MAX3241ECAI中文资料

GeneralDescriptionTheMAX3222E/MAX3232E/MAX3237E/MAX3241Eare3V-poweredEIA/TIA-232andV.28/V.24communicationsinterfaceswithlowpowerrequirements,highdata-ratecapabilities,andenhancedelectrostaticdischarge(ESD)protection.Alltransmitteroutputsandreceiverinputsareprotectedto±15kVusingIEC1000-4-2Air-GapDischarge,±8kVusingIEC1000-4-2ContactDischarge,and±15kVusingtheHumanBodyModel.Inaddition,theMAX3237E’slogicandreceiverI/OpinsareprotectedtotheaboveESDstandards.Thetransceivershaveaproprietarylow-dropouttransmit-teroutputstage,deliveringtrueRS-232performancefroma+3.0Vto+5.5Vsupplywithadualchargepump.Thechargepumprequiresonlyfoursmall0.1µFcapacitorsforoperationfroma+3.3Vsupply.Eachdeviceisguaran-teedtorunatdataratesof250kbpswhilemaintainingRS-232outputlevels.TheMAX3237Eisguaranteedtorunatdataratesof250kbpsinthenormaloperatingmodeand1MbpsintheMegaBaud™operatingmodewhilemain-tainingRS-232-compliantoutputlevels.TheMAX3222E/MAX3232Ehavetworeceiversandtwodrivers.TheMAX3222Efeaturesa1µAshutdownmodethatreducespowerconsumptionandextendsbatterylifeinportablesystems.Itsreceiverscanremainactiveinshutdownmode,allowingexternaldevicessuchasmodemstobemonitoredusingonly1µAsupplycurrent.BoththeMAX3222EandMAX3232Earepin,package,andfunctionallycompatiblewiththeindustry-standardMAX242andMAX232,respectively.TheMAX3241Eisacompleteserialport(threedrivers/fivereceivers)designedfornotebookandsub-notebookcomputers.TheMAX3237E(fivedrivers/threereceivers)isidealforperipheralapplicationsthatrequirefastdatatransfer.Bothdevicesfeatureashutdownmodeinwhichallreceiverscanremainactivewhileusingasupplycurrentofonly1µA(MAX3241E)or10nA(MAX3237E).TheMAX3237E/MAX3241Ehaveadditionalreceiveroutputsthatalwaysremainactive.TheMAX3222E,MAX3232E,andMAX3241Eareavail-ableinspace-savingSO,SSOP,andTSSOPpackages.TheMAX3237EisavailableinanSSOPpackage.________________________ApplicationsBattery-PoweredEquipmentPrintersCellPhonesSmartPhonesCell-PhoneDataCablesxDSLModemsNotebook,Subnotebook,andPalmtopComputersFeaturesESDProtectionforRS-232I/OPins(MAX3222E/MAX3232E/MAX3237E/MAX3241E)±15kV—HumanBodyModel±8kV—IEC1000-4-2,ContactDischarge±15kV—IEC1000-4-2,Air-GapDischargeESDProtectionForAllLogicandReceiverI/OPins(MAX3237E)±15kV—HumanBodyModel±8kV—IEC1000-4-2,ContactDischarge±15kV—IEC1000-4-2,Air-GapDischargeGuaranteedDataRate250kbps(MAX3222E/MAX3232E/MAX3241EandMAX3237E,NormalOperation)1Mbps(MAX3237E,MegaBaudOperation)LatchupFreeLow-PowerShutdownwithReceiversActive1µA(MAX3222E/MAX3241E)10nA(MAX3237E)Flow-ThroughPinout(MAX3237E)GuaranteedMouseDriveability(MAX3241E)MeetsEIA/TIA-232SpecificationsDownto3.0VMAX3222E/MAX3232E/MAX3237E/MAX3241E†±15kVESD-Protected,Downto10nA,3.0Vto5.5V,Upto1Mbps,TrueRS-232Transceivers________________________________________________________________MaximIntegratedProducts119-1298;Rev5;3/02PARTMAX3222ECUPMAX3222ECAP0°Cto+70°C0°Cto+70°CTEMPRANGEPIN-PACKAGE20TSSOP20SSOP_______________OrderingInformationOrderingInformationcontinuedatendofdatasheet.___________________________SelectorGuideTypicalOperatingCircuitsappearatendofdatasheet.PinConfigurationsappearatendofdatasheet.MegaBaudisatrademarkofMaximIntegratedProducts,Inc.†CoveredbyU.S.Patentnumbers4,636,930;4,679,134;4,777,577;4,797,899;4,809,152;4,897,774;4,999,761;andotherpatentspending.Forpricing,delivery,andorderinginformation,pleasecontactMaxim/DallasDirect!at1-888-629-4642,orvisitMaxim’swebsiteat(kbps)MAX3222E2/2✔250MAX3232E2/2—250MAX3237E(Normal)5/3✔250MAX3237E(MegaBaud)5/3✔250MAX3241E3/5✔1MMAX3222E/MAX3232E/MAX3237E/MAX3241E±15kVESD-Protected,Downto10nA,3.0Vto5.5V,Upto1Mbps,TrueRS-232Transceivers2_______________________________________________________________________________________ABSOLUTEMAXIMUMRATINGSELECTRICALCHARACTERISTICS(VCC=+3.0Vto+5.5V,C1–C4=0.1µF,TA=TMINtoTMAX,unlessotherwisenoted.TypicalvaluesareatTA=+25°C.)(Note2)Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.VCCtoGND..............................................................-0.3Vto+6VV+toGND(Note1)..................................................-0.3Vto+7VV-toGND(Note1)...................................................+0.3Vto-7VV++|V-|(Note1).................................................................+13VInputVoltagesT_IN,EN,SHDN,MBAUDtoGND........................-0.3Vto+6VR_INtoGND.....................................................................±25VOutputVoltagesT_OUTtoGND...............................................................±13.2VR_OUT,R_OUTB(MAX3241E)................-0.3Vto(VCC+0.3V)Short-CircuitDuration,T_OUTtoGND.......................ContinuousContinuousPowerDissipation(TA=+70°C)16-PinSSOP(derate7.14mW/°Cabove+70°C)..........571mW16-PinWid