Texas Instruments MAX3227E Bedienungsanleitung

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FEATURESAPPLICATIONS

DB PACKAGE

(TOP VIEW)

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16

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READY

C1+

V+

C1−

C2+

C2−

V−

RIN

FORCEOFF

V

CC

GND

DOUT

FORCEON

DIN

INVALID

ROUT

DESCRIPTION/ORDERINGINFORMATION

MAX3227E

3-VTO5.5-VSINGLE-CHANNELRS-232LINEDRIVER/RECEIVER

WITH±15-kVIECESDPROTECTION

SLLS715A–FEBRUARY2006–REVISEDJUNE2007

•Battery-Powered,Hand-Held,andPortable

•MeetsorExceedstheRequirementsof

Equipment

TIA/EIA-232-FandITUv.28Standards

•PDAsandPalmtopPCs

•OperatesWith3-Vto5.5-VV

CC

Supply

•Notebooks,Sub-Notebooks,andLaptops

•OperatesatLeast1Mbit/s

•DigitalCameras

•LowStandbyCurrent...1μATyp

•MobilePhonesandWirelessDevices

•ExternalCapacitors...4×0.1μF

•Accepts5-VLogicInputWith3.3-VSupply

•DesignedtoBeInterchangeableWithMaxim™

MAX3227E

•Latch-UpPerformanceExceeds100mAPer

JESD78,ClassII

•ESDProtectionforRS-232I/OPins

–±15kV–Human-BodyModel

–±8kV–IEC61000-4-2,ContactDischarge

–±15kV–IEC61000-4-2,Air-GapDischarge

•Auto-PowerdownPlusFeatureAutomatically

DisablesDriversforPowerSavings

•PackagedinPlasticShrinkSmall-Outline

Package

TheMAX3227Econsistsofonelinedriver,onelinereceiver,andadualcharge-pumpcircuitwith±15-kVIEC

ESDprotectionpintopin(serial-portconnectionpins,includingGND).Thedevicemeetstherequirementsof

TIA/EIA-232-Fandprovidestheelectricalinterfacebetweenanasynchronouscommunicationcontrollerandthe

serial-portconnector.Thechargepumpandfoursmallexternalcapacitorsallowoperationfromasingle3-Vto

5.5-Vsupply.Thisdeviceoperatesatdata-signalingratesof1Mbit/sinnormaloperatingmodeandamaximum

of30-V/μsdriveroutputslewrate.Thisdevicealsofeaturesalogic-leveloutput(READY)thatassertswhenthe

chargepumpisregulatingandthedeviceisreadytobegintransmitting.

TheMAX3227Eachievesa1-μAsupplycurrentusingtheauto-powerdownplusfeature.Thisdevice

automaticallyentersalow-powerpowerdownmodewhentheRS-232cableisdisconnectedorthedriversofthe

connectedperipheralsareinactiveformorethan30s.Theyturnonagainwhentheysenseavalidtransitionat

anydriverorreceiverinput.Auto-powerdownsavespowerwithoutchangestotheexistingBIOSoroperating

system.

TheMAX3227ECischaracterizedforoperationfrom0°Cto70°C.TheMAX3227EIischaracterizedfor

operationfrom–40°Cto85°C.

ORDERINGINFORMATION

T

A

PACKAGE

(1)(2)

ORDERABLEPARTNUMBERTOP-SIDEMARKING

Tubeof80MAX3227ECDB

0°Cto70°CSSOP–DBMP227EC

Reelof2000MAX3227ECDBR

Tubeof80MAX3227EIDB

–40°Cto85°CSSOP–DBMP227EI

Reelof2000MAX3227EIDBR

(1)Packagedrawings,standardpackingquantities,thermaldata,symbolization,andPCBdesignguidelinesareavailableat

www.ti.com/sc/package.

(2)Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orseetheTI

websiteatwww.ti.com.

Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas

Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

Alltrademarksarethepropertyoftheirrespectiveowners.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2006–2007,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspezifikationen