MAX3221_03中文资料

_______________GeneralDescriptionTheMAX3221/MAX3223/MAX3243achieve1µAsupplycurrentwithMaxim’srevolutionaryAutoShutdown™fea-ture.WhentheMAX3221/MAX3223/MAX3243donotsenseavalidsignallevelontheirreceiverinputs,theon-boardpowersupplyanddriversshutdown.ThisoccursiftheRS-232cableisdisconnectedorifthetransmittersoftheconnectedperipheralareturnedoff.ThesystemturnsonagainwhenavalidlevelisappliedtoanyRS-232receiverinput.Asaresult,thesystemsavespowerwithoutchangestotheexistingBIOSoroperatingsystem.TheMAX3221/MAX3223/MAX3243transceiversare3V-poweredEIA/TIA-232andV.28/V.24communicationsinterfacesintendedfornotebookcomputerapplica-tions.Aproprietary,high-efficiency,dualcharge-pumppowersupplyandalow-dropouttransmittercombinetodelivertrueRS-232performancefromasingle+3.0Vto+5.5Vsupply.Aguaranteeddatarateof120kbpspro-videscompatibilitywithpopularsoftwareforcommuni-catingwithpersonalcomputers.TheMAX3221/MAX3223/MAX3243requireonly0.1µFcapacitorsin3.3Voperation,andcanoperatefrominputvoltagesrangingfrom+3.0Vto+5.5V.Theyareidealfor3.3V-onlysystems,mixed3.3Vand5.0Vsystems,or5.0V-onlysystemsthatrequiretrueRS-232performance.TheMAX3221isa1-driver/1-receiver16-pinSSOPver-sionofthe20-pinMAX3223(2-driver/2-receiver).TheMAX32433-driver/5-receiver,completeserialportisidealfornotebookorsubnotebookcomputers.TheMAX3243includesonecomplementaryalways-activereceiver.Thisreceivercanmonitoranexternaldevice(suchasamodem)inshutdown,withoutforwardbias-ingtheprotectiondiodesinaUARTthatmayhaveVCCcompletelyremoved.NextGenerationDeviceFeatures♦ForSpace-ConstrainedApplications:MAX3228/MAX3229:+2.5Vto+5.5VRS-232TransceiversinUCSP™♦ForIntegratedESDProtection:MAX3222E/MAX3232E/MAX3237E/MAX3241E*/MAX3246E:±15kVESD-Protected,Downto10nA,3.0Vto5.5V,Upto1Mbps,TrueRS-232Transceivers(MAX3246EAvailableinUCSPPackage)♦ForLow-VoltageorDataCableApplications:MAX3380E/MAX3381E:+2.5Vto+5.5V,1µA,2Tx/2RxRS-232Transceiverswith±15kVESD-ProtectedI/OandLogicPins________________________ApplicationsNotebook,Subnotebook,andPalmtopComputersBattery-PoweredEquipmentHand-HeldEquipmentPeripheralsPrintersMAX3221/MAX3223/MAX3243*1µASupply-Current,True+3Vto+5.5VRS-232TransceiverswithAutoShutdown________________________________________________________________MaximIntegratedProducts119-0306;Rev8;10/03PARTMAX3221CAEMAX3221EUE†-40°Cto+85°C0°Cto+70°CTEMPRANGEPIN-PACKAGE16SSOP16TSSOP*CoveredbyU.S.Patentnumbers4,636,930;4,679,134;4,777,577;4,797,899;4,809,152;4,897,774;4,999,761;andotherpatentspending.†Futureproduct—contactfactoryforavailability.AutoShutdownandUCSParetrademarksofMaximIntegratedProducts,Inc.PinConfigurationsappearatendofdatasheet.TypicalOperatingCircuitsappearatendofdatasheet.MAX3223EPP-40°Cto+85°C20PlasticDIPMAX3223EAP-40°Cto+85°C20SSOPMAX3243CWI0°Cto+70°C28WideSOMAX3243CAI0°Cto+70°C28SSOPMAX3243EWI-40°Cto+85°C28WideSOMAX3243EAI-40°Cto+85°C28SSOPMAX3223CPPMAX3223CAP0°Cto+70°C0°Cto+70°C20PlasticDIP20SSOP______________OrderingInformation_____________________SelectorGuideMAX3221MAX3223MAX3243123123.0to5.53.0to5.53.0to5.55YesYesYesPARTTxRxVCCRANGE(V)AutoShutdownMAX3221CUE†0°Cto+70°C16TSSOPMAX3221EAE-40°Cto+85°C16SSOPMAX3223CUP0°Cto+70°C20TSSOPMAX3223EUP-40°Cto+85°C20TSSOPMAX3243CUI0°Cto+70°C28TSSOPMAX3243EUI-40°Cto+85°C28TSSOPForpricing,delivery,andorderinginformation,pleasecontactMaxim/DallasDirect!at1-888-629-4642,orvisitMaxim’swebsiteatµASupply-Current,True+3Vto+5.5VRS-232TransceiverswithAutoShutdown2_______________________________________________________________________________________ABSOLUTEMAXIMUMRATINGSELECTRICALCHARACTERISTICS(VCC=+3.0Vto+5.5V,C1–C4=0.1µF(Note2),TA=TMINtoTMAX,unlessotherwisenoted.TypicalvaluesareatTA=+25°C.)Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.VCC...........................................................................-0.3Vto+6VV+(Note1)...............................................................-0.3Vto+7VV-(Note1)...............................................................+0.3Vto-7VV++|V-|(Note1).................................................................+13VInputVoltagesT_IN,FORCEOFF,FORCEON,EN(MAX3223)......-0.3Vto+6VR_IN...................................................................................±25VOutputVoltagesT_OUT.............................................................................±13.2VR_OUT,INVALID......................................-0.3Vto(VCC+0.3V)Short-CircuitDurationT_OUT......................................................................ContinuousContinuousPowerDissipation(TA=+70°C)16-PinSSOP(derate7.14mW/°Cabove+70°C)...........571mW16-PinTSSOP(derate6.70mW/°Cabove+70°C).........533mW20-PinPlasticDIP(derate11.11mW/°Cabove+70°C)....889mW20-PinSSOP(derate8.00mW/°Cabove+70°C)...