CD74AC253,CD54/74ACT253Dual 4-Input Multiplexer, Three-State
DescriptionTheCD74AC253and’ACT253dual4-inputmultiplexersthatutilizeAdvancedCMOSLogictechnology.OneofthefoursourcesforeachsectionisselectedbythecommonSelectinputs,S0andS1.WhentheOutputEnable(1OEor2OE)isHIGH, the output is in the high-impedance state.Data sheet acquired from Harris SemiconductorSCHS247A
August 1998 - Revised May 2000
Features•Buffered Inputs•Typical Propagation Delay-6.3ns at VCC = 5V, TA = 25oC, CL = 50pF•Exceeds 2kV ESD Protection MIL-STD-883, Method3015•SCR-Latchup-Resistant CMOS Process and CircuitDesign•Speed of Bipolar FAST™/AS/S with SignificantlyReduced Power Consumption•Balanced Propagation Delays•AC Types Feature 1.5V to 5.5V Operation andBalanced Noise Immunity at 30% of the Supply•±24mA Output Drive Current-Fanout to 15 FAST™ ICs-Drives 50Ω Transmission LinesOrdering InformationPARTNUMBERCD74AC253ECD74AC253MCD54ACT253F3ACD74ACT253ECD74ACT253MNOTES:1.Whenordering,usetheentirepartnumber.Addthesuffix96toobtain the variant in the tape and reel.2.Waferanddieforthispartnumberisavailablewhichmeetsallelec-tricalspecifications.PleasecontactyourlocalTIsalesofficeorcus-tomer service for ordering information.TEMP.RANGE (oC)0 to 70oC, -40 to 85,-55 to 1250 to 70oC, -40 to 85,-55 to 125-55 to 1250 to 70oC, -40 to 85,-55 to 1250 to 70oC, -40 to 85,-55 to 125PACKAGE16 Ld PDIP16 Ld SOIC16 Ld CERDIP16 Ld PDIP16 Ld SOICPinoutCD54ACT253(CERDIP)CD74AC253, CD74ACT253(PDIP, SOIC)TOP VIEW1OE1S121I331I241I151I061Y7GND816VCC152OE14S0132I3122I2112I1102I092YCAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.FAST™ is a Trademark of Fairchild Semiconductor.Copyright © 2000, Texas Instruments Incorporated.
1
元器件交易网www.cecb2b.com
CD74AC253, CD54/74ACT253Functional Diagram1OE1I01I11I21I3S0S12I02I12I22I32OE165431421011121315GND = 8VCC = 16SEL/MUX92YSEL/MUX71YTRUTH TABLESELECT INPUTSS1XLLLLHHHHS0XLLHHLLHHnI0XLHXXXXXXDATA INPUTSnI1XXXLHXXXXnI2XXXXXLHXXnI3XXXXXXXLHENABLEINPUTSnOEHLLLLLLLLOUTPUTnYZLHLHLHLHSelectinputsS1andS0arecommontobothsections.H=Highlevel,L=Lowinputs,X=Don’tcare,Z=Highimped-ance.2
元器件交易网www.cecb2b.com
CD74AC253, CD54/74ACT253Absolute Maximum RatingsDC Supply Voltage, VCC. . . . . . . . . . . . . . . . . . . . . . . .-0.5V to 6VDC Input Diode Current, IIKFor VI < -0.5V or VI > VCC + 0.5V. . . . . . . . . . . . . . . . . . . . . .±20mADC Output Diode Current, IOKFor VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mADC Output Source or Sink Current per Output Pin, IOFor VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±50mADC VCC or Ground Current, ICC orIGND (Note 3) . . . . . . . . .±100mAThermal InformationThermal Resistance (Typical, Note 5)θJA (oC/W)PDIP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . .___SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . .___Maximum Junction Temperature (Plastic Package) . . . . . . . . . . .150CMaximum Storage Temperature Range . . . . . . . . . .-65oC to 150oCMaximum Lead Temperature (Soldering 10s). . . . . . . . . . . . .300oCOperating ConditionsTemperature Range, TA . . . . . . . . . . . . . . . . . . . . . .-55oC to 125oCSupply Voltage Range, VCC (Note 4)AC Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.5V to 5.5VACT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5VDC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . .0V to VCCInput Rise and Fall Slew Rate, dt/dvAC Types, 1.5V to 3V . . . . . . . . . . . . . . . . . . . . . . . . .50ns (Max)AC Types, 3.6V to 5.5V. . . . . . . . . . . . . . . . . . . . . . . .20ns (Max)ACT Types, 4.5V to 5.5V. . . . . . . . . . . . . . . . . . . . . . .10ns (Max)CAUTION:Stressesabovethoselistedin“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thisisastressonlyratingandoperationof the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.NOTES:3.For up to 4 outputs per device, add±25mA for each additional output.4.Unless otherwise specified, all voltages are referenced to ground.5.θJA is measured with the component mounted on an evaluation PC board in free air.DC Electrical SpecificationsTESTCONDITIONSPARAMETERAC TYPESHigh Level Input VoltageVIH--1.535.5Low Level Input VoltageVIL--1.535.5High Level Output VoltageVOHVIH or VIL-0.05-0.05-0.05-4-24-75(Note 6, 7)-50(Note 6, 7)1.534.534.55.55.51.22.13.85---1.42.94.42.583.94-----0.30.91.65-------1.22.13.85---1.42.94.42.483.83.85----0.30.91.65-------1.22.13.85---1.42.94.42.43.7-3.85---0.30.91.65-------VVVVVVVVVVVVVSYMBOLVI(V)IO(mA)VCC(V)25oCMINMAX-40oC TO85oCMINMAX-55oC TO125oCMINMAXUNITS3
元器件交易网www.cecb2b.com
CD74AC253, CD54/74ACT253DC Electrical Specifications (Continued)TESTCONDITIONSPARAMETERLow Level Output VoltageSYMBOLVOLVI(V)VIH or VILIO(mA)0.050.050.05122475(Note 6, 7)50(Note 6, 7)Input Leakage CurrentThree-State LeakageCurrentQuiescent Supply CurrentMSIACT TYPESHigh Level Input VoltageLow Level Input VoltageHigh Level Output VoltageVIHVILVOH--VIH or VIL---0.05-24-75(Note 6, 7)-50(Note 6, 7)Low Level Output VoltageVOLVIH or VIL0.052475(Note 6, 7)50(Note 6, 7)Input Leakage CurrentThree-State or LeakageCurrentQuiescent Supply CurrentMSIAdditionalSupplyCurrentperInput Pin TTL Inputs High1 Unit LoadNOTES:6.Testoneoutputatatimefora1-secondmaximumduration.Measurementismadebyforcingcurrentandmeasuringvoltagetominimizepower dissipation.7.Test verifies a minimum 50Ω transmission-line-drive capability at 85oC, 75Ω at 125oC.IIIOZVCC orGNDVIH or VILVO=VCCor GNDVCC orGNDVCC-2.1--4.5 to5.54.5 to5.54.54.55.55.54.54.55.55.55.55.52-4.43.94---------0.8----0.10.36--±0.1±0.52-4.43.83.85--------0.8----0.10.441.65-±1±52-4.43.7-3.85-------0.8----0.10.5-1.65±1±10VVVVVVVVVVµAµAIIIOZVCC orGNDVIH or VILVO=VCCor GNDVCC orGND--25oCMIN---------MAX0.10.10.10.360.36--±0.1±0.5-40oC TO85oCMIN---------MAX0.10.10.10.440.441.65-±1±5-55oC TO125oCMIN---------MAX0.10.10.10.50.5-1.65±1±10UNITSVVVVVVVµAµAVCC(V)1.534.534.55.55.55.55.5ICC05.5-8-80-160µAICC∆ICC0-5.54.5 to5.5--82.4--802.8--1603µAmA4
元器件交易网www.cecb2b.com
CD74AC253, CD54/74ACT253ACT Input Load TableINPUTS0, S1, nI0, nI1nOEUNIT LOAD10.83NOTE:Unitloadis∆ICClimitspecifiedinDCElectricalSpecificationsTable, e.g., 2.4mA max at 25oC.Switching SpecificationsInput tr, tf = 3ns, CL= 50pF (Worst Case)-40oC TO 85oCPARAMETERAC TYPESPropagation Delay,S0, S1, to YtPLH, tPHL1.53.3(Note 9)5(Note 10)Propagation Delay,nI to YtPLH, tPHL1.53.35Propagation Delay,Output Enable,Output Disable to YtPLZ, tPHZ,tPZL, tPZH1.53.35Three-State OutputCapacitanceInput CapacitancePower Dissipation CapacitanceACT TYPESPropagation Delay,S0, S1, to YPropagation Delay,nI to YPropagation Delay,Output Enable,Output Disable to YThree-State OutputCapacitanceInput CapacitancePower Dissipation CapacitanceNOTES:8.Limits tested 100%.9.3.3V Min is at 3.6V, Max is at 3V.10.5V Min is at 5.5V, Max is at 4.5V.11.CPD is used to determine the dynamic power consumption per multiplexer.AC: PD = VCC2 fi(CPD + CL)ACT: PD = VCC2 fi(CPD + CL) + VCC∆ICC where fi = input frequency, CL = output load capacitance, VCC = supply voltage.tPLH, tPHLtPLH, tPHLtPLZ, tPHZ,tPZL, tPZHCOCICPD(Note 11)5(Note 10)555.74.63.2---2016.411.55.54.53.2---221812.6nsnsnsCOCICPD(Note 11)----7.25.2-4.83.4-4.53--------------1072272518.215116.912.113115.710.51510--75-4.73.3-4.32.9--------------107250282016618.613.314417.311.51510-nsnsnsnsnsnsnsnsnspFpFpFSYMBOL VCC (V)MINTYPMAX-55oC TO 125oCMINTYPMAXUNITS--------1071510------1071510-pFpFpF5
元器件交易网www.cecb2b.com
CD74AC253, CD54/74ACT253tr = 3nsOUTPUTDISABLEtPLZOUTPUT:LOWTO OFF TO LOWtPHZOUTPUT:HIGHTO OFF TO HIGHOUTPUTSENABLEDtf = 3nsINPUT LEVEL90%VS10%GNDVS0.2VCCtPZLVOL (≠GND)tPZHVOH (≠VCC)0.8 VCCVSOUTPUTSENABLEDGND (tPHZ,tPZH)OPEN (tPHL,tPLH)2 VCC (tPLZ,tPZL)(OPEN DRAIN)OUTPUTSDISABLEDOTHERINPUTS(TIED HIGHOR LOW)OUTPUTDISABLEDUTWITHTHREE-STATEOUTPUT500Ω†RLCL50pFOUT500Ω†RL†FOR AC SERIES ONLY: WHEN VCC = 1.5V, RL = 1kΩFIGURE 1.THREE-STATE PROPAGATION DELAY WAVEFORMS AND TEST CIRCUITINPUTLEVELtr = 3nstf = 3ns90%VS10%I OR SOUTPUT YtPLHtPHLVSFIGURE 2.PROPAGATION DELAY TIMESOUTPUTRL (NOTE)500ΩDUTOUTPUTLOADCL50pFNOTE:For AC Series Only: When VCC = 1.5V, RL = 1kΩ.ACInput LevelInput Switching Voltage, VSOutput Switching Voltage, VSVCC0.5 VCC0.5 VCCACT3V1.5V0.5 VCCFIGURE 3.PROPAGATION DELAY TIMES6
元器件交易网www.cecb2b.com
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinueany product or service without notice, and advise customers to obtain the latest version of relevant informationto verify, before placing orders, that information being relied on is current and complete. All products are soldsubject to the terms and conditions of sale supplied at the time of order acknowledgment, including thosepertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale inaccordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extentTI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarilyperformed, except those mandated by government requirements.Customers are responsible for their applications using TI components.
In order to minimize risks associated with the customer’s applications, adequate design and operatingsafeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or representthat any license, either express or implied, is granted under any patent right, copyright, mask work right, or otherintellectual property right of TI covering or relating to any combination, machine, or process in which suchsemiconductor products or services might be or are used. TI’s publication of information regarding any thirdparty’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright © 2000, Texas Instruments Incorporated
因篇幅问题不能全部显示，请点此查看更多更全内容