54ABT244_13 TI1 | Alldatasheet
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www.ti.com SNOS041B –JULY 1998–REVISED APRIL 2013 54ABT244OctalBuffer/LineDriverwithTRI-STATEOutputs Check forSamples: 54ABT244 1FEATURES DESCRIPTION The 'ABT244 isan octalbufferand linedriverwith 2• Non-InvertingBuffers TRI-STATE outputsdesignedto be employed as a• Output Sink Capabilityof48 mA, Source memory and address driver,clockdriver,or bus-Capabilityof24 mA orientedtransmitter/receiver.
- Output SwitchingSpecifiedforBoth 50 pF and 250 pF Loads
- Ensured Simultaneous Switching,Noise Level and Dynamic ThresholdPerformance
- Ensured Latchup Protection
- High Impedance GlitchFree Bus Loading duringEntirePower Up and Power Down Cycle
- NondestructiveHot InsertionCapability
- DisableTime Less than Enable Time toAvoid Bus Contention
- Standard MicrocircuitDrawing (SMD) 5962- 9214701 CONNECTION DIAGRAMS Figure1.Pin Assignment forCDIP, Figure2.Pin Assignment forLCCC and CLGA, See Package Number NAJ See Package Number J,and NAF Pin Names Description OE 1,OE 2 OutputEnableInput(ActiveLow) I0–I7 Inputs O 0–O 7 Outputs Pleasebe aware thatan importantnoticeconcerningavailability,standardwarranty,and use incriticalapplicationsof Texas Instrumentssemiconductorproductsand disclaimerstheretoappearsattheend ofthisdatasheet. 2Alltrademarksarethepropertyoftheirrespectiveowners. PRODUCTION DATA informationiscurrentas ofpublicationdate. Copyright© 1998–2013,Texas InstrumentsIncorporatedProductsconform to specificationsper the terms of the Texas Instrumentsstandardwarranty.Productionprocessingdoes not necessarilyincludetestingofallparameters.
SNOS041B –JULY 1998–REVISED APRIL 2013 www.ti.com TRUTH TABLE (1) OE 1 I0–3 O 0–3 OE 2 I4–7 O 4–7 H X Z H X Z L H H L H H L L L L L L (1) H = HIGH VoltageLevel L = LOW VoltageLevel X = Immaterial Z = HighImpedance These deviceshave limitedbuilt-inESD protection.The leadsshouldbe shortedtogetherorthedeviceplacedinconductivefoam duringstorageorhandlingtopreventelectrostaticdamage totheMOS gates. ABSOLUTE MAXIMUM RATINGS (1)(2) StorageTemperature −65°C to+150°C AmbientTemperatureunderBias −55°C to+125°C JunctionTemperatureunderBias Ceramic −55°C to+175°C VCC PinPotentialtoGround Pin −0.5Vto+7.0V InputVoltage(3) −0.5Vto+7.0V InputCurrent(3) −30 mA to+5.0mA VoltageAppliedtoAny Output intheDisabledorPower-OffState −0.5Vto5.5V intheHIGH State −0.5VtoVCC CurrentAppliedtoOutput inLOW State(Max) twicetheratedIOL (mA) DC LatchupSourceCurrent −500 mA Over VoltageLatchup(I/O) 10V (1) Absolutemaximum ratingsarevaluesbeyond whichthedevicemay be damaged orhave itsusefullifeimpaired.Functionaloperation undertheseconditionsisnotimplied. (2) IfMilitary/Aerospacespecifieddevicesarerequired,pleasecontacttheTexas InstrumentsSalesOffice/Distributorsforavailabilityand specifications. (3) Eithervoltagelimitorcurrentlimitissufficienttoprotectinputs. RECOMMENDED OPERATING CONDITIONS FreeAirAmbientTemperature Military −55°C to+125°C SupplyVoltage Military +4.5V to+5.5V Minimum InputEdge Rate (ΔV/Δt) Data Input 50 mV/ns EnableInput 20 mV/ns DC ELECTRICAL CHARACTERISTICS Symbol Parameter ABT244 Units VCC Conditions Min Typ Max VIH InputHIGH Voltage 2.0 V RecognizedHIGH Signal VIL InputLOW Voltage 0.8 V RecognizedLOW Signal VCD InputClamp DiodeVoltage −1.2 V Min IIN = −18 mA VOH OutputHIGH Voltage 54ABT 2.5 V Min IOH = −3 mA 54ABT 2.0 V Min IOH = −24 mA VOL OutputLOW Voltage 54ABT 0.55 V Min IOL = 48 mA IIH InputHIGH Current 5 μA Max VIN = 2.7V (1)
5 VIN = VCC
IBVI InputHIGH CurrentBreakdown Test 7 μA Max VIN = 7.0V (1) Ensured,butnottested.
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www.ti.com SNOS041B –JULY 1998–REVISED APRIL 2013 DC ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter ABT244 Units VCC Conditions Min Typ Max IIL InputLOW Current −5 μA Max VIN = 0.5V (1) −5 VIN = 0.0V VID InputLeakage Test 4.75 V 0.0 IID = 1.9μA AllOtherPinsGrounded IOZH OutputLeakage Current 50 μA 0 − VOUT = 2.7V;OE n = 2.0V 5.5V IOZL OutputLeakage Current −50 μA 0 − VOUT = 0.5V;OE n = 2.0V 5.5V IOS OutputShort-CircuitCurrent −100 −275 mA Max VOUT = 0.0V ICEX OutputHighLeakage Current 50 μA Max VOUT = VCC IZZ Bus DrainageTest 100 μA 0.0 VOUT = 5.5V;AllOthersGND ICCH Power SupplyCurrent 50 μA Max AllOutputsHIGH ICCL Power SupplyCurrent 30 mA Max AllOutputsLOW ICCZ Power SupplyCurrent 50 μA Max OE n = VCC ; AllOthersatVCC orGround ICCT AdditionalICC /Input OutputsEnabled 2.5 mA Max VI= VCC − 2.1V OutputsTRI-STATE 2.5 mA EnableInputVI= VCC − 2.1V OutputsTRI-STATE 50 μA Data InputVI= VCC − 2.1V AllOthersatVCC orGround ICCD Dynamic ICC (2) No Load mA/ Max OutputsOpen
0.1 MHz OE n = GND, (3)
One BitToggling,50% DutyCycle (2) Ensured,butnottested. (3) For8 bitstoggling,ICCD < 0.8mA/MHz. AC ELECTRICAL CHARACTERISTICS Symbol Parameter 54ABT Units Fig. No.TA = −55°C to+125°C VCC = 4.5V–5.5V C L = 50 pF Min Max tPLH PropagationDelay 1.0 5.3 ns See Figure24 tPHL Data toOutputs 1.0 5.0 tPZH OutputEnable 0.8 6.5 ns See Figure23 tPZL Time 1.2 7.9 tPHZ OutputDisable 1.2 7.6 ns See Figure23 tPLZ Time 1.0 7.9 CAPACITANCE ConditionsSymbol Parameter Typ Units TA = 25°C C IN InputCapacitance 5.0 pF VCC = 0V C OUT (1) OutputCapacitance 9.0 pF VCC = 5.0V (1) C OUT ismeasured atfrequencyf= 1 MHz, perMIL-STD-883B,Method 3012. Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 3 ProductFolderLinks:54ABT244
SNOS041B –JULY 1998–REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CURVES Dashed linesrepresentdesigncharacteristics;forspecifiedspecificationsrefertoAC ELECTRICAL CHARACTERISTICS . tPLH vs Temperature (TA ) tPHL vs Temperature (TA ) C L = 50 pF,1 Output Switching C L = 50 pF,1 Output Switching Figure3. Figure4. tPLH vs Load Capacitance tPHL vs Load Capacitance
1 Output Switching,TA = 25°C 1 Output Switching,TA = 25°C
Figure5. Figure6. tPLH vs Load Capacitance tPHL vs Load Capacitance
8 Outputs Switching,TA = 25°C 8 Outputs Switching,TA = 25°C
Figure7. Figure8.
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www.ti.com SNOS041B –JULY 1998–REVISED APRIL 2013 TYPICAL PERFORMANCE CURVES (continued) Dashed linesrepresentdesigncharacteristics;forspecifiedspecificationsrefertoAC ELECTRICAL CHARACTERISTICS . tPZL vs Temperature (TA ) tPLZ vs Temperature (TA ) C L = 50 pF,1 Output Switching C L = 50 pF,1 Output Switching Figure9. Figure10. tPZH vs Temperature (TA ) tPHZ vs Temperature (TA ) C L = 50 pF,1 Output Switching C L = 50 pF,1 Output Switching Figure11. Figure12. tPZH vs Temperature (TA ) tPHZ vs Temperature (TA ) C L = 50 pF,8 Outputs Switching C L = 50 pF,8 Outputs Switching Figure13. Figure14. Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 5 ProductFolderLinks:54ABT244
SNOS041B –JULY 1998–REVISED APRIL 2013 www.ti.com TYPICAL PERFORMANCE CURVES (continued) Dashed linesrepresentdesigncharacteristics;forspecifiedspecificationsrefertoAC ELECTRICAL CHARACTERISTICS . tPZL vs Temperature (TA ) tPLZ vs Temperature (TA ) C L = 50 pF,8 Outputs Switching C L = 50 pF,8 Outputs Switching Figure15. Figure16. tPZL vs Load Capacitance tPZH vs Load Capacitance
8 Outputs Switching 8 Outputs Switching
TA = 25°C TA = 25°C Figure17. Figure18. tPLH and tPHL vs Number ICC vs Frequency, Outputs SwitchingVCC = 5.0V, Average,TA = 25°C, TA = 25°C, C L = 50 pF AllOutputs Unloaded/Unterminated Figure19. Figure20.
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www.ti.com SNOS041B –JULY 1998–REVISED APRIL 2013 AC LOADING *Includesjigand probecapacitance Figure21. Standard AC TestLoad Figure22. TestInputSignalLevels Table1.TestInputSignalRequirements Amplitude Rep. Rate tW tr tf 3.0V 1 MHz 500 ns 2.5ns 2.5ns AC WAVEFORMS Figure23. TRI-STATE Output HIGH and LOW Enable and DisableTimes Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 7 ProductFolderLinks:54ABT244
SNOS041B –JULY 1998–REVISED APRIL 2013 www.ti.com Figure24. PropagationDelay Waveforms for Invertingand Non-InvertingFunctions
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www.ti.com SNOS041B –JULY 1998–REVISED APRIL 2013
REVISION HISTORY
Changes from RevisionA (April2013)toRevisionB Page Copyright© 1998–2013,Texas InstrumentsIncorporated SubmitDocumentationFeedback 9 ProductFolderLinks:54ABT244
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