MAX3232中文资料.pdf.pdf

1、_ 概述MAX3222/MAX3232/MAX3237/MAX3241收发器采用专有的低压差发送器输出级，利用双电荷泵在3.0V至5.5V电源供电时能够实现真正的RS-232性能。器件仅需四个0.1F的外部小尺寸电荷泵电容。MAX3222、MAX3232和MAX3241确保在120kbps数据速率下维持RS-232输出电平。MAX3237在正常工作模式下可确保250kbps的数据速率，MegaBaudTM工作模式下保证1Mbps的速率，同时保持RS-232输出电平。MAX3222/MAX3232具有2路接收器和2路驱动器。MAX3222提供1A关断模式，有效降低功耗并延长便携式产品的电池使用寿

2、命。关断模式下，接收器保持有效状态，对外部设备(例如调制解调器)进行监测，仅消耗1A电源电流。MAX3222和MAX3232的引脚、封装和功能分别与工业标准的MAX242和MAX232兼容。MAX3241提供一个完整串口(3路驱动器/5路接收器)，设计用于笔记本电脑和亚笔记本电脑。MAX3237(5路驱动器/3路接收器)可理想用于高速调制解调器。这两款器件都具有关断模式，关断时所有接收器保持有效状态，仅消耗1A电源电流。接收器R1(MAX3237/MAX3241)和R2(MAX3241)除标准输出外还提供附加输出。这些附加输出始终保持有效，可以对调制解调器等外部设备进行监测，电路(可能已完全撤

3、除VCC电源)中无需正向偏置保护二极管。MAX3222、MAX3232以及MAX3241采用节省空间的TSSOP和SSOP封装。_ 应用笔记本电脑、亚笔记本电脑与掌上电脑高速调制解调器电池供电设备手持式装置外设打印机_ 下一代器件特性 更小封装的器件：MAX3228E/MAX3229E：+2.5V至+5.5V、RS-232收发器，采用UCSPTM封装 集成ESD保护的器件：MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E：15kV ESD保护、电流低至10nA、3.0V至5.5V供电、速率高达1Mbps的真RS-232收发器 低电压或数据电缆传输应用：M

4、AX3380E/MAX3381E：+2.35V至+5.5V、1A、2Tx/2Rx RS-232收发器，带有15kV ESD保护的I/O和逻辑引脚MAX3222/MAX3232/MAX3237/MAX32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1F外部电容_ Maxim Integrated Products1181716151413121112345678SHDNVCCGNDT1OUTC1-V+C1+ENTOP VIEWR1INR1OUTT1INT2INT2OUTV-C2-C2+109R2OUTR2INDIP/SOMAX3222+MAX3222_ 引脚配置

5、_ 定购信息19-0273;Rev 7;1/07MegaBaud和UCSP是Maxim Integrated Products,Inc.的商标。典型工作电路在数据资料的最后给出。引脚配置(续)在数据资料的最后给出。定购信息(续)在数据资料的最后给出。+表示无铅封装。PARTTEMP RANGEPIN-PACKAGEPKGCODEMAX3222CUP+0C to+70C20 TSSOPU20+2MAX3222CAP+0C to+70C20 SSOPA20+1MAX3222CWN+0C to+70C18 SOW18+1MAX3222CPN+0C to+70C18 Plastic DipP18+5本

6、文是英文数据资料的译文，文中可能存在翻译上的不准确或错误。如需进一步确认，请在您的设计中参考英文资料。有关价格、供货及订购信息，请联络Maxim亚洲销售中心：10800 852 1249(北中国区)，10800 152 1249(南中国区)，或访问Maxim的中文网站：china.maxim-。VCC=5.0VMAX3222/MAX3232/MAX3237/MAX32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1F外部电容2_ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(VCC=+3.0V to+5.5V

7、,C1C4=0.1F(Note 2),TA=TMINto TMAX,unless otherwise noted.Typical values are at TA=+25C.)Stresses beyond those listed under“Absolute Maximum Ratings”may cause permanent damage to the device.These are stress ratings only,and functionaloperation of the device at these or any other conditions beyond tho

8、se indicated in the operational sections of the specifications is not implied.Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.Note 1:V+and V-can have a maximum magnitude of 7V,but their absolute difference cannot exceed 13V.VCC.-0.3V to+6VV+(Note 1).-

9、0.3V to+7VV-(Note 1).+0.3V to-7VV+V-(Note 1).+13VInput VoltagesT_IN,SHDN,EN.-0.3V to+6VMBAUD.-0.3V to(VCC+0.3V)R_IN.25VOutput VoltagesT_OUT.13.2VR_OUT.-0.3V to(VCC+0.3V)Short-Circuit DurationT_OUT.ContinuousContinuous Power Dissipation(TA=+70C)16-Pin TSSOP(derate 6.7mW/C above+70C).533mW16-Pin Narro

10、w SO(derate 8.70mW/C above+70C).696mW16-Pin Wide SO(derate 9.52mW/C above+70C).762mW16-Pin Plastic DIP(derate 10.53mW/C above+70C).842mW18-Pin SO(derate 9.52mW/C above+70C).762mW18-Pin Plastic DIP(derate 11.11mW/C above+70C).889mW20-Pin SSOP(derate 7.00mW/C above+70C).559mW20-Pin TSSOP(derate 8.0mW/

11、C above+70C).640mW28-Pin TSSOP(derate 8.7mW/C above+70C).696mW28-Pin SSOP(derate 9.52mW/C above+70C).762mW28-Pin SO(derate 12.50mW/C above+70C).1WOperating Temperature RangesMAX32_ _C_ _.0C to+70CMAX32_ _E_ _.-40C to+85CStorage Temperature Range.-65C to+150CLead Temperature(soldering,10s).+300CIOUT=

12、-1.0mAIOUT=1.6mAReceivers disabledT_IN,EN,SHDN,MBAUDT_IN,EN,SHDN,MBAUDCONDITIONSV0.81.5Input Threshold Low0.61.2V-2525Input Voltage Range0.52.0VCCPower-Supply CurrentVVCC-0.6VCC-0.1Output Voltage HighV0.4Output Voltage LowA0.0510Output Leakage CurrentA0.011.0Input Leakage CurrentV0.8Input Logic Thre

13、shold Low(Note 3)UNITSMINTYPMAXPARAMETERTA=+25CTA=+25CV1.82.4Input Threshold High1.52.4VCC=3.3VVCC=5.0V2.0V2.4Input Logic Threshold High(Note 3)No load,VCC=3.3V or 5.0V,TA=+25CmA0.31.0MAX3222/MAX3232/MAX3241MAX3237SHDN=GND,TA=+25CA1.010Shutdown Supply CurrentVCC=3.3VVCC=5.0VVCC=3.3VVCC=5.0VDC CHARAC

14、TERISTICS LOGIC INPUTS AND RECEIVER OUTPUTS RECEIVER INPUTS MAX3222/MAX3232/MAX3237/MAX32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1F外部电容_3TIMING CHARACTERISTICSMAX3222/MAX3232/MAX3241(VCC=+3.0V to+5.5V,C1C4=0.1F(Note 2),TA=TMINto TMAX,unless otherwise noted.Typical values are at TA=+25C.)ELECTRICAL CH

15、ARACTERISTICS(continued)(VCC=+3.0V to+5.5V,C1C4=0.1F(Note 2),TA=TMINto TMAX,unless otherwise noted.Typical values are at TA=+25C.)T1IN=T2IN=GND,T3IN=VCC,T3OUT loaded with 3k to GND,T1OUT and T2OUT loaded with 2.5mA eachCONDITIONSV5.0Transmitter Output VoltageV0.3Input HysteresisUNITSMINTYPMAXPARAMET

16、ERAll transmitter outputs loaded with 3k to groundV5.05.4Output Voltage SwingmA3560Output Short-Circuit CurrentVCC=V+=V-=0V,VOUT=2V30010MOutput ResistanceVOUT=12V,VCC=0V or 3V to 5.5V,transmitters disabledA25Output Leakage CurrenttPHLRL=3k,CL=1000pF,one transmitter switchingtPLH|tPHL-tPLH|tPHL-tPLH|Normal operationNormal operationCONDITIONS0.3s0.3Receiver Propagation Delaykbps120235Maximum Data Ratens300Receiver Skewns300Transmitter Skewns200Receiver Output Disable Timens200Receiver Output Enabl