MAXM22511隔離的全雙工收發(fā)器模塊

WordMAXM22510/MAXM22511隔離的全雙工收發(fā)器模塊

TheMAXM22510andMAXM22511isola（te）dRS-485/RS-422，full-duplex，transceivermodulesprovide2500VRMS（60s）ofgalvanicisolaTIonbetweenthecable-side（RS-485/RS-422driver/receiverside）andtheUART-sideofthedevice.AnintegratedDC-DCpowersthecable-sideofthemodule.Noexternalcomponentsarerequired.

Isola（TI）onimprovescommunicaTIonbybreakinggroundloopsandreducesnoisewhentherearelargedifferencesingroundpotenTIalbetweenports.Thesedevicesallowforrobustcommunicationupto500kpbs（MAXM22510）and25Mbps（MAXM22511）。

TheMAXM22510/MAXM22511operatefromasingle3.3VsupplyontheUART-side.AnintegratedDC-DCconvertergeneratesthe3.3Voperatingvoltageforthecable-sideofthemodule.

Thedevicesincludeonedrivechannelandonereceivechannel.Thereceiveris1/4-unitlo（ad），allowingupto128transceiversonacommonbus.Integratedtruefail-safecircuitryensuresalogic-highonthereceiveroutputwheninputsareshortedoropen.Undervoltagelockoutdisablesthedriverwhencable-sideorUART-sidepowersuppliesarebelowfunctionallevels.

Thedriveroutputsandreceiverinputsareprotectedfrom±35kVelectrostaticdischarge（ESD）toGNDBonthecable-side，asspecifiedbytheHumanBodyModel（HBM）。

TheMAXM22510/MAXM22511areav（ai）lableinanLGA44-（pi）npackageandoperateoverthe-40℃to+105℃temperaturerange.

MAXM22510/1主要優(yōu)勢和特性：

SpaceSavingSolutionFullyIntegratedModuleforCompactDesign

High-Pe（rf）ormanceTransceiverEnablesFlexibleDesignsIntegratedDC-DCforCable-SidePower

CompliantwithRS-485EIA/TIA-485Standard

500kpbsMaximumDataRatefortheMAXM22510

25MbpsMaximumDataRatefortheMAXM22511

AllowsUpto128DevicesontheBus

IntegratedProtectionEnsuresforRobustCommunication±35kVESD（HBM）onDriverOutputs/ReceiverInputs

2.5kVRMSWithstandIsolationVoltagefor60Seconds（VISO）

630VPEAKMaximumRepetitivePeak-IsolationVoltage（VIORM）

445VRMSMaximumWorking-IsolationVoltage（VIOWM）

Withstands±10kVSurgeperIEC61000-4-5

ThermalShutdown

SafetyRegulatory（App）rovalsPending

ULAccordingtoUL1577

cULAccordingtoCSABulletin5A

MAXM22510/1應用：

IndustrialAutomation

Prog（ram）mableLogicControllers

HVAC

PowerMeters

BuildingAutomation

圖1.MAXM22510/1功能框圖

圖2.MAXM22510/1隔離全雙工RS-485/RS-422應用電路

圖3.MAXM22510/1典型隔離點對點應用框圖

圖4.MAXM22510/1典型應用電路圖

評估板MAXM22511EVK

TheMAXM22511evaluationkit（EVkit）isafullyassembledandtested（PCB）thatdemonstratesthefunctionalityoftheMAXM22511isolatedRS-485/RS-422transceivermodule.TheEVkitoperatesfromasingle3.3Vsupply.

TheEVkitisafullyassembledandtestedcircuitboardforevaluatingtheMAXM22511isolatedRS-485/RS-422transceivermodule（U1）。TheEVkitisdesignedtoevalu-atetheMAXM22511aloneorinastandardRS-485con-figuration.

評估板MAXM22511EVK主要特性：

OperatesFromaSingle3.3VSupply

Ter（mi）nalBlockConnectorsforEasyRS-485/RS-422Evaluation

Upto2500VRMSIsolationfor60s

FullyAssembledandTested

圖5.評估板MAXM22511EVK電路圖

評估板MAXM22511EVK材料清單：

圖6.評估板MAXM22511EVKPCB設計圖（1）：左：頂層（絲?。?右：頂層

圖7.評估板MAXM22511