MAX3232中文资料.pdf

___________________________________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0.1µF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1µA关断模式，有效降低功耗并延长便携式产品的电池使用寿命。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1µA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1µA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：±15kVESD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：MAX3380E/MAX3381E：+2.35V至+5.5V、1µA、2Tx/2RxRS-232收发器，带有±15kVESD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0.1µF外部电容________________________________________________________________MaximIntegratedProducts1181716151413121112345678SHDNVCCGNDT1OUTC1-V+C1+ENTOPVIEWR1INR1OUTT1INT2INT2OUTV-C2-C2+109R2OUTR2INDIP/SOMAX3222+MAX3222_______________________________引脚配置_______________________________定购信息19-0273;Rev7;1/07MegaBaud和UCSP是MaximIntegratedProducts,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。PARTTEMPRANGEPIN-PACKAGEPKGCODEMAX3222CUP+0°Cto+70°C20TSSOPU20+2MAX3222CAP+0°Cto+70°C20SSOPA20+1MAX3222CWN+0°Cto+70°C18SOW18+1MAX3222CPN+0°Cto+70°C18PlasticDipP18+5本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：108008521249(北中国区)，108001521249(南中国区)，或访问Maxim的中文网站：china.maxim-ic.com。VCC=5.0VMAX3222/MAX3232/MAX3237/MAX32413.0V至5.5V、低功耗、1Mbps、真RS-232收发器，使用四只0.1µF外部电容2_______________________________________________________________________________________ABSOLUTEMAXIMUMRATINGSELECTRICALCHARACTERISTICS(VCC=+3.0Vto+5.5V,C1–C4=0.1µF(Note2),TA=TMINtoTMAX,unlessotherwisenoted.TypicalvaluesareatTA=+25°C.)Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.Note1:V+andV-canhaveamaximummagnitudeof7V,buttheirabsolutedifferencecannotexceed13V.VCC...........................................................................-0.3Vto+6VV+(Note1)...............................................................-0.3Vto+7VV-(Note1)................................................................+0.3Vto-7VV++V-(Note1)...................................................................+13VInputVoltagesT_IN,SHDN,EN...................................................-0.3Vto+6VMBAUD...................................................-0.3Vto(VCC+0.3V)R_IN.................................................................................±25VOutputVoltagesT_OUT...........................................................................±13.2VR_OUT....................................................-0.3Vto(VCC+0.3V)Short-CircuitDurationT_OUT....................................................................ContinuousContinuousPowerDissipation(TA=+70°C)16-PinTSSOP(derate6.7mW/°Cabove+70°C).............533mW16-PinNarrowSO(derate8.70mW/°Cabove+70°C)....696mW16-PinWideSO(derate9.52mW/°Cabove+70°C)........762mW16-PinPlasticDIP(derate10.53mW/°Cabove+70°C)...842mW18-PinSO(derate9.52mW/°Cabove+70°C)..............762mW18-PinPlasticDIP(derate11.11mW/°Cabove+70°C)..889mW20-PinSSOP(derate7.00mW/°Cabove+70°C).........559mW20-PinTSSOP(derate8.0mW/°Cabove+70°C).............640mW28-PinTSSOP(derate8.7mW/°Cabove+70°C).............696mW28-PinSSOP(derate9.52mW/°Cabove+70°C).........762mW28-PinSO(derate12.50mW/°Cabove+70°C).....................1WOperatingTemperatureRangesMAX32__C__.....................................................0°Cto+70°CMAX32__E__.................................................-40°Cto+85°CStorageTemperatureRange.............................-65°Cto+150°CLeadTemperature(soldering,10s).................................+300°CIOUT=-1.0mAIOUT=1.6mAReceiversdisabledT_IN,EN,SHDN,MBAUDT_IN,EN,SHDN,MBAUDCONDITIONSV0.81.5InputThresholdLow0.61.2V-2525InputVoltageRange0.52.0VCCPower-SupplyCurrentVVCC-0.6VCC-0.1OutputVoltageHighV0.4OutputVoltageLowµA±0.05±10OutputLeakageCurrentµA±0.01±1.0InputLeakageCurrentV0.8InputLogicThresholdLow(Note3)UNITSMINTYPMAXPARAMETERTA=+25°CTA=+25°CV1.82.4InputThresholdHigh1.52.4VCC=3.3VVCC=5.0V2.0V2.4InputLogicThresholdHigh(Note3)Noload,VCC=3.3Vor5.0V,TA=+25°CmA0.31.0MAX3222/MAX3232/MAX3241MAX3237SHDN=GND,TA=+25°CµA1.010ShutdownSupplyCurrentVCC=3.3VVCC=5.0VVCC=3.3VVCC=5.0VDCCHARACTERISTICSLOGICINPUTSANDRECEIVERO