Voltage LevelTranslation Guide

Auto-DirectionSensing

DirectionControlled

Application-Specific

www.ti.com/voltageleveltranslation 2011

2Translation Guide TexasInstruments2011

➔

Translation Guide

Table of Contents

OverviewIntroduction ......................................................2

Packaging........................................................3

Dual-Supply Translators FourClassesofVoltageTranslators...................................4

Auto-DirectionSensingTranslatorsPortfolio .............................4

Auto-DirectionSensingTranslators....................................5

Auto-DirectionSensingTranslatorsforOpenDrainApplications .............6

ConfigurableTranslatorswithDirectionControlPortfolio ...................7

ConfigurableUnidirectionalTranslatorsPortfolio..........................7

ConfigurableTranslatorswithDirectionControl...........................8

ConfigurableUnidirectionalTranslators................................9

ApplicationSpecificTranslators.....................................10

TranslatorNomenclature ...........................................12

SelectionTables ..................................................12

Additional TranslatorsFETSwitches....................................................14Overvoltage-TolerantDevicesandTTL-CompatibleInputsandOpen-DrainOutputDevices .........................................14

ResourcesSampleRequestsandQualityAssurance..............................15

WorldwideTechnicalSupport........................................16

Introduction Intoday’scomplexandhigh-performancesystemenvironment,higherlevelsoffunc-tionalintegrationhaveledtolowerpowerconsumptionCMOSprocesstechnologiesoperatingatlowersupplyvoltagelevels.Theabilitytomix,matchandsupportthesimultaneoususeofdifferentoperatingsupplyvoltagelevelsonthesamecircuitboardhasledtotheneedforvoltage-leveltranslation.

Toremedythisproblemoflogic-thresholdincompatibilitybetweenthedriveroutputthresholdsandreceiverinputthresholds,avoltage-leveltranslatordevicefromTexasInstrumentsshouldbeusedtoaccomplishthis.

Toassistcircuitdesignandsystemengineerswiththeiroperatingspeedandlower-operatingvoltagelevel-translationneeds,TexasInstruments(TI)offersacomprehensivevoltagetranslationportfolioincludingdual-supplyleveltranslators;auto-directionsensingtranslatorsforbothpush-pullbufferedandopen-drainap-plications;andhybridapplication-specifictranslatorsoptimizedfortoday’sconstantlyemergingsignalstandards.Translationdevicesareneededinvariousmarketssuchasconsumerelectronic,portable,computing,andnetworkingapplications—wherevertheneedexiststointerfaceloweroperatingprocessorswithhigheroperatinglegacyperipherals.

Portable Electronic Block Diagram

StereoHeadphone

Audio Subsystem(Optional)

Speaker

Microphone

AudioCodec

HapticsVibrator

3-axisAccelerometer

LightSensor

TouchScreen

Controller LCDDisplay

IC-USB

MMC

SD Card

I2S

Bluetooth®

SD CARDLevel Shifting

I2 C/S

PI

Shi

ftin

g

DisplayShifting

Base-Band SignalsLevel Shifting

SIM CardLevel Shifting

IC-USBLevel Shifting

Display Subsystem

WLANSDIO/Audio

Connectivity

DSS

I2C I2CShifting

I2C/SPI

SIM Card

ApplicationProcessor

3Translation Guide TexasInstruments2011

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0.122(3,10)

0.102(2,60)

20-ballVFBGA (ZXY)

0.102(2,60)

0.083(2,10)

12-ballUFBGA (ZXU)

0.144(3,65)

0.222(5,65)

24-pinQFN (RHL)

1.2 mm

1.8 mm

8-pinµQFN (DQM)

0.073(1,85)

0.104(2,65)

16-pinQFN (RSV)

0.144(3,65)

0.163(4,15)

16-pinQFN (RGY)

0.075(1,9)

0.035(0,9)

0.019(0,5)

8-ball NanoStar™ pkg.(YEP/YZP)

0.055(1,4)

0.035(0,9)

0.019(0,5)

6-ball NanoStar™ pkg.(YEP/YZP)

0.181(4,60)

0.398(10,10)

83-ballLFBGA (GRG)

0.220(5,60)

0.544(13,60)

96-ballLFBGA (GKE)

0.220(5,60)

0.634(16,10)

114-ballLFBGA (GKF)

0.181(4,60)

0.280(7,10)

56-ballVFBGA (GQL)

0.0748(1,9)

0.0354(0,9)

8-Pin WCSP (YZP)

0.0669(1,7)

0.0787(2,0)

12-pin(RUT)

1

2

3

4

8

7

6

5

EN

1/O

RS

T

CLK

SIM

_CLK

VC

C

VB

AT

T

VP

WR

SIM

_I/O

SIM

_RS

T

1 2 3 4 5

11

12 6

10 9 8 7

1.8 V/3 V GND Dual-Supply Translators

Packaging

Dimensionsareininches(millimeters)Packages

➔

4Translation Guide TexasInstruments2011

Dual-Supply Translators

Four Classes of Voltage Translators

TXB010x and TXB030x

Auto-direction sensing translators

VccA

Processor Peripheral

VccB

SN74AVCxT45/245/234/244 and SN74LVCxT45/245

Dual-supply configurable translators

VccA

Processor

DIR

Peripheral

VccB

TXS010x/E and TXS030x

Auto-direction sensing translators for open-drain applications

VccA

Processor Peripheral

VccB

TXS02xxx and TXS45xx

Application-specific translators (memory card and SIM card interfaces)

VccA

Processor SD/SDIOCard

VccB

4

DATA_A

CMD_A

CLK_A

4

DATA_B

CMD_B

CLK_B

Key Features

• Auto-directionsensing—nodirectioncontrolsignalneeded

• AutomaticreconfigurableI/Obuffers—eachI/Oportisconfiguredasbothaninputandanoutput

• Integratedpull-upresistors—providesmodestDC-biasandcurrentsourcingcapabilitieswhilesavingBOMcosts

• Outputslew-ratecontrolcircuitry—edge-rateacceleratorcircuitrydetectsandspeedsupAC-transitionstomaintainfastdataratethroughput

• VCCisolationfeature—ifeitherVCCinputisatGND,alloutputsareinthehighimpedancestate

• HighlyintegratedESDprotection—±15-kVESDprotectionontheBport

• DevicesendinginEsuffixincludeintegratedIEC61000-4-2ESDprotection. Auto direction-sensing translators.

TI’sauto-directionsensingtranslationdevicesareidealforpoint-to-pointtopologieswheninterfacingdevicesmaybeoperatingatdifferentinterfacevoltagelevels.Theyimproveconnectivitybetweennext-generationprocessorsandperipheraldevicesbyeliminatingtherequirementfordirection-controlsignalsusedbytraditionalvoltage-leveltranslationdevices.ThisdecreasesthecontrolsoftwarecomplexitywhilesavingvaluableGPIOsignalsoncoreprocessors.

Bit width1 42 8

3.3

1

0

2

3

4

5

2.5

1.8

1.5

1.2

0.8

Tra

nsla

tio

n vo

ltag

e ra

nge,

VC

C (V

)

TX

S01

08E

TX

B01

08

TX

S01

04E

TX

B01

04

TX

B01

06

TX

S01

02

TX

B01

02

TX

S01

01

TX

B01

01

TX

B03

04

TX

S03

02

Auto-Direction Sensing Translators Portfolio➔

➔

5Translation Guide TexasInstruments2011

Dual-Supply Translators

Auto-Direction Sensing Translators

Bidirectional Auto Direction Sensing Translators with 0.9 V Support TXB030x

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/TXB030x

Key Features• Optimizedforpush-pullapplications• Fullysymmetricsupplyvoltages:

0.9Vto3.6VonbothA-portandB-port

•VCCisolationfeature–IfeitherVCCinputisatGND,alloutputsareinthehigh-impedancestate

•OEinputcircuitreferencedtoVCCA

•Lowpowerconsumption,5-μAmaxICC

•8-kVHuman-BodyModel(HBM)

Applications• Cellphones• Tablets• PortableGPSdevices• Bluetooth®headsets• Generalportableconsumer applications

TXB030x

VCCA VCCB

Processor Peripheral

Thesenon-invertingtranslatorsusetwoseparateconfigurablepower-supplyrails.Asvoltagesignallevelscontinuetodecrease,anewsetoflow-voltage-leveltranslatorsareneeded.ThisisthereasonwhytheTXB030xfamilyoflow-voltageauto-directionsensingtranslatorsweremade.

Whentheoutput-enable(OE)inputislow,alloutputsareplacedinthehigh-impedancestate.Toensurethehigh-impedancestateduringpoweruporpowerdown,OEshouldbetiedtoGNDthroughapulldownresistor;theminimumvalueoftheresistorisdeterminedbythecurrent-sourcingcapabilityofthedriver.TheTXB030xfamilyisdesignedsothattheOEinputcircuitissuppliedbyVCCA.Thedevicesarefullyspeci-fiedforpartial-power-downapplicationsusingIoff.TheIoffcircuitrydisablestheoutputs,preventingdamagingcurrentbackflowthroughthedevicewhenitispowereddown.

Bidirectional Auto Direction Sensing TranslatorsTXB010x

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/TXB010x

Key Features• Optimizedforpush-pulldrivers• 100Mbpsmaxdataratetransfer• VCCisolationfeature• OEinputcircuitreferencedtoVCCA

• Lowpowerconsumption• IOFFsupportsoperationinpartial-

power-downmode• 1.2Vto3.6VonA-portand1.65V

to5.5VonB-port(VCCA≤VCCB)

Applications• Cellphones• SD/SDIOleveltranslation• SPIandGPIOleveltranslation

TXB010x

VCCA VCCB

Processor Peripheral

Thesenon-invertingtranslatorsusetwoseparateconfigurablepower-supplyrails.TheAportisdesignedtotrackVCCA.VCCAacceptsanysupplyvoltagefrom1.2Vto3.6V.TheBportisdesignedtotrackVCCB.VCCBacceptsanysupplyvolt-agefrom1.65Vto5.5V.Thisallowsforuniversallow-voltagebidirectionaltranslationbetweenanyofthe1.2-V,1.5-V,1.8-V,2.5-V,3.3-V,and5-Vvoltagenodes.VCCAshouldnotexceedVCCB.

Whentheoutput-enable(OE)inputislow,alloutputsareplacedinthehigh-impedancestate.Thisdeviceisfullyspecifiedforpartial-power-downapplicationsusingIoff.TheIoffcircuitrydisablestheoutputs,preventingdamagingcurrentbackflowthroughthedevicewhenitispowereddown.

Toensurethehigh-impedancestateduringpoweruporpowerdown,OEshouldbetiedtoGNDthroughapulldownresistor;theminimumvalueoftheresistorisdeter-minedbythecurrent-sourcingcapabilityofthedriver.

TXB010x functional block diagram.

TXB030x functional block diagram.

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6Translation Guide TexasInstruments2011

Dual-Supply Translators

Auto-Direction Sensing Translators for Open Drain Applications

Bidirectional Auto Direction Sensing Translators for Open Drain Applications with 0.9 V SupportTXS030x

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/TXS030x

Key Features• Optimizedforopen-drainapplications• Fullysymmetricsupplyvoltages:

0.9Vto3.6VonbothA-portandB-port

•VCCisolationfeature–ifeitherVCCinputisatGND,alloutputsareinthehigh-impedancestate

•OEinputcircuitreferencedtoVCCA

•Lowpowerconsumption,5-μAmaxICC

•8-kVHuman-BodyModel(HBM)

Applications• Cellphones• Tablets• PortableGPSdevices• Bluetooth®headsets• Generalportableconsumer applications

Thesetwo-bitnon-invertingtranslatorsusestwoseparateconfigurablepower-supplyrails.TheAportisdesignedtotrackVCCA.VCCAacceptsanysupplyvoltagefrom0.9Vto3.6V.TheBportisdesignedtotrackVCCB.VCCBacceptsanysupplyvoltagefrom0.9Vto3.6V.Thisallowsforlow-voltagebidirectionaltranslationbetween1-V,1.2-V,1.5-V,1.8-V,2.5-Vand3.3-Vvoltagenodes.

FortheTXS0302,whentheoutput-enable(OE)inputislow,alloutputsareplacedinthehigh-impedancestate.Toensurethehighimpedancestateduringpoweruporpowerdown,OEshouldbetiedtoGNDthroughapulldownresistor;theminimumvalueoftheresistorisdeterminedbythecurrent-sourcingcapabilityofthedriver.TheTXS0302isdesignedsothattheOEinputcircuitissuppliedbyVCCA.Thisdeviceisfullyspeci-fiedforpartial-power-downapplicationsusingIoff.TheIoffcircuitrydisablestheoutputs,preventingdamagingcurrentbackflowthroughthedevicewhenitispowereddown.

Bidirectional Auto Direction Sensing Translators for Open Drain ApplicationsTXS010x

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/TXS010x

Key Features• Workswithbothopen-drainand

push-pulldrivers• Maxdatarates:

24Mbps(push-pull)2Mbps(open-drain)

• 1.65Vto3.6VonA-portand2.3Vto5.5VonB-port(VCCA≤VCCB)

• Nopowersupplysequencingrequired• IEC61000-4-2ESDprotectionon

B-portfor“E”suffixdevices

Applications• Cellphones• I2Cleveltranslation• MMCandSIMcardleveltranslations

TXS010x

VCCA VCCB

Processor Peripheral

Thesenon-invertingtranslatorsusetwoseparateconfigurablepower-supplyrails.TheAportisdesignedtotrackVCCA.VCCAacceptsanysupplyvoltagefrom1.65Vto3.6V.TheBportisdesignedtotrackVCCB.VCCAmustbelessthanorequaltoVCCB.VCCBacceptsanysupplyvoltagefrom2.3Vto5.5V.Thisallowsforlow-voltagebidirectionaltranslationbetweenanyofthe1.8-V,2.5-V,3.3-V,and5-Vvoltagenodes.

Whentheoutput-enable(OE)inputislow,alloutputsareplacedinthehigh-impedancestate.Toensurethehigh-impedancestateduringpoweruporpowerdown,OEshouldbetiedtoGNDthroughapulldownresistor;theminimumvalueoftheresistorisdeter-minedbythecurrent-sourcingcapabilityofthedriver.

TXS010x functional block diagram.

TXS030x

VCCA VCCB

Processor Peripheral

TXS030x functional block diagram.

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7Translation Guide TexasInstruments2011

Dual-Supply Translators

Configurable Translators with Direction Control Portfolio

TItranslatorswithdirectioncontrolaredesignedforasynchronouscommunicationbetweentwobusesordevicesoperatingatdifferentsupplyvoltages:VCCAtointerfacewiththeAsideandVCCBtointerfacewiththeBside.Thesedevicesareavailableinavarietyofbitwidthsandcovernearlyeverysupply-voltagenodeinusetoday.Theyareflexible,easytouseandcantranslatebidirectionally(up-translateanddown-translate),whichmakesthemanidealchoiceformostlevel-translationapplications.

Direction-control translators.Bit width

1 42 8 16 32

3.3

1

0

2

3

4

5

2.5

1.8

1.5

1.2

0.8

Sup

ply

vo

ltag

e, V

CC

(V)

LVC

16T

245

AV

C16

T24

5

20

AV

C20

T24

5

24

AV

C24

T24

5

AV

C32

T24

5

LVC

1T45

AV

C1T

45

AV

C2T

45A

VC

2T24

5

AV

C4T

245

AV

C4T

774

LVC

8T24

5A

VC

8T24

5

LVC

2T45

Key Features• Fullyconfigurablerails—eachVCC

railisfullyconfigurablefrom1.2Vto3.6V(AVCxTdevices)andfrom1.65Vto5.5V(LVCxTdevices)

• Nopower-upsequencing—eitherVCCcanbepoweredupfirst(AVCxTandLVCxTdevicesonly)

• Standbymode—whenoneVCCisswitchedoff,allI/OportsareplacedintheHiZmode(AVCxTandLVCxTdevicesonly).

Configurable Unidirectional Translators Portfolio➔

TIunidirectionaltranslatorsaredesignedforasynchronouscommunicationbetweenB-portinputsandA-portoutputsoperatingatdifferentsupplyvoltages:VCCAtointerfacewiththeAsideandVCCBtointerfacewiththeBside.Thesedevicescoverthemostadvanced(1.0Vand1.2V)supply-voltagenodesinusetodayandarefullyconfigurablefrom0.9Vto3.6VonbothA-portandB-portsides.ThesedevicesarefullyspecifiedforpartialpowerdownapplicationsanduseIoffcircuitrythatpreventsdamagingcurrentbackflowinpower-downmode.Thesefeaturesmakethesetranslatorsanidealchoiceforbatterypoweredportableelectronicsapplications.

Bit width1 42 8

3.6

1

0

2

3

4

2.5

1.8

1.5

1.2

0.9Sup

ply

vo

ltag

e, V

CC

(V)

AV

C4T

234

AV

C2T

244

Key Features• Unidirectionalarchitectureeliminates

thedirectioncontrolpinsavingpre-ciousGPIOpinsontheprocessor

• Fullyconfigurablerailsfrom0.9Vto3.6Venablesupportof1.0Vnodesusedbythemostadvancedprocessors

• Ioffcircuitrypreventsdamagingcur-rentbackflowinpower-downmode

➔

8Translation Guide TexasInstruments2011

Dual-Supply Translators

Configurable Translators with Direction Control

Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State OutputsSN74AVCxT45/245

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/SN74AVCxT45/245

Key Features• 380Mbpsmaxdatarate• Controlinputlevels,VIH/VIL,are

referencedtoVCCAvoltage• Fullyconfigurabledual-raildesign

allowseachporttooperateoverfull1.2-Vto3.6-Vpower-supplyrange

• IOFFsupportsoperationinpartial-power-downmode

Applications• Handsets• PDAs• Computing• Smartphones SN74AVCxT45/245 functional block diagram.

SN74AVCxT45/245

DIR

VCCA VCCB

Processor Peripheral

Thesedevicesaredesignedforasynchronouscommunicationbetweendatabuses.ThedevicestransmitdatafromtheAbustotheBbusorfromtheBbustotheAbus,dependingonthelogiclevelatthedirection-control(DIR)input.

Dual-Supply Bus Transceiver with Configurable Voltage Translation and 3-State OutputsSN74LVCxT45/245

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/SN74LVCxT45/245

Key Features• Controlinputlevels,VIH/VIL,are

referencedtoVCCAvoltage• Fullyconfigurabledual-raildesign

allowseachporttooperateoverfull1.65-Vto5.5-Vpower-supplyrange

• IOFFsupportsoperationinpartial-power-downmode

Applications• Portables• Telecom• Computing• Translationfrom3.3Vto5V

SN74LVCxT45/245 functional block diagram.

SN74LVCxT45/245

DIR

VCCA VCCB

Processor Peripheral

Thesedevicesarefullyspecifiedforpartial-power-downapplicationsusingIoff.TheIoffcircuitrydisablestheoutputs,preventingdamagingcurrentbackflowthroughthedevicewhenitispowereddown.

TheVCCisolationfeatureensuresthatifeitherVCCinputisatGND,thenbothportsareinthehigh-impedancestate.Toensurethehigh-impedancestateduringpoweruporpowerdown,OEshouldbetiedtoVCCthroughapullupresistor;theminimumvalueoftheresistorisdeterminedbythecurrent-sinkingcapabilityofthedriver.

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9Translation Guide TexasInstruments2011

Dual-Supply Translators

Configurable Unidirectional Translators

4-Bit, Dual-Supply, Non-Inverting Bus TranslatorSN74AVC4T234

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/SN74AVC4T234

Key Features• 380Mbpsmaxdatarate• WideoperatingVCCrangeof1.2V

to3.6V• 3.6-VI/Otoleranttosupportmixed-

modesignaloperation• Input-disablefeatureallowsfloating

inputconditions•Inputhysteresisallowsslowinput

transitionandbetterswitchingnoiseimmunityatinput

Applications• Handsets• PDAs• Computing• Smartphones

Logic diagram (positive logic).

B1

B2

B3

B4

A1

A2

A3

A4

VCCAVCCB

Logic Diagram (Positive Logic)

This4-bitnon-invertingbustransceiverusestwoseparateconfigurablepower-supplyrailstoenableasynchronouscommunicationbetweenB-portinputsandA-portoutputs.TheAportisdesignedtotrackVCCAwhiletheBportisdesignedtotrackVCCB.BothVCCAandVCCBareconfigurablefrom1.2Vto3.6V.TheSN74AVC4T234solutionofferstheindustry’slow-powerneedsinbattery-poweredportableapplicationsbyensuringbothaverylowstaticanddynamicpowerconsumptionacrosstheentireVCCrangeof1.2Vto3.6V,resultinginanincreasedbatterylife.Thisproductalsomaintainsexcellentsignalintegrity.Thisdeviceisfullyspecifiedforpartial-power-downapplicationsusingIoff.TheIoffcircuitrydisablestheoutputs,preventingdamagingcurrentbackflowthroughthedevicewhenitispowereddown.TheVCCisolationfeatureensuresthatifeitherVCCinputisatGND,thenA-sideportsareinthehigh-impedancestate.

2-Bit, Dual-Supply, Unidirectional Translator with Output Enable SN74AVC2T244

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/SN74AVC2T244

Key Features• WideoperatingVCCrangeof0.9V

to3.6V• Outputenablepinallowsuserto

disableoutputstoreducepowerconsumption

• 380Mbpsmaxdatarate• Inputhysteresisallowsslowinput

transitionandbetterswitchingnoiseimmunityatinput

• 4.5VtolerantI/Otosupportmixedsignalmodeoperation

Applications• Handsets• PDAs• Computing• Smartphones

This2-bitunidirectionaltranslatorusestwoseparateconfigurablepower-supplyrailstoenableasynchronouscommunicationbetweenB-portinputsandA-portoutputs.TheAportisdesignedtotrackVCCAwhiletheBportisdesignedtotrackVCCB.BothVCCA

andVCCBareconfigurablefrom0.9Vto3.6V.TheSN74AVC2T244offersanoutputenablepintodisableoutputsthatreducespowerconsumptionsignificantlyinpowerdownmode.ItoffersverylowstaticanddynamicpowerconsumptionacrosstheentireVCCrangeof0.9Vto3.6V,makingittheidealtranslatorforbatterypoweredportableelectronicsapplications.

3.3V

1.0V

Only need single direction since it is a control input

3.3V

Processor

PeripheralAVC2T244 Control Input

PeripheralControl Input

SN74AVC2T244 functional block diagram.

➔

10Translation Guide TexasInstruments2011

Dual-Supply Translators

Application Specific Translators

Interchip USB Voltage Level TranslatorTXS0202

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/TXS0202

Key Features• Auto-directionsensingtranslator• Voltagerangeof1.65-3.6V• Ioffsupportspartial-power-down

modeoperation• Activelydetectsthestatusofthe

hostandperipheralandwilldeterminewhichofthefourvariousmodesisdesired

• Nodirectionsignalcontrolneeded• Workswithlegacytonext-genera-

tionprocessorsandperipherals• Thisisdonewithoutanyneedfor

directioncontrol,externalFETs,orexternalpullupresistors

Applications• Handsets

SmartphoneMultimediaFeature

• Tablet• Portablegamingdevices

TXS0202

1.8 V 3 V

ApplicationProcessor

MM SIMcard

D+D+

VCCBVCCA

D+(A) D+(B)

D-(B)D-(A)

GNDOE

D-D-

TXS020x functional block diagram.

TheTXS0202isatwo-bitvoltageleveltranslatoroptimizedforuseinInterchipUSB(IC-USB)applications.VCCAandVCCBcaneachoperateoverthefullrangeof1.65Vto3.6V.Thedevicehasbeendesignedtomaintaincross-overskewtobelessthan1ns.Thedevicehasintegratedpull-upsandpull-downresistorstoaidintheprotocolcom-municationbetweenahostandaperipheral.Thetranslatorisabufferedauto-directionsensingtypetranslator.Whentheoutput-enable(OE)inputislow,alloutputsareplacedinthehigh-impedancestate.

SD Card, Memory Stick, and MMC Voltage-Translation Transceivers with ESD Protection and EMI FilteringTXS0206 and TXS0206-29

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/TXS0206; www.ti.com/product/TXS0206-29

Key Features• Voltage-translationtransceiverfor

memorycardinterfaces(SD,MiniSD,MMC)

• Fullyconfigurabledual-voltagesupplyarchitecturewithbothVCCAandVCCBoperatingrangeof1.1Vto3.6V

• Sixbidirectionalchannelscapableofpassing60Mbpsdatarateswith3nstypicalprop-delay

• Nodirectioncontrolneededondata/commandpaths

• Integratedpull-upresistorsoncard-sideI/OsperSDspecification

•SDIO-compliantintegratedsmartpull-upresistors—enablesoutputdriverstomaintainmodestDC-biascurrentsourcingcapabilitieswhilemaintaininglowstaticpowerconsumption

TXS0206 functional block diagram.

TXS0206

VCCA VCCB

Processor SD/SDIOcard

CLK_A CLK_B

CMD_A CMD_B

DATA_A DATA_B4 4

Applications• Mobilephones• PDAs• Digitalcameras

• Personalmediaplayers• Camcorders• Set-topboxes

Memorycardstandardsrecommendhigh-ESDprotectionfordevicesthatconnectdirectlytotheexternalmemorycard.Tomeetthisneed,thesedevicesincorporate±8-kVContactDischargeprotectiononthecardside.

➔

11Translation Guide TexasInstruments2011

Dual-Supply Translators

Application Specific Translators

Dual-supply SIM Card Translator and 2:1 Multiplexer TXS02326

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/TXS02326

Key Features• Dual-supplytranslatorwithvoltage

rangeof1.7Vto3.6V• 2:1multiplexerfunctionenablesthe

useofasingleSIMcardinterfacetocontroltwoSIMcards

• Integrateddual-LDOsenablesup-portof1.8Vand2.95VSIMcardstandards

• Availableinpopular24-pinQFNpackage

Applications• Cellphones

TheTXS02326isadual-supplySIMcardsolutionforinterfacingwirelessbase-bandprocessorswithtwoSIMcards.The2:1multiplexerfunctionextendsthesingleSIMcardinterfacetosupporttwoSIMcards.Thedual-supplyvoltagetranslationfunctionsupports1.7Vto3.3Vrangeontheprocessorsideandeither1.8Vor2.95VontheSIMcardside.ThetwoSIMcardinterfacestandards,Class-B(2.95V)andClass-C(1.8V)aresupportedbytwointegratedlow-dropout(LDO)voltageregulatorswithselectableoutputs.Anintegrated400kb/sI2Cinterfaceoffersseveralconfigurationoptions,includingsafepower-downofthetwoSIMcards.

1.8 V and 3 V SIM Card Power Supply and Voltage Translator TXS4555

Getsamples,datasheets,EVMsandappreportsat:www.ti.com/product/TXS4555

Key Features• Dual-supplytranslatorwithvoltage

rangeof1.65Vto3.3V• IntegratedLDOacceptsbattery

voltagefrom2.3Vto5.5Vandgenerates1.8Vor2.95Voutput

• Propershutdownsequencepre-ventsdatacorruptionincaseofaccidentalphoneshutdown

• Availableintiny16-pin(9mm2)and12-pin(3.5mm2)QFNpackages

Applications• Cellphones

TheTXS4555isadual-supplySIMcardsolutionforinterfacingawirelessbase-bandprocessorwithanyClass-B(2.95V)orClass-C(1.8V)SIMcard.Thedual-supplyvoltagetranslationfunctionsupports1.65Vto3.3Vrangeontheproces-sorsideandacceptsanybatteryvoltagebetween2.3Vand5.5Vtogenerateaconstant1.8Vor2.95VoutputontheSIMcardside.Adedicatedlow-dropout(LDO)voltageregulatorwithselectableoutputisusedtogeneratethedesiredSIMcardvoltage.PropershutdownsequencefortheSIMcardsignalshelpsinpreven-tionofcorruptionofdataduringaccidentalshutdownofthephone.

Baseband

SIM_RST

SIM_CLK

SIM_I/O

VCC

Reset

CLK

NC

GND

VPP

I/O

NC

3-V or 1.8-VSIM Card

VBAT

V_I/O

VCC

Reset

CLK

NC

GND

VPP

I/O

NC

3-V or 1.8-VSIM Card

TXS02326

LDO

Translator

Translator

VCC

LDO

I CControlLogic

2

SDA

SCK

IRQ

RSTX

VSIM1

SIM1_RST

SIM1_CLK

SIM1_I/O

VSIM2

SIM2_RST

SIM2_CLK

SIM2_I/OOE

CLK

SDN

BSI

GND

Baseband

Translator

LDO

Reset

CLK

I/O

Core SupplyVCC (1.65 to 3.3 V)

VBATT

(2.3 to 5.5 V)

Vcc

RST

CLK

NC

Vpp

I/O

NC

GND

2.95 V or 1.8 V,50 mA

Interfacing with SIM card.

Interfacing with SIM card.

➔

12Translation Guide TexasInstruments2011

Dual-Supply Translators

Translator Nomenclature

1Bus-hold option available

VCC Min. to Max. (V) VCCA (V) VCCB (V)

Device VCCA VCCB 0.9 1.2 1.5 1.65 1.8 2.5 2.7 3.3 5 0.9 1.2 1.5 1.65 1.8 2.5 2.7 3.3 5 Smallest package

Application Specific

CF4320H 1.65 to VCCB 3 to 5.5 4 4 4 4 4 4 4 114-ball LFBGA

SN74AVCA406L 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 20-ball VFBGA

SN74AVC2T872 1.1 to 3.6 1.1 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 12-ball WCSP

SN74AVC6T622 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 20-ball UFBGA

TWL1200 1.1 to 3.6 1.1 to 3.6 4 4 4 4 4 4 4 4 4 4 4 YFF

TXS0202 1.65 to 3.6 1.65 to 3.6 4 4 4 4 4 4 4 4 4 4 YZP

TXS0206 1.1 to 3.6 1.1 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 20-ball WCSP

TXS0206-29 1.1 to 3.6 5V Max VBAT 4 4 4 4 4 4 YFP

TXS02612 1.1 to 3.6 1.1 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 24-ball VFBGA

Application Specific: SIM Card Translators

TXS4555 1.65 to 3.3 2.3 to 5.5 4 4 4 4 4 4 2.95 RUT

TXS02326 1.7 to 3.3 2.3 to 5.5 4 4 4 4 2.95 RGE

TXS02326A 1.7 to 3.3 2.3 to 5.5 4 4 4 4 2.95 RGE

TXS02324 1.7 to 3.3 2.3 to 5.5 4 4 4 4 2.95 RUK

TXS4558 1.7 to 3.3 2.3 to 5.5 4 4 4 4 4 2.95 RUT

Preview products are listed in bold blue.

➔ Selection Tables

Translator nomenclature TX S 01 04 E RGY RPrefix: TX=TItranslator

Device type: S=Switch,B=Buffer

Grade

Bit width

ESD protection: E=IECLevel4

TI package designator

Tape and reel: Rornone=Standardreel,T=Smallreel

Translator nomenclature SN74 AVC 20 T 245 DGV RTI prefix:

Technology family: AHC,AHCT,AVC,AUC,CBT,CBTD,CB3T,HCT,LVC,TVC

Bit width

Device type: T=Translation

Function identifier

TI package designator

Tape and reel: Rornone=Standardreel,T=Smallreel

➔

13Translation Guide TexasInstruments2011

Dual-Supply Translators

Selection Tables (Continued)

1Bus-hold option available Preview products are listed in bold blue.

VCC Min. to Max. (V) VCCA (V) VCCB (V)

Device VCCA VCCB 0.9 1.2 1.5 1.65 1.8 2.5 2.7 3.3 5 0.9 1.2 1.5 1.65 1.8 2.5 2.7 3.3 5Smallest package

1-Bit

SN74AVC1T451 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 6-ball NanoStar™/NanoFree™

SN74LVC1T45 1.65 to 5.5 1.65 to 5.5 4 4 4 4 4 4 4 4 4 4 6-ball NanoStar/NanoFree

TXB0101 1.2 to 3.6 1.65 to 5.5 4 4 4 4 4 4 4 4 4 4 4 6-ball NanoFree

TXS0101 1.65 to 3.6 2.3 to 5.5 4 4 4 4 4 4 4 4 6-ball NanoFree

2-Bit

SN74AVC2T451 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 8-ball NanoStar/NanoFree

SN74AVC2T244 0.9 to 3.6 0.9 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 8-pin µQFN

SN74LVC2T45 1.65 to 5.5 1.65 to 5.5 4 4 4 4 4 4 4 4 4 4 8-ball NanoStar/NanoFree

SN74LVC2T245 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 10-pin QFN

TXB0102 1.2 to 3.6 1.65 to 5.5 4 4 4 4 4 4 4 4 4 4 4 8-ball NanoFree

TXB0302 0.9 to 3.6 0.9 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 4 4 RGE

TXS0102 1.65 to 3.6 2.3 to 5.5 4 4 4 4 4 4 4 4 8-ball NanoFree

TXS0302 0.9 to 3.6 0.9 to 3.6 4 4 4 4 4 4 4 4 4 4 8-pin, YFP, DQE and DQM

4-Bit

SN74AVC4T234 1.1 to 3.6 1.1 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 ZSU

SN74AVC4T2451 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 16-pin QFN

SN74AVC4T774 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 16-pin QFN

TXB0104 1.2 to 3.6 1.65 to 5.5 4 4 4 4 4 4 4 4 4 4 4 12-ball UFBGA

TXB0304 0.9 to 3.6 0.9 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 4 4 RSV

TXS0104E 1.65 to 3.6 2.3 to 5.5 4 4 4 4 4 4 4 4 12-ball UFBGA

6-Bit

TXB0106 1.2 to 3.6 1.65 to 5.5 4 4 4 4 4 4 4 4 4 4 4 16-pin QFN

8-Bit

SN74AVC8T2451 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 24-pin QFN

SN74LVC8T2451 1.65 to 5.5 1.65 to 5.5 4 4 4 4 4 4 4 4 4 4 24-pin QFN

TXB0108 1.2 to 3.6 1.65 to 5.5 4 4 4 4 4 4 4 4 4 4 4 20-ball VFBGA

TXS0108E 1.65 to 3.6 2.3 to 5.5 4 4 4 4 4 4 4 4 20-ball VFBGA

16-Bit

SN74AVC16T2451 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 56-ball VFBGA

SN74LVC16T2451 1.65 to 5.5 1.65 to 5.5 4 4 4 4 4 4 4 4 4 4 56-ball VFBGA

20-Bit

SN74AVC20T2451 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 56-ball VFBGA

24-Bit

SN74AVC24T2451 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4 4 4 4 4 4 4 83-ball LFBGA

32-Bit

SN74AVC32T2451 1.2 to 3.6 1.2 to 3.6 4 4 4 4 4 4   4 4 4 4 4 4   96-ball LFBGA

14Translation Guide TexasInstruments2011

➔

Additional Translators

FET Switches

DevicesfromTI’sCBT,CBTD,CB3TandTVCfamiliescanbeusedinlevel-translationapplications.ThediagramshowsaCB3Tbusswitchinterfacinga3-Vbuswitha5-V(TTL)bus.TheCB3Tdevicedown-translatesthesignalsfromthe5-Vbusto3-Vlevels.

Notranslationisnecessarytotransfersignalsfromthe3-Vbustothe5-V(TTL)bus,sincetheVOHlevelfromtheCB3TswitchisgreaterthantherequiredVILofthe5-V(TTL)devicesconnectedtothe5-Vbus.

Advantage• Fastpropagationdelays

FET switch for translation.

5-V (TTL)memory

3-Vmemory

5-V (TTL)I/O

3-V CPU

3 V5 V

3 V 5 V (TTL)

CB3Tbus switch

5-V

(TT

L) s

yste

m b

us

3-V

sys

tem

bus

➔ Overvoltage-Tolerant Devices and TTL-Compatible Inputs and Open-Drain Output Devices

Overvoltage-Tolerant Devices

Deviceswithovervoltage-tolerantinputscanbeusedtoperformdown-translationasshowninthediagram.Logicfamilieswithovervoltage-tolerantinputsinclude:• AHC • LV-A• AUC • LVC• AVC

Devices with TTL-Compatible Inputs

Up-translationfrom3.3-VLVCMOS/LVTTLto5-VCMOSlevelscanbeachievedwithlogicdevicesfromTI’sHCT,AHCT,ACTandAUPfamilies.

Devices with Open-Drain Outputs

Deviceswithopen-drainoutputscanbeusedtoperformbothup-translationanddown-translation.TheoutputvoltageisdeterminedbyVCCB.ThisoutputlevelcanbehigherthanVCCA(up-translation)orlowerthanVCCA(down-translation).

Advantages• Onlyonesupplyvoltageneeded• BroadportfolioofAHC,AUC,AVC,

LV-AandLVCdevices

0 V

5 V

0 V

3.3 V

Vcc = 3.3 V

SN74LVC244A

Down-translation.

Advantages• Onlyonesupplyvoltageneeded• BroadportfolioofHCT,AHCT,ACT

andAUPdevices

0 V

5 V

0 V

3.3 V

SN74LV244AT

Vcc = 5 V

TTL up-translation.

Advantages• Flexibilityintranslatingto/froma

varietyofvoltagenodes

RPullupRequired input leveldepends on VCCA Output level

depends onVCCB

VCCBVCCA

T1

Translation with open-drain buffers.

15Translation Guide TexasInstruments2011

➔

Resources

Sample Requests and Quality Assurance

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