SN74LV393.pdf

1、 SN54LV393A,SN74LV393ADUAL 4-BIT BINARY COUNTERS SCLS457B FEBRUARY 2001 REVISED JULY 20031POST OFFICE BOX 655303 DALLAS,TEXAS 75265?2-V to 5.5-V VCC Operation?Max tpd of 10 ns at 5 V?Typical VOLP(Output Ground Bounce)2.3 V at VCC=3.3 V,TA=25C?Ioff Supports Partial-Power-Down-ModeOperation?Dual 4-Bit

2、 Binary Counters With IndividualClocks?Direct Clear for Each 4-Bit Counter?Can Significantly Improve SystemDensities by Reducing Counter PackageCount by 50 Percent?Latch-Up Performance Exceeds 100 mA PerJESD 78,Class II?ESD Protection Exceeds JESD 22 2000-V Human-Body Model(A114-A)200-V Machine Mode

3、l(A115-A)1000-V Charged-Device Model(C101)description/ordering informationThe LV393A devices contain eight flip-flops andadditional gating to implement two individual 4-bitcounters in a single package.These devices aredesigned for 2-V to 5.5-V VCC operation.ORDERING INFORMATIONTAPACKAGEORDERABLEPART

4、 NUMBERTOP-SIDEMARKINGSOICDTube of 50SN74LV393ADLV393ASOIC DReel of 2500SN74LV393ADRLV393ASOP NSReel of 2000SN74LV393ANSR74LV393A40C to 85CSSOP DBReel of 2000SN74LV393ADBRLV393A40C to 85CTube of 90SN74LV393APWTSSOP PWReel of 2000SN74LV393APWRLV393AReel of 250SN74LV393APWTTVSOP DGVReel of 2000SN74LV3

5、93ADGVRLV393ACDIP JTube of 25SNJ54LV393AJSNJ54LV393AJ55C to 125CCFP WTube of 150SNJ54LV393AWSNJ54LV393AWLCCC FKTube of 55SNJ54LV393AFKSNJ54LV393AFKPackage drawings,standard packing quantities,thermal data,symbolization,and PCB designguidelines are available at 2003,Texas Instruments IncorporatedPlea

6、se be aware that an important notice concerning availability,standard warranty,and use in critical applications ofTexas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.SN54LV393A.J OR W PACKAGESN74LV393A.D,DB,DGV,NS,OR PW PACKAGE(TOP VIEW)123456714131

7、21110981CLK1CLR1QA1QB1QC1QDGNDVCC2CLK2CLR2QA2QB2QC2QDSN54LV393A.FK PACKAGE(TOP VIEW)NC No internal connection321 20 199 10 11 12 134567818171615142CLRNC2QANC2QB1QANC1QBNC1QC1CLR1CLKNCV2CLKDGNDNCCC1QD2QC2QUNLESS OTHERWISE NOTED this document contains PRODUCTIONDATA information current as of publicati

8、on date.Products conform tospecifications per the terms of Texas Instruments standard warranty.Production processing does not necessarily include testing of allparameters.SN54LV393A,SN74LV393ADUAL 4-BIT BINARY COUNTERS SCLS457B FEBRUARY 2001 REVISED JULY 20032POST OFFICE BOX 655303 DALLAS,TEXAS 7526

9、5description/ordering informaton(continued)These devices comprise two independent 4-bit binary counters,each having a clear(CLR)and a clock(CLK)input.These devices change state on the negative-going transition of the CLK pulse.N-bit binary counters canbe implemented with each package,providing the c

10、apability of divide by 256.The LV393A devices have paralleloutputs from each counter stage so that any submultiple of the input count frequency is available for systemtiming signals.These devices are fully specified for partial-power-down applications using Ioff.The Ioff circuitry disables theoutput

11、s,preventing damaging current backflow through the devices when they are powered down.FUNCTION TABLEINPUTSFUNCTIONCLKCLRFUNCTIONLNo changeLAdvance to next stageXHAll outputs Llogic diagram,each counter(positive logic)RTQACLRCLKRTQBRTQCRTQDQQQQSN54LV393A,SN74LV393ADUAL 4-BIT BINARY COUNTERS SCLS457B

12、FEBRUARY 2001 REVISED JULY 20033POST OFFICE BOX 655303 DALLAS,TEXAS 75265timing diagramCLKCLRQAQBQCQDClearOutputsCount Upabsolute maximum ratings over operating free-air temperature range(unless otherwise noted)Supply voltage range,VCC 0.5 V to 7 V.Input voltage range,VI(see Note 1)0.5 V to 7 V.Outp

13、ut voltage range applied in high or low state,VO(see Notes 1 and 2)0.5 V to VCC+0.5 V.Output voltage range applied in power-off state,VO(see Note 1)0.5 V to 7 V.Input clamp current,IIK(VI 0)20 mA.Output clamp current,IOK(VO VCC)50 mA.Continuous output current,IO(VO=0 to VCC)25 mA.Continuous current

14、through VCC or GND 50 mA.Package thermal impedance,JA(see Note 3):D package 86C/W.DB package 96C/W.DGV package 127C/W.NS package 76C/W.PW package 113C/W.Storage temperature range,Tstg 65C to 150C.Stresses beyond those listed under“absolute maximum ratings”may cause permanent damage to the device.The

15、se are stress ratings only,andfunctional operation of the device at these or any other conditions beyond those indicated under“recommended operating conditions”is notimplied.Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.NOTES:1.The input and output

16、voltage ratings may be exceeded if the input and output current ratings are observed.2.This value is limited to 7 V maximum.3.The package thermal impedance is calculated in accordance with JESD 51-7.SN54LV393A,SN74LV393ADUAL 4-BIT BINARY COUNTERS SCLS457B FEBRUARY 2001 REVISED JULY 20034POST OFFICE BOX 655303 DALLAS,TEXAS 75265recommended operating conditions(see Note 4)SN54LV393ASN74LV393AUNITMINMAXMINMAXUNITVCCSupply voltage25.525.5VVCC=2 V1.51.5VIHHigh level input voltageVCC=2.3 V to 2.7 VVCC