Texas Instruments MAX3222 Bruksanvisning

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DIN2

DOUT2

128

Powerdown

RIN1

16

20

15

PWRDOWN

ROUT1

DIN1

DOUT1

1317

RIN2

910

ROUT2

1

EN

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AnIMPORTANTNOTICEattheendofthisdatasheetaddressesavailability,warranty,changes,useinsafety-criticalapplications,

intellectualpropertymattersandotherimportantdisclaimers.PRODUCTIONDATA.

MAX3222

SLLS408H–JANUARY2000–REVISEDOCTOBER2016

MAX32223-Vto5.5-VMultichannelRS-232LineDriverandReceiverWith±15-kVESD

Protection

1

1Features

1

•RS-232Bus-PinESDProtectionExceeds±15kV

UsingHuman-BodyModel(HBM)

•MeetsorExceedstheRequirementsof

TIA/EIA-232-FandITUv.28Standards

•OperatesWith3-Vto5.5-VV

CC

Supply

•OperatesUpto250kbps

•TwoDriversandTwoReceivers

•LowStandbyCurrent:1µATypical

•ExternalCapacitors:4×0.1µF

•Accepts5-VLogicInputWith3.3-VSupply

•AlternativeHigh-SpeedPin-CompatibleDevice

(1Mbps)

–SNx5C3222

2Applications

•Battery-PoweredSystems

•PDAs

•Notebooks

•Laptops

•PalmtopPCs

•Hand-heldEquipment

3Description

TheMAX3222consistsoftwolinedrivers,twoline

receivers,andadualcharge-pumpcircuitwith±15-kV

ESDprotectionpintopin(serial-portconnectionpins,

includingGND).Thedevicemeetstherequirements

ofTIA/EIA-232-Fandprovidestheelectricalinterface

betweenanasynchronouscommunicationcontroller

andtheserial-portconnector.Thechargepumpand

foursmallexternalcapacitorsallowoperationfroma

single3-Vto5.5-Vsupply.Thedeviceoperatesat

datasignalingratesupto250kbit/sandamaximum

of30-V/μsdriveroutputslewrate.

TheMAX3222canbeplacedinthepower-down

modebysettingPWRDOWNlow,whichdrawsonly1

μAfromthepowersupply.Whenthedeviceis

powereddown,thereceiversremainactivewhilethe

driversareplacedinthehigh-impedancestate.

Receiveroutputsalsocanbeplacedinthehigh-

impedancestatebysettingENhigh.

DeviceInformation

(1)

PARTNUMBERPACKAGEBODYSIZE(NOM)

MAX3222CDW,

MAX322IDW

SOIC(20)12.80mm×7.50mm

MAX3222CDB,

MAX322IDB

SSOP(20)7.20mm×5.30mm

MAX3222CPW,

MAX322IPW

TSSOP(20)6.50mm×4.40mm

(1)Forallavailablepackages,seetheorderableaddendumat

theendofthedatasheet.

BlockDiagram

Produktspecifikationer