figure 9a shows the IEC 61000-4-2 model and Figure 9b shows the current waveform for the 8kV, IEC 61000-4-2, Level 4, ESD Contact-Discharge Method.The Air-Gap Method involves approaching the device with a charged probe. The Contact-Discharge Method connects the probe to the device before the probe is energized.Applications InformationCapacitor SelectionThe capacitor type used for C1–C4 is not critical for proper operation; polarized or non-polarized capacitors can be used. The charge pump requires 0.1µF capaci-tors for V CC = +3.3V operation. For other supply volt-ages, see Table 2 for required capacitor values. Do not use values 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 C1 without also increasing the values of C2, C3, C4, C BYPASS1, and C BYPASS2to maintain the proper ratios (C1 to the other capacitors). When using the minimum required capacitor values, make sure the capacitor value does not degrade excessively with temperature. If in doubt, use capacitors with alarger nominal value. The capacitor’s equivalent series resistance (ESR), usually rises at low temperatures influencing the amount of ripple on V+ and V-.In most circumstances, a 0.1µF V CC bypass capacitor and a 1µF V L bypass capacitor are adequate. In appli-cations that are sensitive to power-supply noise, use capacitors of the same value as charge-pump capaci-tor C1. Connect bypass capacitors as close to the IC as possible.Transmitter Outputs when ExitingShutdownFigure 10 shows two transmitter outputs when exiting shutdown mode. As they become active, the two trans-mitter outputs are shown going to opposite RS-232 lev-els (one transmitter input is high, the other is low). Each transmitter is loaded with 3k Ωin parallel with 1000pF.The transmitter outputs display no ringing or undesir-able transients as they come out of shutdown. Note that the transmitters are enabled only when the magnitude of V- exceeds approximately -3V.MAX13234E–MAX13237E3Mbps RS-232 Transceivers withLow-Voltage Interface______________________________________________________________________________________13Table 2. Required Minimum Capacitance 5μs/divV CC = 3.3V C1–C4 = 0.1μFFigure 10. Transmitter Outputs when Exiting Shutdown or Powering UpM A X 13234E –M A X 13237E3Mbps RS-232 Transceivers with Low-Voltage Interface 14______________________________________________________________________________________2μs/div3V/div5V/div5V/divV CC = 3.3VFigure 12. Loopback Test Results at 120kbps100ns/divV CC = 3.3VFigure 13. Loopback Test Results at 3MbpsFigure 11. Loopback Test CircuitChip InformationPROCESS: BiCMOSHigh Data RatesThe MAX13234E–MAX13237E maintain the RS-232 ±5V minimum transmitter output voltage even at high data rates. Figure 11 shows a transmitter loopback test cir-cuit. Figure 12 shows a loopback test result at 120kbps, and Figure 13 shows the same test at 3Mbps.In Figure 12, all transmitters were driven simultaneously at 120kbps into RS-232 loads in parallel with 1000pF.In Figure 13, a single transmitter was driven at 3Mbps,and all transmitters were loaded with an RS-232 receiv-er in parallel with 150pF.MAX13234E–MAX13237E3Mbps RS-232 Transceivers withLow-Voltage InterfacePin ConfigurationsFunctional Diagrams (continued)M A X 13234E –M A X 13237E3Mbps RS-232 Transceivers with Low-Voltage Interface 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©2008 Maxim Integrated Productsis a registered trademark of Maxim Integrated Products, Inc.PACKAGE TYPEPACKAGE CODEDOCUMENT NO.20 TSSOP U20-221-006620 TQFN-EP*T2055-521-014016 TQFN-EP*T1655-221-0140Package InformationFor the latest package outline information and land patterns, go to /packages .*EP = Exposed Pad.。

RMX-353-0512中文资料

76Condor D.C. Power Supplies, Inc., 2311 Statham Parkway , Oxnard, CA 93033800-235-5929 • 805-486-4565 • FAX 805-487-8911 • RMX-350, Multiple OutputPower Factor Correction, Hot SwapSPECIFICATIONS:INPUTAc Input: 90-264 Vac continuous range, 47 to 63 Hz. Internally fused for 7A.Power Factor: 0.99 typical at full load. Meets EN61000-3-2 Class A.Inrush: Cold start ac current is less than 30 A at 115 Vac and 60 A at 230 Vac. Limited by thermistor.Brownout Protection: Holds regulation to 85 Vac.Holdup Time: 20 ms minimum after removal of power at full load.Efficiency: 70% typical.Ac Power Fail: Provides TTL “0” 5 ms before output voltage goes out of regulation band upon loss of ac power.OUTPUTAdjustability: Outputs #1 and 2, and 4 factory adjusted to nominal ±0.2%. Output #3 tracks #2; initial accuracy ±3%.Line & Load Reg: Outputs #1, 2, and 4 hold ±2% over ac input range and 0 to 100% load change (preprogrammed slope).Output #3 requires 20% minimum load on outputs #2 and 3 to hold ±5%.Ripple & Noise: 1% p-p or 100 mV, whichever is greater.Remote Sense (Output #1): Compensates for 250 mV total line drop. Preprogrammed slope remains under ±3 worst case. Open sense lead protection.Temperature Coefficient (Outputs #1, 2, and 4): 0.03% per degree C.Stability: 0.1% over 8 hours after 30 minutes warm-up.Transient Response (Outputs #1, 2, and 4): Output voltage returns to within 1% in less than 500 µs for a 50% load change (measured with rise time and fall time of 200µs). Peak transient does not exceed 5%.Overload Protection: All outputs are protected against over load and short circuit. Automatic recovery upon removal of fault.Overvoltage Protection (Outputs #1 and 2): Protects load against power supply induced over voltage. Trip point is factory set so that output voltage cannot exceed 136% of nominal.Peak Output Current: Dual current ratings define continuous and peak currents. The peak current shown can be delivered for a maximum period of 30 seconds.Remote Enable: Contact closure to common turns on DC outputs (recessed pin for “make last, break first ” connection).Remote Inhibit: Contact closure to the negative sense line or a TTL level “0” turns off dc outputs.DC Power Good: Provides a TTL “1” open collector when output #1 is above 4.6 V nominal.Redundancy: Built-in OR-ing diodes, slope program current sharing on all outputs, and self aligning connector provide “hot swap ” and “N+1” capabilities. Current sharing remains within 10%of the unit ’s full output rating while units are in thermal equilibrium.Reverse Voltage: Protected against reverse voltage up to supply current rating.ENVIRONMENTALThermal Protection: Shuts down power supply if overheated.Automatic recovery.Temperature Range: 0° to 50°C at full ratings.Safety Agencies: Most models are approved to UL1950; CSA 22.2 #234; IEC 950 and T ÜV EN60950, Class 1 SEL V., CE 72/23/EEC/93/68EEC (low voltage directive).Conducted RFI: Meets FCC Part 15, Class A; EN55022 Class B.Output Isolation: Isolated from ground 50 Vdc.Cooling: Self-cooled by internal ball-bearing fan.OPTIONS:Consult factory for available options.FEATURES:•Diode isolated outputs for hot swap•“Zero wire ” slope program current sharing for redundancy •Self-aligning connector with solid metal machined contacts •Universal ac input•0.99 typical power factor•Dual converter design eliminates interaction between logic and auxiliary outputs•Low ripple and noise on all outputs•Dc power good and ac power fail signals •T rue remote inhibit•Monotonic turn-on and turn-off77Condor D.C. Power Supplies, Inc., 2311 Statham Parkway , Oxnard, CA 93033800-235-5929 • 805-486-4565 • FAX 805-487-8911 • RMX-350, Multiple OutputRMX-350 MECHANICAL SPECIFICATIONS:Maximum power form outputs #2, #3 and #4 to be less than 170WA. Output #3 requires 20% minimum load on outputs #2 and 3 to hold ±5%.Dimensions:InchesMillimetersl e d o M l a i c r e m m o C t u O r e w o P .o N t u p t u O t u p t u O t n e r r u C no i t a l u g e R l a t o T se t o N 5021-453X M R 0531V 5+A 052±2V 21+k p A 21/82±3V 21-A 45±A 4V 2.5A 52±2121-453X M R 0531V 5+A 052±2V 21+k p A 21/82±3V 21-A 45±A 4V 21A 52±4221-453X M R 0531V 5+A 052±2V 21+k p A 21/82±3V 21-A 45±A 4V42A32±。

MAX333AEWP中文资料

________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: , or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
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Precision, Quad, SPDT, CMOS Analog Switch MAX333A
ABSOLUTE MAXIMUM RATINGS
V+ to V- ..................................................................................44V VIN, VCOM, VNO, VNC ......................................................V- to V+ (VNO - VNC) ............................................................................32V V+ to Ground..........................................................................30V V- to Ground..........................................................................-30V Current, Any Terminal Except VCOM, VNO, or VNC .............30mA Continuous Current, VCOM, VNO, or VNC ............................20mA Peak Current, VCOM, VNO, or VNC (Pulsed at 1ms, 10% duty cycle max) ............................70mA ESD ....................................................................................2000V Note 1: Device mounted with all leads soldered to PC board. Continuous Power Dissipation (TA = +70°C) (Note 1) Plastic DIP (derate above +70°C by 11.11mW/°C) .....889mW SO (derate above +70°C by 10.00mW/°C) ..................800mW CERDIP (derate above +70°C by 11.11mW/°C) ..........889mW TSSOP (derate above +70°C by 7mW/°C) ..................559mW Operating Temperature Ranges: MAX333AC_ _ .....................................................0°C to +70°C MAX333AE_ _ ..................................................-40°C to +85°C MAX333AMJP ................................................-55°C to +125°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10sec) .............................+300°C

MEMORY存储芯片MAX202ECPE中文规格书

Integrated | 2Absolute Maximum RatingsV CC ..........................................................................-0.3V to +6VV+................................................................(V CC - 0.3V) to +14VV-............................................................................-14V to +0.3VInput VoltagesT_IN............................................................-0.3V to (V+ + 0.3V)R_IN...................................................................................±30VOutput VoltagesT_OUT.................................................(V- - 0.3V) to (V+ + 0.3V)R_OUT......................................................-0.3V to (V CC + 0.3V)Short-Circuit Duration, T_OUT....................................ContinuousContinuous Power Dissipation (T A = +70°C)16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW16-Pin Narrow SO (derate 8.70mW/°C above +70°C).....696mW16-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW16-Pin TSSOP (derate 9.4mW/°C above +70°C)...........755mW 20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)...889mW 20-Pin SO (derate 10.00mW/°C above +70°C).............800mW 24-Pin Narrow Plastic DIP (derate 13.33mW/°C above +70°C) ...............................1.07W 24-Pin Wide Plastic DIP (derate 14.29mW/°C above +70°C)................................1.14W 24-Pin SO (derate 11.76mW/°C above +70°C).............941mW 24-Pin SSOP (derate 8.00mW/°C above +70°C)..........640mW 28-Pin SO (derate 12.50mW/°C above +70°C)....................1W 28-Pin SSOP (derate 9.52mW/°C above +70°C)..........762mW Operating Temperature Ranges MAX2_ _EC_ _.....................................................0°C to +70°C MAX2_ _EE_ _...................................................-40°C to +85°C Storage Temperature Range.............................-65°C to +165°C Lead Temperature (soldering, 10s).................................+300°C Electrical Characteristics(V CC = +5V ±10% for MAX202E/206E/208E/211E/213E/232E/241E; V CC = +5V ±5% for MAX203E/205E/207E; C1–C4 = 0.1µF for MAX202E/206E/207E/208E/211E/213E; C1–C4 = 1µF for MAX232E/241E; T A = T MIN to T MAX ; unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.找MEMORY 、二三极管上美光存储Integrated | 12MAX202E–MAX213E,MAX232E/MAX241E±15kV ESD-Protected, 5V RS-232 Transceivers Model. F igure 7b shows the current waveform for the 8kV IEC1000-4-2 level-four ESD contact-discharge test.The air-gap test involves approaching the device with a charged probe. The contact-discharge method con-nects the probe to the device before the probe is ener-gized.Machine Model The 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 RS-232 inputs andFigure 7a. IEC1000-4-2 ESD Test Modelest, which is then discharged into the test device through a 1.5k Ω resistor.IEC1000-4-2The IEC1000-4-2 standard covers ESD testing and per-formance of finished equipment; it does not specifically refer to integrated circuits. The MAX202E/MAX203E–MAX213E, MAX232E/MAX241E help you design equipment that meets level 4 (the high-est level) of IEC1000-4-2, without the need for addition-al ESD-protection components.The major difference between tests done using the Human Body Model and IEC1000-4-2 is higher peak current in IEC1000-4-2, because series resistance is lower in the IEC1000-4-2 model. Hence, the ESD with-stand voltage measured to IEC1000-4-2 is generallylower than that measured using the Human BodyFigure 7b. IEC1000-4-2 ESD Generator Current Waveform Figure 6a. Human Body ESD Test ModelFigure 6b. Human Body Model Current Waveform。

器件标准封装

1、 MAXIM 更多资料请参考 MAXIM 前缀是“MAX”。DALLAS 则是以“DS”开头。 MAX×××或 MAX×××× 说明： 1、后缀 CSA、CWA 其中 C 表示普通级，S 表示表贴，W 表示宽体表贴。 2、后缀 CWI 表示宽体表贴，EEWI 宽体工业级表贴，后缀 MJA 或 883 为军级。 3、CPA、BCPI、BCPP、CPP、CCPP、CPE、CPD、ACPA 后缀均为普通双列直插。举例 MAX202CPE、CPE 普通 ECPE 普通带抗静电保护 MAX202EEPE 工业级抗静电保护（-45℃-85℃）,说明 E 指抗静电保护 MAXIM 数字排列分类 1 字头模拟器 2 字头滤波器 3 字头多路开关 4 字头放大器 5 字头数模转换器 6 字头电压基准 7 字头电压转换 8 字头复位器 9 字头比较器 DALLAS 命名规则例如 DS1210N.S. DS1225Y-100IND N=工业级 S=表贴宽体 MCG=DIP 封 Z=表贴宽体 MNG=DIP 工业级 IND=工业级 QCG=PLCC 封 Q=QFP 2、 ADI 更多资料查看 AD 产品以“AD”、 “ADV”居多，也有“OP”或者“REF”、 “AMP”、 “SMP”、 “SSM”、 “TMP”、 “TMS”等开头的。后缀的说明： 1、后缀中 J 表示民品（0-70℃），N 表示普通塑封，后缀中带 R 表示表示表贴。 2、后缀中带 D 或 Q 的表示陶封，工业级（45℃-85℃）。后缀中 H 表示圆帽。 3、后缀中 SD 或 883 属军品。例如：JN DIP 封装 JR 表贴 JD DIP 陶封 3、 BB 更多资料查看 BB 产品命名规则：前缀 ADS 模拟器件后缀 U 表贴 P 是 DIP 封装带 B 表示工业级前缀 INA、XTR、 PGA 等表示高精度运放后缀 U 表贴 P 代表 DIP PA 表示高精度 4、 INTEL 更多资料查看 INTEL 产品命名规则： <3> N80C196 系列都是单片机前缀：N=PLCC 封装 T=工业级 S=TQFP 封装 P=DIP 封装 KC20 主频 KB 主频 MC 代表 84 引角举例：TE28F640J3A-120 闪存 TE=TSOP DA=SSOP E=TSOP 5、 ISSI 更多资料查看以“IS”开头比如：IS61C IS61LV 4×表示 DRAM 6×表示 SRAM 9×表示 EEPROM 封装： PL=PLCC PQ=PQFP T=TSOP TQ=TQFP 6、 LINEAR 更多资料查看以产品名称为前缀 LTC1051CS CS 表示表贴 LTC1051CN8 **表示*IP 封装 8 脚

MAX306中文资料

_______________General DescriptionThe MAX306/MAX307 precision, monolithic, CMOS analog multiplexers (muxes) offer low on-resistance (less than 100Ω), which is matched to within 5Ωbetween channels and remains flat over the specified analog signal range (7Ωmax). They also offer low leak-age over temperature (I NO(OFF)less than 2.5nA at +85°C) and fast switching speeds (t TRANS less than 250ns). The MAX306 is a single-ended 1-of-16 device,and the MAX307 is a differential 2-of-8 device.The MAX306/MAX307 are fabricated with Maxim’s improved 44V silicon-gate process. Design improve-ments yield extremely low charge injection (less than 10pC) and guarantee electrostatic discharge (ESD)protection greater than 2000V.These muxes operate with a single +4.5V to +30V sup-ply, or bipolar ±4.5V to ±20V supplies, while retaining TTL/CMOS-logic input compatibility and fast switching.CMOS inputs provide reduced input loading. These improved parts are plug-in upgrades for the industry-standard DG406, DG407, DG506A, and DG507A.________________________ApplicationsSample-and-Hold Circuits Test Equipment Heads-Up DisplaysGuidance and Control Systems Military RadiosCommunications Systems Battery-Operated Systems PBX, PABXAudio Signal Routing____________________________Featureso Guaranteed On-Resistance Match Between Channels, <5ΩMaxo Low On-Resistance, <100ΩMaxo Guaranteed Flat On-Resistance over Specified Signal Range, 7ΩMaxo Guaranteed Charge Injection, <10pC o I NO(OFF)Leakage <2.5nA at +85°C o I COM(OFF)Leakage <20nA at +85°C o ESD Protection >2000Vo Plug-In Upgrade for Industry-Standard DG406/DG407/DG506A/DG507Ao Single-Supply Operation (+4.5V to +30V)Bipolar-Supply Operation (±4.5V to ±20V)o Low Power Consumption, <1.25mW o Rail-to-Rail Signal Handling o TTL/CMOS-Logic CompatibleMAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers________________________________________________________________Maxim Integrated Products 1_____________________Pin Configurations/Functional Diagrams/Truth TablesCall toll free 1-800-998-8800 for free samples or literature.19-0270; Rev 0; 8/94Ordering Information continued at end of data sheet.* Contact factory for dice specifications.M A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +15V, V- = -15V, GND = 0V, V AH = +2.4V, V AL = +0.8V, 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.Voltage Referenced to V-V+............................................................................-0.3V, 44V GND.........................................................................-0.3V, 25V Digital Inputs, NO, COM (Note 1)...........(V- - 2V) to (V+ + 2V) or30mA (whichever occurs first)Continuous Current (any terminal)......................................30mA Peak Current, NO or COM(pulsed at 1ms, 10% duty cycle max)..........................100mA Continuous Power Dissipation (T A = +70°C)Plastic DIP (derate 9.09mW/°C above +70°C)............727mW Wide SO (derate 12.50mW/°C above +70°C)............1000mW PLCC (derate 10.53mW/°C above +70°C)..................842mW CERDIP (derate 16.67mW/°C above +70°C).............1333mW Operating Temperature RangesMAX30_C_ _.......................................................0°C to +70°C MAX30_E_ _.....................................................-40°C to +85°C MAX30_MJI....................................................-55°C to +125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10sec).............................+300°CNote 1:Signals on NO, COM, A0, A1, A2, A3, or EN exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings.MAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)(V+ = +15V, V- = -15V, GND = 0V, V= +2.4V, V = +0.8V, T = T to T , unless otherwise noted.)M A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS—Single Supply(V+ = +12V, V- = 0V, GND = 0V, V AH = +2.4V, V AL = +0.8V, T A = T MIN to T MAX , unless otherwise noted.)Note 2:The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used inthis data sheet.Note 3:Guaranteed by design.Note 4:∆R ON = R ON(MAX)- R ON(MIN).On-resistance match between channels and flatness are guaranteed only with specifiedvoltages. Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured at the extremes of the specified analog signal range.Note 5:Leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C.Note 6:Off isolation = 20log V COM /V NO , where V COM = output and V NO = input to off switch.MAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________5120140160ON-RESISTANCE vs. V COM(DUAL SUPPLIES)1000204060-2020-1515-1010-5580V COM (V)R O N (Ω)120ON-RESISTANCE vs. V COM AND TEMPERATURE (DUAL SUPPLIES)1000204060-1515-1010-55080V COM (V)R O N (Ω)280320360400ON-RESISTANCE vs. V COM (SINGLE SUPPLY)24040801201601520105200V COM (V)R O N (Ω)120140160ON-RESISTANCE vs. V COM AND TEMPERATURE (SINGLE SUPPLY)10002040601510580V COM (V)R O N (Ω)30CHARGE INJECTION vs. V COM20-30-20-100-1515-1010-55010V COM (V)Q j (p C )100.0001-55125OFF LEAKAGE vs. TEMPERATURE1TEMPERATURE (°C)O F F L E A K A G E (n A )250.010.001-35-15650.1100100045851055100.0001-55125ON LEAKAGE vs. TEMPERATURE1TEMPERATURE (°C)O N L E A K A G E (n A )250.010.001-35-15650.11001000458510551000.001-55125SUPPLY CURRENT vs. TEMPERATURE10TEMPERATURE (°C)I +, I - (µA )250.10.01-35-1565145851055__________________________________________Typical Operating Characteristics(T A = +25°C, unless otherwise noted.)__________Applications InformationOperation with Supply VoltagesOther than ±15VUsing supply voltages other than ±15V will reduce the analog signal range. The MAX306/MAX307 switches operate with ±4.5V to ±20V bipolar supplies or with a +4.5V to +30V single supply; connect V- to GND when operating with a single supply. Also, both device types can operate with unbalanced supplies such as +24V and -5V. The Typical Operating Characteristics graphs show typical on-resistance with 20V, 15V, 10V, and 5V supplies. (Switching times increase by a factor of two or more for operation at 5V.)Overvoltage ProtectionProper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maxi-mum ratings because stresses beyond the listed rat-ings may cause permanent damage to the devices.Always sequence V+ on first, then V-, followed by either the logic inputs, NO, or COM. If power-supply sequencing is not possible, add two small signal diodes in series with supply pins for overvoltage pro-tection (Figure 1). Adding diodes reduces the analogsignal range to 1V above V+ and 1V below V-, but low switch resistance and low leakage characteristics are unaffected. Device operation is unchanged, and the difference between V+ and V- should not exceed +44V.M A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 6_______________________________________________________________________________________Output–bidirectionalCOM28Address Inputs A3–A014–17Enable InputsEN 18Analog Inputs–bidirectional NO1–NO819–26Negative Supply Voltage Input V-27Ground GND 12Analog Inputs–bidirectional NO16–NO94–11MAX306PINNo Internal Connections N.C.2, 3, 13Positive Supply Voltage Input V+1FUNCTIONNAME_____________________________________________________________Pin DescriptionsDiodesMAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________7______________________________________________Test Circuits/Timing DiagramsM A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 8________________________________________________________________________________________________________________________Test Circuits/Timing Diagrams (continued)Figure 5. Charge InjectionMAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers_______________________________________________________________________________________9_________________________________Test Circuits/Timing Diagrams (continued)Figure 8. NO/COM CapacitanceM A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers 10______________________________________________________________________________________________Pin Configurations/Functional Diagrams/Truth Tables (continued)A2A1A0EN ON Switch X 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1X 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1X 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1None 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16MAX306LOGIC “0” V AL ≤ 0.8V, LOGIC “1” = V AH ≥ 2.4VA3X 0 0 0 0 0 0 0 0 1 1 1 1 1 1 11A2A1A0EN ON Switch X 0 0 0 0 1 1 1 1X 0 0 1 1 0 0 1 1X 0 1 0 1 0 1 0 10 1 1 1 1 1 1 1 1None 1 2 3 4 5 6 7 8MAX307LOGIC “0” V AL ≤ 0.8V, LOGIC “1” = V AH ≥ 2.4VMAX306/MAX307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers______________________________________________________________________________________11________Pin Configurations/Functional Diagrams/Truth Tables (continued)_Ordering Information (continued)* Contact factory for dice specifications.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.12__________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600©1994 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.M A X 306/M A X 307Precision, 16-Channel/Dual 8-Channel,High-Performance, CMOS Analog Multiplexers __________________________________________________________Chip TopographiesGNDNO1 NO2 NO3 N04 NO5 NO6 NO7 NO80.184" (4.67mm)0.078" (1.98mm)NO9NO10NO11NO12N013NO14NO15NO16N.C.V-COM V+GND NO1A NO2A NO3A N04A NO5A NO6A NO7A NO8A0.184" (4.67mm)0.078" (1.98mm)NO1B NO2B NO3B NO4B N05B NO6B NO7B NO8B COMBV-COMA V+TRANSISTOR COUNT: 269SUBSTRATE IS INTERNALLY CONNECTED TO V+TRANSISTOR COUNT: 269SUBSTRATE IS INTERNALLY CONNECTED TO V+MAX306MAX307N.C. = NO INTERNAL CONNECTION。

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。

MAX1989MEE+中文资料

________________General DescriptionThe MAX1668/MAX1805/MAX1989 are precise multi-channel digital thermometers that report the tempera-ture of all remote sensors and their own packages. The remote sensors are diode-connected transistors—typi-cally low-cost, easily mounted 2N3904 NPN types—that replace conventional thermistors or thermocouples.Remote accuracy is ±3°C for multiple transistor manu-facturers, with no calibration needed. The remote chan-nels can also measure the die temperature of other ICs,such as microprocessors, that contain an on-chip,diode-connected transistor.The 2-wire serial interface accepts standard system management bus (SMBus™) write byte, read byte, send byte, and receive byte commands to program the alarm thresholds and to read temperature data. The data for-mat is 7 bits plus sign, with each bit corresponding to 1°C, in two’s-complement format.The MAX1668/MAX1805/MAX1989 are available in small, 16-pin QSOP surface-mount packages. The MAX1989 is also available in a 16-pin TSSOP.________________________Applications____________________________Featureso Multichannel4 Remote, 1 Local (MAX1668/MAX1989)2 Remote, 1 Local (MAX1805)o No Calibration Required o SMBus 2-Wire Serial Interfaceo Programmable Under/Overtemperature Alarms o Supports SMBus Alert Response o Accuracy±2°C (+60°C to +100°C, Local)±3°C (-40°C to +125°C, Local)±3°C (+60°C to +100°C, Remote)o 3µA (typ) Standby Supply Current o 700µA (max) Supply Currento Small, 16-Pin QSOP/TSSOP PackagesMAX1668/MAX1805/MAX1989†Multichannel Remote/LocalTemperature Sensors________________________________________________________________Maxim Integrated Products119-1766; Rev 2; 5/03SMBus is a trademark of Intel Corp.†Patents PendingDesktop and Notebook Computers LAN Servers Industrial ControlsCentral-Office Telecom EquipmentTest and Measurement Multichip ModulesFor pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .M A X 1668/M A X 1805/M A X 1989†Multichannel Remote/Local Temperature Sensors 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +3.3V, STBY = V CC , configuration byte = X0XXXX00, T A = 0°C to +125°C , 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 CC to GND..............................................................-0.3V to +6V DXP_, ADD_, STBY to GND........................-0.3V to (V CC + 0.3V)DXN_ to GND ........................................................-0.3V to +0.8V SMBCLK, SMBDATA, ALERT to GND......................-0.3V to +6V SMBDATA, ALERT Current.................................-1mA to +50mA DXN_ Current......................................................................±1mA Continuous Power Dissipation (T A = +70°C)QSOP (derate 8.30mW/°C above +70°C)....................667mW TSSOP (derate 9.40mW/°C above +70°C)..................755mWOperating Temperature Range .........................-55°C to +125°C Junction Temperature......................................................+150°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX1668/MAX1805/MAX1989†Multichannel Remote/LocalTemperature Sensors_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)(V CC = +3.3V, STBY = V CC , configuration byte = X0XXXX00, T A = 0°C to +125°C , unless otherwise noted.)ELECTRICAL CHARACTERISTICS(V CC = +5V, STBY = V CC , configuration byte = X0XXXX00, T A = -55°C to +125°C , unless otherwise noted.) (Note 6)08416122024FREQUENCY (MHz)T E M P E R A T U R E E R R O R (°C )TEMPERATURE ERROR vs. SUPPLY NOISE FREQUENCY0.111010020-20110100TEMPERATURE ERROR vs. PC BOARD RESISTANCE-10LEAKAGE RESISTANCE (M Ω)T E M P E R A T U R E E R R O R (°C )10-2-101234-50-10-301030507090110TEMPERATURE ERROR vs. TEMPERATURETEMPERATURE (°C)T E M P E R A T U R E E R R O R (°C )Typical Operating Characteristics(Typical Operating Circuit , V CC = +5V, STBY = V CC , configuration byte = X0XXXX00, T A = +25°C, unless otherwise noted.)M A X 1668/M A X 1805/M A X 1989†Multichannel Remote/Local Temperature Sensors 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS (continued)(V= +5V, STBY = V , configuration byte = X0XXXX00, T = -55°C to +125°C , unless otherwise noted.) (Note 6)Note 1:Guaranteed by design, but not production tested.Note 2:Quantization error is not included in specifications for temperature accuracy. For example, if the MAX1668/MAX1805/MAX1989 device temperature is exactly +66.7°C, the ADC may report +66°C, +67°C, or +68°C (due to the quantization error plus the +0.5°C offset used for rounding up) and still be within the guaranteed ±1°C error limits for the +60°C to +100°C temperature range. See Table 2.Note 3: A remote diode is any diode-connected transistor from Table 1. T R is the junction temperature of the remote diode. See theRemote-Diode Selection section for remote-diode forward-voltage requirements.Note 4:The SMBus logic block is a static design that works with clock frequencies down to DC. While slow operation is possible, itviolates the 10kHz minimum clock frequency and SMBus specifications, and can monopolize the bus.Note 5:Note that a transition must internally provide at least a hold time in order to bridge the undefined region (300ns max) ofSMBCLK’s falling edge t HD:DAT.Note 6:Specifications from -55°C to +125°C are guaranteed by design, not production tested.020406080100120140160012345STANDBY SUPPLY CURRENT vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (µA )257550100125-220468RESPONSE TO THERMAL SHOCKTIME (s)T E M P E R A T U R E (°C )MAX1668/MAX1805/MAX1989†Multichannel Remote/LocalTemperature Sensors_______________________________________________________________________________________50.111000TEMPERATURE ERRORvs. COMMON-MODE NOISE FREQUENCYFREQUENCY (MHz)T E M P E R A T U R E E R R O R (°C )1010000.60.40.20.81.01.21.41.61.82.0Typical Operating Characteristics (continued)(Typical Operating Circuit , V CC = +5V, STBY = V CC , configuration byte = X0XXXX00, T A = +25°C, unless otherwise noted.)TEMPERATURE ERRORvs. DXP_ TO DXN_ CAPACITANCEM A X 16681805 t o c 05DXP_ TO DXN_ CAPACITANCE (nF)T E M P E R A T U R E E R R O R (°C )-10-6-8-2-42040203010405060STANDBY SUPPLY CURRENT vs. CLOCK FREQUENCYSMBCLK FREQUENCY (kHz)S U P P L Y C U R R E N T (µA )6010203040501101001000M A X 1668/M A X 1805/M A X 1989†Multichannel Remote/Local Temperature Sensors 6______________________________________________________________________________________________________Detailed DescriptionThe MAX1668/MAX1805/MAX1989 are temperature sensors designed to work in conjunction with an exter-nal microcontroller (µC) or other intelligence in thermo-static, process-control, or monitoring applications. The µC is typically a power-management or keyboard con-troller, generating SMBus serial commands by “bit-banging” general-purpose input-output (GPIO) pins or through a dedicated SMBus interface block.These devices are essentially 8-bit serial analog-to-digi-tal converters (ADCs) with sophisticated front ends.However, the MAX1668/MAX1805/MAX1989 also contain a switched current source, a multiplexer, an ADC, an SMBus interface, and associated control logic (Figure 1).In the MAX1668 and MAX1989, temperature data from the ADC is loaded into five data registers, where it is automatically compared with data previously stored in 10 over/undertemperature alarm registers. In the MAX1805, temperature data from the ADC is loaded into three data registers, where it is automatically compared with data previously stored in six over/undertemperature alarm registers.ADC and MultiplexerThe ADC is an averaging type that integrates over a 64ms period (each channel, typical), with excellent noise rejection.The multiplexer automatically steers bias currents through the remote and local diodes, measures their forward voltages, and computes their temperatures.Each channel is automatically converted once the con-version process has started. If any one of the channels is not used, the device still performs measurements on these channels, and the user can ignore the results of the unused channel. If any remote-diode channel is unused, connect DXP_ to DXN_ rather than leaving the pins open.The DXN_ input is biased at 0.65V above ground by an internal diode to set up the A/D inputs for a differential measurement. The worst-case DXP_ to DXN_ differential input voltage range is 0.25V to 0.95V.Excess resistance in series with the remote diode caus-es about +0.5°C error per ohm. Likewise, 200µV of offset voltage forced on DXP_ to DXN_causes about 1°C error.MAX1668/MAX1805/MAX1989†Multichannel Remote/LocalTemperature Sensors_______________________________________________________________________________________7Figure 1. MAX1668/MAX1805/MAX1989 Functional DiagramA/D Conversion SequenceIf a start command is written (or generated automatically in the free-running autoconvert mode), all channels are converted, and the results of all measurements are available after the end of conversion. A BUSY status bit in the status byte shows that the device is actually per-forming a new conversion; however, even if the ADC is busy, the results of the previous conversion are always available.Remote-Diode SelectionTemperature accuracy depends on having a good-qual-ity, diode-connected small-signal transistor. Accuracy has been experimentally verified for all of the devices listed in Table 1. The MAX1668/MAX1805/MAX1989 can also directly measure the die temperature of CPUs and other ICs having on-board temperature-sensing diodes.The transistor must be a small-signal type, either NPN or PNP, with a relatively high forward voltage; other-wise, the A/D input voltage range can be violated. The forward voltage must be greater than 0.25V at 10µA;check to ensure this is true at the highest expected temperature. The forward voltage must be less than 0.95V at 100µA; check to ensure this is true at the low-est expected temperature. Large power transistors do not work at all. Also, ensure that the base resistance is less than 100Ω. Tight specifications for forward-current gain (+50 to +150, for example) indicate that the manu-facturer has good process controls and that the devices have consistent VBE characteristics.F or heat-sink mounting, the 500-32BT02-000 thermal sensor from Fenwal Electronics is a good choice. This device consists of a diode-connected transistor, an aluminum plate with screw hole, and twisted-pair cable (Fenwal Inc., Milford, MA, 508-478-6000).Thermal Mass and Self-HeatingThermal mass can seriously degrade the MAX1668/MAX1805/MAX1989s’ effective accuracy. The thermal time constant of the 16-pin QSOP package is about 140s in still air. F or the MAX1668/MAX1805/MAX1989junction temperature to settle to within +1°C after a sudden +100°C change requires about five time con-stants or 12 minutes. The use of smaller packages for remote sensors, such as SOT23s, improves the situa-tion. Take care to account for thermal gradients between the heat source and the sensor, and ensure that stray air currents across the sensor package do not interfere with measurement accuracy.Self-heating does not significantly affect measurement accuracy. Remote-sensor self-heating due to the diode current source is negligible. F or the local diode, theworst-case error occurs when sinking maximum current at the ALERT output. For example, with ALERT sinking 1mA, the typical power dissipation is V CC x 400µA plus 0.4V x 1mA. Package theta J-A is about 150°C/W, so with V CC = 5V and no copper PC board heat sinking,the resulting temperature rise is:dT = 2.4mW x 150°C/W = 0.36°CEven with these contrived circumstances, it is difficult to introduce significant self-heating errors.ADC Noise FilteringThe ADC is an integrating type with inherently good noise rejection, especially of low-frequency signals such as 60Hz/120Hz power-supply hum. Micropower opera-tion places constraints on high-frequency noise rejec-tion; therefore, careful PC board layout and proper external noise filtering are required for high-accuracy remote measurements in electrically noisy environments. High-frequency EMI is best filtered at DXP_ and DXN_with an external 2200pF capacitor. This value can be increased to about 3300pF (max), including cable capacitance. Higher capacitance than 3300pF intro-duces errors due to the rise time of the switched cur-rent source.Nearly all noise sources tested cause additional error measurements, typically by +1°C to +10°C, depending on the frequency and amplitude (see the Typical Operating Characteristics ).PC Board Layout1)Place the MAX1668/MAX1805/MAX1989 as close aspractical to the remote diode. In a noisy environment,such as a computer motherboard, this distance canM A X 1668/M A X 1805/M A X 1989†Multichannel Remote/Local Temperature Sensors 8_______________________________________________________________________________________Table 1. Remote-Sensor Transistor ManufacturersNote:Transistors must be diode connected (base shorted to collector).be 4in to 8in (typ) or more as long as the worst noise sources (such as CRTs, clock generators, memory buses, and ISA/PCI buses) are avoided.2)Do not route the DXP_ to DXN_ lines next to thedeflection coils of a CRT. Also, do not route the traces across a fast memory bus, which can easily introduce +30°C error, even with good filtering.Otherwise, most noise sources are fairly benign.3)Route the DXP_ and DXN_ traces in parallel and inclose proximity to each other, away from any high-voltage traces such as +12VDC. Leakage currents from PC board contamination must be dealt with carefully, since a 20M Ωleakage path from DXP_ to ground causes about +1°C error.4)Connect guard traces to GND on either side of theDXP_ to DXN_ traces (Figure 2). With guard traces in place, routing near high-voltage traces is no longer an issue. 5)Route through as few vias and crossunders as possi-ble to minimize copper/solder thermocouple effects. 6)When introducing a thermocouple, make sure thatboth the DXP_ and the DXN_ paths have matching thermocouples. In general, PC board-induced ther-mocouples are not a serious problem. A copper-sol-der thermocouple exhibits 3µV/°C, and it takes about 200µV of voltage error at DXP_ to DXN_ to cause a +1°C measurement error. So, most para-sitic thermocouple errors are swamped out.7)Use wide traces. Narrow ones are more inductiveand tend to pick up radiated noise. The 10mil widths and spacings recommended in Figure 2 are not absolutely necessary (as they offer only a minor improvement in leakage and noise), but try to use them where practical.8)Copper cannot be used as an EMI shield, and onlyferrous materials such as steel work well. Placing a copper ground plane between the DXP_ to DXN_traces and traces carrying high-frequency noise sig-nals does not help reduce EMI.PC Board Layout Checklist•Place the MAX1668/MAX1805/MAX1989as close as possible to the remote diodes.•Keep traces away from high voltages (+12V bus).•Keep traces away from fast data buses and CRTs.•Use recommended trace widths and spacings.•Place a ground plane under the traces.•Use guard traces flanking DXP_ and DXN_ and con-necting to GND.•Place the noise filter and the 0.1µF V CC bypass capacitors close to the MAX1668/MAX1805/MAX1989.•Add a 200Ωresistor in series with V CC for best noise filtering (see the Typical Operating Circuit ).Twisted-Pair and Shielded CablesFor remote-sensor distances longer than 8in, or in partic-ularly noisy environments, a twisted pair is recommend-ed. Its practical length is 6ft to 12ft (typ) before noise becomes a problem, as tested in a noisy electronics lab-oratory. F or longer distances, the best solution is a shielded twisted pair like that used for audio micro-phones. For example, Belden #8451 works well for dis-tances up to 100ft in a noisy environment. Connect the twisted pair to DXP_ and DXN_ and the shield to GND,and leave the shield’s remote end unterminated.Excess capacitance at DX_ _ limits practical remote-sen-sor distances (see the Typical Operating Characteristics ).F or very long cable runs, the cable’s parasitic capaci-tance often provides noise filtering, so the 2200pF capac-itor can often be removed or reduced in value.Cable resistance also affects remote-sensor accuracy;1Ωseries resistance introduces about +0.5°C error.Low-Power Standby ModeStandby mode disables the ADC and reduces the sup-ply-current drain to less than 12µA. Enter standby mode by forcing the STBY pin low or through the RUN/STOP bit in the configuration byte register.Hardware and software standby modes behave almost identically: all data is retained in memory, and the SMB interface is alive and listening for reads and writes.Activate hardware standby mode by forcing the STBY pin low. In a notebook computer, this line can be con-nected to the system SUSTAT# suspend-state signal. The STBY pin low state overrides any software conversion command. If a hardware or software standby command is received while a conversion is in progress, the conver-MAX1668/MAX1805/MAX1989†Multichannel Remote/LocalTemperature Sensors_______________________________________________________________________________________9Figure 2. Recommended DXP_/DXN_ PC Tracession cycle is truncated, and the data from that conversion is not latched into either temperature-reading register. The previous data is not changed and remains available.In standby mode, supply current drops to about 3µA.At very low supply voltages (under the power-on-reset threshold), the supply current is higher due to the address pin bias currents. It can be as high as 100µA,depending on ADD0 and ADD1 settings.SMBus Digital InterfaceF rom a software perspective, the MAX1668/MAX1805/MAX1989appear as a set of byte-wide registers that contain temperature data, alarm threshold values, or control bits. A standard SMBus 2-wire serial interface is used to read temperature data and write control bits and alarm threshold data. Each A/D channel within the devices responds to the same SMBus slave address for normal reads and writes.The MAX1668/MAX1805/MAX1989employ four standard SMBus protocols: write byte, read byte, send byte, and receive byte (Figure 3). The shorter receive byte protocol allows quicker transfers, provided that the correct data register was previously selected by a read byte instruc-tion. Use caution with the shorter protocols in multimaster systems, since a second master could overwrite the com-mand byte without informing the first master.The temperature data format is 7 bits plus sign in two’s-com-plement form for each channel, with each data bit represent-ing 1°C (Table 2), transmitted MSB first. Measurements are offset by +0.5°C to minimize internal rounding errors; for example, +99.6°C is reported as +100°C.Alarm Threshold RegistersTen (six for MAX1805) registers store alarm threshold data, with high-temperature (T HIGH ) and low-tempera-ture (T LOW ) registers for each A/D channel. If either measured temperature equals or exceeds the corre-sponding alarm threshold value, an ALERT interrupt is asserted.The power-on-reset (POR) state of all T HIGH registers of the MAX1668 and MAX1805 is full scale (0111 1111, or +127°C). The POR state of the channel 1 T HIGH register of the MAX1989 is 0110 1110 or +110°C, while all other channels are at +127°C. The POR state of all T LOW reg-isters is 1100 1001 or -55°C.M A X 1668/M A X 1805/M A X 1989†Multichannel Remote/Local Temperature Sensors 10______________________________________________________________________________________Figure 3. SMBus ProtocolsThere is a continuity fault detector at DXP_ that detects whether the remote diode has an open-circuit condi-tion. At the beginning of each conversion, the diode fault is checked, and the status byte is updated. This fault detector is a simple voltage detector; if DXP_ rises above V CC - 1V (typ) due to the diode current source, a fault is detected. Note that the diode fault is not checked until a conversion is initiated, so immediately after power-on reset, the status byte indicates no fault is present, even if the diode path is broken.If any remote channel is shorted (DXP_ to DXN_ or DXP_ to GND), the ADC reads 0000 0000 so as not to trip either the T HIGH or T LOW alarms at their POR set-tings. In applications that are never subjected to 0°C in normal operation, a 0000 0000 result can be checked to indicate a fault condition in which DXP_ is acciden-tally short circuited. Similarly, if DXP_ is short circuited to V CC , the ADC reads +127°C for all remote and local channels, and the device alarms.A L E R T InterruptsThe ALERT interrupt output signal is latched and can only be cleared by reading the alert response address.Interrupts are generated in response to T HIGH and T LOW comparisons and when a remote diode is disconnected (for continuity fault detection). The interrupt does not halt automatic conversions; new temperature data continues to be available over the SMBus interface after ALERT is asserted. The interrupt output pin is open drain so that devices can share a common interrupt line. The interrupt rate can never exceed the conversion rate.The interface responds to the SMBus alert response address, an interrupt pointer return-address feature (see Alert R esponse Address section). Prior to taking corrective action, always check to ensure that an inter-rupt is valid by reading the current temperature.Alert Response AddressThe SMBus alert response interrupt pointer provides quick fault identification for simple slave devices that lack the complex, expensive logic needed to be a bus master. Upon receiving an ALERT interrupt signal, the host master can broadcast a receive byte transmission to the alert response slave address (0001 100). Then any slave device that generated an interrupt attempts to identify itself by putting its own address on the bus (Table 3).The alert response can activate several different slave devices simultaneously, similar to the I 2C general call. If more than one slave attempts to respond, bus arbitra-tion rules apply, and the device with the lower address code wins. The losing device does not generate an acknowledge and continues to hold the ALERT line low until serviced (implies that the host interrupt input isMAX1668/MAX1805/MAX1989†Multichannel Remote/LocalTemperature Sensors______________________________________________________________________________________11Table 3. Read Format for Alert Response Address (0001100)ADD66Provide the currentMAX1668/MAX1805/MAX1989slave address that was latched at POR (Table 8)FUNCTIONADD55ADD44ADD33ADD22ADD11ADD77(MSB)10(LSB)Logic 1BIT NAMElevel sensitive). Successful reading of the alert response address clears the interrupt latch.Command Byte FunctionsThe 8-bit command byte register (Table 4) is the master index that points to the various other registers within the MAX1668/MAX1805/MAX1989. The register ’s PORstate is 0000 0000, so that a receive byte transmission (a protocol that lacks the command byte) that occurs immediately after POR returns the current local temper-ature data.M A X 1668/M A X 1805/M A X 1989†Multichannel Remote/Local Temperature Sensors 12______________________________________________________________________________________**Not available for MAX1805.MAX1668/MAX1805/MAX1989†Multichannel Remote/LocalTemperature Sensors______________________________________________________________________________________13Manufacturer and DeviceID CodesTwo ROM registers provide manufacturer and device ID codes. Reading the manufacturer ID returns 4Dh,which is the ASCII code M (for Maxim). Reading the device ID returns 03h for MAX1668, 05h for MAX1805,and 0Bh for MAX1989. If the read word 16-bit SMBus protocol is employed (rather than the 8-bit Read Byte),the least significant byte contains the data and the most significant byte contains 00h in both cases.Configuration Byte FunctionsThe configuration byte register (Table 5) is used to mask (disable) interrupts and to put the device in soft-ware standby mode.Status Byte FunctionsThe two status byte registers (Tables 6 and 7) indicate which (if any) temperature thresholds have been exceeded. The first byte also indicates whether the ADC is converting and whether there is an open circuit in a remote-diode DXP_ to DXN_ path. After POR, the normal state of all the flag bits is zero, assuming none of the alarm conditions are present. The status byte is cleared by any successful read of the status byte,unless the fault persists. Note that the ALERT interrupt latch is not automatically cleared when the status flag bit is cleared.When reading the status byte, you must check for inter-nal bus collisions caused by asynchronous ADC timing,or else disable the ADC prior to reading the status byte (through the RUN/STOP bit in the configuration byte).To check for internal bus collisions, read the status byte. If the least significant 7 bits are ones, discard the data and read the status byte again. The status bits LHIGH, LLOW, RHIGH, and RLOW are refreshed on the SMBus clock edge immediately following the stop con-dition, so there is no danger of losing temperature-relat-ed status data as a result of an internal bus collision.The OPEN status bit (diode continuity fault) is only refreshed at the beginning of a conversion, so OPEN data is lost. The ALERT interrupt latch is independent of the status byte register, so no false alerts are generated by an internal bus collision.If the THIGH and TLOW limits are close together, it ’s possible for both high-temp and low-temp status bits to be set, depending on the amount of time between sta-tus read operations (especially when converting at the fastest rate). In these circumstances, it ’s best not to relyon the status bits to indicate reversals in long-term tem-perature changes and instead use a current tempera-ture reading to establish the trend direction.Conversion RateThe MAX1668/MAX1805/MAX1989 are continuously measuring temperature on each channel. The typical conversion rate is approximately three conversions/s (for both devices). The resulting data is stored in the temperature data registers.Slave AddressesThe MAX1668/MAX1805/MAX1989 appear to the SMBus as one device having a common address for all ADC channels. The device address can be set to one of nine different values by pin-strapping ADD0 and ADD1 so that more than one MAX1668/MAX1805/MAX1989 can reside on the same bus without address conflicts (Table 8).The address pin states are checked at POR only, and the address data stays latched to reduce quiescent supply current due to the bias current needed for high-Z state detection.The MAX1668/MAX1805/MAX1989 also respond to the SMBus alert response slave address (see the Alert Response Address section).POR and Undervoltage LockoutThe MAX1668/MAX1805/MAX1989 have a volatile memory. To prevent ambiguous power-supply condi-tions from corrupting the data in memory and causing erratic behavior, a POR voltage detector monitors V CC and clears the memory if V CC falls below 1.8V (typ, see the Electrical Characteristics table). When power is first applied and V CC rises above 1.85V (typ), the logic blocks begin operating, although reads and writes at V CC levels below 3V are not recommended. A second V CC comparator, the ADC UVLO comparator, prevents the ADC from converting until there is sufficient head-room (V CC = 2.8V typ).Power-Up Defaults•Interrupt latch is cleared.•Address select pins are sampled.•ADC begins converting.•Command byte is set to 00h to facilitate quick remote receive byte queries.•T HIGH and T LOW registers are set to max and min limits, respectively.。

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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
Guidance and Control Systeisplays
Battery-Operated Systems
(pulsed at 1ms, 10% duty cycle max) ..........................100mA ESD per Method 3015.7 ..................................................>2000V
Continuous Power Dissipation (TA = +70°C) (Note 2) Plastic DIP (derate 10.53mW/°C above +70°C) ..........842mW Narrow SO (derate 8.70mW/°C above +70°C) ............696mW QFN (derate 19.2mW/°C above +70°C) ....................1538mW CERDIP (derate 10.00mW/°C above +70°C) ...............800mW
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at .
元器件交易网
DIP/SO
MAX352
LOGIC
SWITCH
0
OFF
1
ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
IN1 1 COM1 2
NO1 3 V- 4
GND 5 NO4 6 COM4 7 IN4 8
MAX353
16 IN2 15 COM2 14 NC2 13 V+ 12 VL 11 NC3 10 COM3 9 IN3
Note 2: All leads are soldered or welded to PC board.
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.
MAX351ESE -40°C to +85°C 16 Narrow SO
MAX351EJE -40°C to +85°C 16 CERDIP
MAX351MJE -55°C to +125°C 16 CERDIP
Ordering Information continued at end of data sheet. *Contact factory for availability and processing to MIL-STD-883.
IN1 1 COM1 2
NO1 3 V- 4
GND 5 NO4 6 COM4 7 IN4 8
MAX352
16 IN2 15 COM2 14 NO2 13 V+ 12 VL 11 NO3 10 COM3 9 IN3
DIP/SO
MAX351
LOGIC
SWITCH
0
ON
1
OFF
Pin Configuration continued at end of data sheet.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
IN1 1 COM1 2
NC1 3 V- 4
GND 5 NC4 6 COM4 7 IN4 8
MAX351
16 IN2 15 COM2 14 NC2 13 V+ 12 VL 11 NC3 10 COM3 9 IN3
MAX351/MAX352/MAX353
Precision, Quad, SPST Analog Switches
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+ .......................................................................................44V GND ...................................................................................25V VL ................................................(GND - 0.3V) to (V+ + 0.3V)
LOGIC
0 1
DIP/SO
MAX353 SWITCHES
1, 4
OFF ON
SWITCHES 2, 3
ON OFF
________________________________________________________________ Maxim Integrated Products 1
The MAX351/MAX352/MAX353 are fabricated with Maxim’s new improved 44V silicon-gate process. Design improvements guarantee extremely low charge injection (10pC), low power consumption (35µW), and electrostatic discharge (ESD) greater than 2000V. The 44V maximum breakdown voltage allows rail-to-rail analog signal handling.
Test Equipment
PBX, PABX
____________________________Features
o Low On Resistance < 22Ω Typical (35Ω Max) o Guaranteed Matched On Resistance Between
Channels < 2Ω o Guaranteed Flat On Resistance Over Analog
These monolithic switches operate with a single positive supply (+10V to +30V) or with split supplies (±4.5V to ±20V) while retaining CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading.
Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C