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READY

C1+

V+

C1−

C2+

C2−

V−

DOUT2

RIN2

ROUT2

FORCEOFF

V

CC

GND

DOUT1

RIN1

ROUT1

FORCEON

DIN1

DIN2

INVALID

DB OR PW PACKAGE

(TOP VIEW)

MAX3318

www.ti.com

SLLS687A–OCTOBER2005–REVISEDOCTOBER2013

2.5-V460-kbpsRS-232TRANSCEIVER

WITH±15-kVESDPROTECTION

CheckforSamples:MAX3318

1

FEATURES

DESCRIPTION

TheMAX3318isadual-driver,dual-receiver,RS-232

•ESDProtectionforRS-232I/OPins

compatibletransceiver.Thedevicefeaturesauto-

–±15kV(Human-BodyModel)

power-downplusandenhancedelectrostatic

–±8kV(IEC61000-4-2,ContactDischarge)

discharge(ESD)protectionintegratedintothechip.

Driveroutputandreceiverinputareprotectedto±8

–±8kV(IEC61000-4-2,Air-GapDischarge)

kVusingtheIEC61000-4-2Air-GapDischarge

•300-μAOperatingSupplyCurrent

method,±8kVusingtheIEC61000-4-2Contact

•1-μALow-PowerStandby(WithReceivers

Dischargemethod,and±15kVusingtheHuman-

Active)Mode

BodyModel(HBM).

•DesignedtoTransmitataDataRateof

Thedeviceoperatesatadatarateof460kbps.The

460kbps

transceiverhasaproprietarylow-dropoutdriver

outputstageenablingRS-232-compatibleoperation

•Auto-Power-DownPlusOptionFeatures

froma2.25-Vto3-Vsupplywithadualchargepump.

FlexiblePower-SavingMode

Thechargepumprequiresonlyfour0.1-μF

•OperatesFromaSingle2.25-Vto3-VV

CC

capacitorsandfeaturesalogic-leveloutput(READY)

Supply

thatassertswhenthechargepumpisregulatingand

thedeviceisreadytobegintransmitting.

APPLICATIONS

TheMAX3318achievesa1-μAsupplycurrentusing

•Battery-PoweredSystems

theauto-power-downfeature.Thisdevice

•PDAs

automaticallyentersalow-powerpower-downmode

whentheRS-232cableisdisconnectedorthedrivers

•CellularPhones

oftheconnectedperipheralsareinactiveformore

•Notebooks

than30s.Thedeviceturnsonagainwhenitsenses

•Hand-HeldEquipment

avalidtransitionatanydriverorreceiverinput.Auto

powerdownsavespowerwithoutchangestothe

•Pagers

existingBIOSoroperatingsystem.

Thisdeviceisavailableintwospace-saving

packages:20-pinSSOPand20-pinTSSOP.

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Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof

TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.

PRODUCTIONDATAinformationiscurrentasofpublicationdate.

Copyright©2005–2013,TexasInstrumentsIncorporated

ProductsconformtospecificationsperthetermsoftheTexas

Instrumentsstandardwarranty.Productionprocessingdoesnot

necessarilyincludetestingofallparameters.

Produktspecifikationer