芯片资料2资料库芯片资料274ls244_W

1、SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244 SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244 OCTALBUFFERSAND LINE DRIVERS WITH 3-STATEOUTPUTSSDLS144B APRIL 1985 REVISED FEBRUARY 20023-State Outputs Drive Bus Lines or Buffer Memory Address RegistersPNP Inputs Reduce DC

2、Loading Hysteresis at Inputs Improves NoiseSN54LS, SN54S .J OR W PACKAGE SN74LS240, SN74LS244 . . . DB, DW, N, OR NS PACKAGESN74LS241 . DW, N, OR NS PACKAGE SN74S . . . DW OR N PACKAGE(TOP VIEW)POST OFFICE BOX 655303 DALLAS, TEXAS 752651MarginsdescriptionThese octal buffers and line drivers are desi

3、gned specifically to improve both the performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The designer has a choice of selected combinations of inverting and noninverting outputs, symmetrical, active-low output-control (G) inputs

4、, and complementary1G1A12Y41A22Y31A32Y21A42Y1 GNDVCC2G/2G1Y12A41Y22A31Y32A21Y42A1output-control (G and G) inputs. These devices feature high fan-out, improved fan-in, and 400-mV noise margin. The SN74LS and SN74S devices can be used to drive terminated lines down to 133 W. 2G for LS241 and S241 or 2

5、G for all other drivers.2Y41A11G VCC 2G/2GSN54LS, SN54S . . . FK PACKAGE (TOP VIEW)1A22Y31A32Y21A41Y13 2 14567820 1918171615149 10 11 12 132A41Y22A31Y32Y1 GND 2A11Y42A2 2G for LS241 and S241 or 2G for all other drivers.Please be aware that an important notice concerning availability, standard warran

6、ty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244 SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244OCTALBUFFERS AND LINE DRIVERS WITH

7、 3-STATEOUTPUTSPRODUCTION DATA information is current as of publication date.Copyright 2002, Texas Instruments IncorporatedProducts conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily includeSDLS14est4BingofAaPllRpaILram1e9te8r5s

8、. REVISED FEBRUARY 2002Onproductscompliant to MIL-PRF-38535, all parametersaretested unless otherwise noted. On all other products, production processingdoesnotnecessarilyincludetestingof all parameters.1202193184175166157148139121011 SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244 SN7

9、4LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244 OCTALBUFFERSAND LINE DRIVERS WITH 3-STATEOUTPUTSSDLS144B APRIL 1985 REVISED FEBRUARY 2002ORDERING INFORMATIONTAPACKAGEORDERABLE PART NUMBERTOP-SIDE MARKING0C to 70CPDIP NTubeSN74LS240NSN74LS240NSN74LS241NSN74LS241NSN74LS244NSN74LS244NSN74S24

10、0NSN74S240NSN74S241NSN74S241NSN74S244NSN74S244NSOIC DWTubeSN74LS240DWLS240Tape and reelSN74LS240DWRTubeSN74LS241DWLS241Tape and reelSN74LS241DWRTubeSN74LS244DWLS244Tape and reelSN74LS244DWRTubeSN74S240DWS240Tape and reelSN74S240DWRTubeSN74S241DWS241Tape and reelSN74S241DWRTubeSN74S244DWS244Tape and

11、reelSN74S244DWRSOP NSTubeSN74LS240NSR74LS240SN74LS241NSR74LS241SN74LS244NSR74LS244SSOP DBTape and reelSN74LS240DBRLS240SN74LS244DBRLS244 Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at /sc/package.POST OFFICE BOX 655303

12、 DALLAS, TEXAS 752651SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244 SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244 OCTALBUFFERSAND LINE DRIVERS WITH 3-STATEOUTPUTSSDLS144B APRIL 1985 REVISED FEBRUARY 2002ORDERING INFORMATION (CONTINUED)TAPACKAGEORDERABLE PART NUMBERTOP-

13、SIDE MARKING55C to 125CCDIP JTubeSN54LS240JSN54LS240JSNJ54LS240JSNJ54LS240JSN54LS241JSN54LS241JSNJ54LS241JSNJ54LS241JSN54LS244JSN54LS244JSNJ54LS244JSNJ54LS244JSN54S240JSN54S240JSNJ54S240JSNJ54S240JSN54S241JSN54S241JSNJ54S241JSNJ54S241JSN54S244JSN54S244JSNJ54S244JSNJ54S244JCFP WTubeSNJ54LS240WSNJ54LS

14、240WSNJ54LS241WSNJ54LS241WSNJ54LS244WSNJ54LS244WSNJ54S240WSNJ54S240WSNJ54S241WSNJ54S241WSNJ54S244WSNJ54S244WLCCC FKTubeSNJ54LS240FKSNJ54LS240FKSNJ54LS241FKSNJ54LS241FKSNJ54LS244FKSNJ54LS244FKSNJ54S240FKSNJ54S240FKSNJ54S241FKSNJ54S241FKSNJ54S244FKSNJ54S244FK Package drawings, standard packing quantit

15、ies, thermal data, symbolization, and PCB design guidelines are available at /sc/package.POST OFFICE BOX 655303 DALLAS, TEXAS 752659schematics of inputs and outputsLS240, LS241, LS244S240, S241, S244EQUIVALENT OF EACH INPUTEQUIVALENT OF EACH INPUTVCCVCC9 kW NOMReqInputInputG and G inputs:

16、Req = 2 kW NOMA inputs: Req = 2.8 kW NOMTYPICAL OF ALL OUTPUTSVCCROutputGNDLS240. LS241, LS244: R = 50 WNOM S240, S241, S244: R = 25 W NOM12184166148 12logic diagram1G1A11A21A3 19119 1371551731A42G2A12A22A32A4LS240, S2401Y11Y21Y31Y42Y12Y22Y32Y41G11A1 2181Y11A2 4161Y21A3 6141Y31A4 82G 19 12 1Y42A1 11

17、92Y12A2 1372Y22A3 1552Y32A4 1732Y4LS241, S2411G1A11A21A31A4LS244, S244 1 218 416614 8 121Y11Y21Y31Y4 19119 1371551732G2A12A22A32A4Pin numbers shown are for DB, DW, J, N, NS, and W packages.2Y12Y22Y32Y4absolute maximum ratings over operating free-air temperature range (unless otherwise noted)Supply v

18、oltage, VCC (see Note 1)VInput voltage, VI: LSVSVOff-state output voltageVPackage thermal impedance, qJA (see Note 2): DB packageDW package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70C/W58C/WN package69C/WNS packa

19、ge60C/WStorage temperature range, Tstg65C to 150C Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended o

20、perating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.NOTES: 1. Voltage values are with respect to network ground terminal.2. The package thermal impedance is calculated in accordance with JESD 51-7.recommended operating

21、 conditionsSN54LSSN74LSUNITMINNOMMAXMINNOMMAXVCCSupply voltage (see Note 1)4.555.54.7555.25VVIHHigh-level input voltage22VVILLow-level input voltage0.70.8VIOHHigh-level output current1215mAIOLLow-level output current1224mATAOperating free-air temperature55125070CNOTE 1: Voltage values are with respe

22、ct to network ground terminal.electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)PARAMETERTEST CONDITIONSSN54LSSN74LSUNITMINTYPMAXMINTYPMAXVIKVCC = MIN,II = 18 mA1.51.5VHysteresis (VT+ VT)VCC = MIN0.4VVOHVCC = MIN, IOH = 3 mAVIH = 2 V,VI

23、L = MAX,3.4VVCC = MIN, IOH = MAXVIH = 2 V,VIL = 0.5 V,22VOLVCC = MIN, VIL = MAXVIH = 2 V,IOL = 12 mA0.40.4VIOL = 24 mA0.5IOZHVCC = MAX, VIL = MAXVIH = 2 V,VO = 2.7 V2020mAIOZLVCC = MAX, VIL = MAXVIH = 2 V,VO = 0.4 V2020mAIIVCC = MAX,VI = 7 V0.10.1mAIIHVCC = MAX,VI = 2.7 V2020mAIILVCC = MAX,

24、VIL = 0.4 V0.20.2mAIOSVCC = MAX,4022540225mAICCVCC = MAX,Output openOutputs highAll17271727mAOutputs lowLS24026442644LS241, LS24427462746Outputs disabledLS24029502950LS241, LS24432543254 For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. A

25、ll typical values are at VCC = 5 V, TA = 25C. Not more than one output should be shorted at a time, and duration of the short-circuit should not exceed one second.switching characteristics, VCC = 5 V, TA = 25C (see Figure 1)PARAMETERTEST CONDITIONSLS240LS241, LS244UNITMINTYPMAXMINTYPMAXtPLHRL = 667

26、W,CL = 45 pF9141218nstPHL12181218tPZLRL = 667 W,CL = 45 pF20302030nstPZH15231523tPLZRL = 667 W,CL = 5 pF10201020nstPHZ15251525recommended operating conditionsSN54SSN74SUNITMINNOMMAXMINNOMMAXVCCSupply voltage (see Note 1)4.555.54.7555.25VVIHHigh-level input voltage22VVILLow-level input voltage0.80.8V

27、IOHHigh-level output current1215mAIOLLow-level output current4864mAExternal resistance between any input and VCC or ground4040kWTAOperating free-air temperature (see Note 3)55125070CNOTES: 1. Voltage values are with respect to network ground terminal.3. An SN54S241J operating at free-air temperature

28、 above 116C requires a heat sink that provides a thermal resistance from case to free air, RqCA, of not more that 40C/W.electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)PARAMETERTEST CONDITIONSSN54SSN74SUNITMINTYPMAXMINTYPMAXVIKVCC = MIN,II = 1

29、8 mA1.21.2VHysteresis (VT+ VT)VCC = MIN0.4VVOHVCC = MIN IOH = 1 mAVIH = 2 V,VIL = 0.8 V,2.7VVCC = MIN, IOH = 3 mAVIH = 2 V,VIL = 0.8 V,3.4VCC = MIN, IOH = MAXVIH = 2 V,VIL = 0.5 V,22VOLVCC = MIN, IOL = MAXVIH = 2 V,VIL = 0.8 V,0.550.55VIOZHVCC = MAX, VIL = 0.8 VVIH = 2 V,VO = 2.4 V

30、5050mAIOZLVCC = MAX, VIL = 0.8 VVIH = 2 V,VO = 0.5 V5050mAIIVCC = MAX,VI = 5.5 V11mAIIHVCC = MAX,VI = 2.7 V5050mAIILVCC = MAX,VI = 0.5 VAny A400400mAAny G22mAIOSVCC = MAX5022550225mAICCVCC = MAX,Output openOutputs highS2408012380135mAS241,S2449514795160Outputs lowS240100145100150S241, S2441201701201

31、80Outputs disabledS240100145100150S241, S244120170120180 For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. All typical values are at VCC = 5 V, TA = 25C. Not more than one output should be shorted at a time, and duration of the short-circ

32、uit should not exceed one second.switching characteristics, VCC = 5 V, TA = 25C (see Figure 2)PARAMETERTEST CONDITIONSS240S241, S244UNITMINTYPMAXMINTYPMAXtPLHRL = 90 W,CL = 50 pF4.5769nstPHL4.5769tPZLRL = 90 W,CL = 50 pF10151015nstPZH6.510812tPLZRL = 90 W,CL = 5 pF10151015nstPHZ6969SN54LS240, SN54LS

33、241, SN54LS244, SN54S240, SN54S241, SN54S244 SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244 OCTALBUFFERSAND LINE DRIVERS WITH 3-STATEOUTPUTSSDLS144B APRIL 1985 REVISED FEBRUARY 2002PARAMETER MEASUREMENT INFORMATION SERIES 54LS/74LS DEVICESPOST OFFICE BOX 655303 DALLAS, TEXAS 7526511Te

34、stPointVCCVCCVCCFrom Output Under TestTestRL PointS1(see Note B)From Output Under TestCLRL(see Note B)From OutputUnder TestRLTest PointCL (see Note A)5 kW(see Note A)CL(see Note A)S2LOAD CIRCUITFOR 2-STATE TOTEM-POLE OUTPUTS1.3 V1.3 Vtw1.3 V1.3 VHigh-LevelPulseLOAD CIRCUITFOR OPEN-COLLECTOR OUTPUTS1

35、.3 Vtsuth1.3 V1.3 VTiming InputLOAD CIRCUIT FOR 3-STATE OUTPUTS3 V0 VLow-LevelPulseVOLTAGE WAVEFORMS PULSE DURATIONSData Input3 V0 VVOLTAGE WAVEFORMS SETUP AND HOLD TIMESInputOutput Control1.3 V1.3 VtPLHtPHL1.3 V1.3 VtPHLtPLH1.3 V1.3 V 3 V(low-levelenabling)0 V3 V1.3 V1.3 V0 VtPZLtPLZIn-Phase Output

36、(see Note D)Out-of-PhaseOutput (see Note D)VOH VOLVOH VOLWaveform 1 (see Notes Cand D)Waveform 2 (see Notes Cand D)tPZH1.3 V1.3 V1.5 V VOL + 0.3 V VOLtPHZVOH VOH 0.3 V1.5 VVOLTAGE WAVEFORMS PROPAGATION DELAY TIMESNOTES: A. CL includes probe and jig capacitance.B. All diodes are 1N3064 or equivalent.

37、VOLTAGE WAVEFORMSENABLE AND DISABLE TIMES, 3-STATE OUTPUTSC. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the outp

38、ut control.D. S1 and S2 are closed for tPLH, tPHL, tPHZ, and tPLZ; S1 is open and S2 is closed for tPZH; S1 is closed and S2 is open for tPZL.E. Phase relationships between inputs and outputs have been chosen arbitrarily for these examples.F. All input pulses are supplied by generators having the fo

39、llowing characteristics: PRR 1 MHz, ZO 50 W, tr 15 ns, tf 6 ns.G. The outputs are measured one at a time with one input transition per measurement.Figure 1. Load Circuits and Voltage WaveformsPARAMETER MEASUREMENT INFORMATION SERIES 54S/74S DEVICESTestPointVCCVCCVCCFrom Output Under TestTestRL Point

40、S1(see Note B)From Output Under TestCLRL(see Note B)From OutputUnder TestRLTest PointCL (see Note A)1 kW(see Note A)CL(see Note A)S2LOAD CIRCUITFOR 2-STATE TOTEM-POLE OUTPUTS1.5 V1.5 Vtw1.5 V1.5 VHigh-LevelPulseLOAD CIRCUITFOR OPEN-COLLECTOR OUTPUTS1.5 Vtsuth1.5 V1.5 VTiming InputLOAD CIRCUIT FOR 3-

41、STATE OUTPUTS3 V0 VLow-LevelPulseVOLTAGE WAVEFORMS PULSE DURATIONSData Input3 V0 VVOLTAGE WAVEFORMS SETUP AND HOLD TIMESInputIn-Phase Output(see Note D)3 V1.5 V1.5 VtPLHtPHL1.5 V1.5 VtPHLtPLH1.5 V1.5 V 0 VVOH VOLOutput Control (low-level enabling)1.5 V1.5 VtPZLtPLZ1.5 VtPZH VOLtPHZ VOH1.5 VWaveform

42、1 (see Notes Cand D)3 V0 V1.5 VVOL + 0.5 VOut-of-PhaseOutput (see Note D)VOLTAGE WAVEFORMSVOH VOLWaveform 2 (see Notes Cand D)VOLTAGE WAVEFORMSVOH 0.5 V1.5 VPROPAGATION DELAY TIMESNOTES: A. CL includes probe and jig capacitance.B. All diodes are 1N3064 or equivalent.ENABLE AND DISABLE TIMES, 3-STATE

43、 OUTPUTSC. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.D. S1 and S2 are closed for tPLH, tPHL,

44、 tPHZ, and tPLZ; S1 is open and S2 is closed for tPZH; S1 is closed and S2 is open for tPZL.E. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, ZO 50 W; tr and tf 7 ns for Series 54/74 devices and tr and tf 2.5 ns for Series 54S/74S devices.F. The outputs

45、are measured one at a time with one input transition per measurement.Figure 2. Load Circuits and Voltage WaveformsAPPLICATION INFORMATIONPACKAGE OPTION ADDENDUM28-Feb-2005PACKAGING INFORMATIONOrderable DeviceStatus (1)Package TypePackage DrawingPinsPackage QtyEco Plan(2)Lead/Ball FinishMSL

46、 Peak Temp (3)5962-7801201VRAACTIVECDIPJ201NoneCall TILevel-NC-NC-NC5962-7801201VSAACTIVECFPW201NoneCall TILevel-NC-NC-NC7705701RAACTIVECDIPJ201NoneCall TILevel-NC-NC-NC7705701SAACTIVECFPW201NoneCall TILevel-NC-NC-NC78012012AACTIVELCCCFK201NoneCall TILevel-NC-NC-NC7801201RAACTIVECDIPJ201NoneCall TIL

47、evel-NC-NC-NC7801201SAACTIVECFPW201NoneCall TILevel-NC-NC-NCJM38510/32401B2AACTIVELCCCFK201NoneCall TILevel-NC-NC-NCJM38510/32401BRAACTIVECDIPJ201NoneCall TILevel-NC-NC-NCJM38510/32401BSAACTIVECFPW201NoneCall TILevel-NC-NC-NCJM38510/32402B2AACTIVELCCCFK201NoneCall TILevel-NC-NC-NCJM38510/32402BRAACTIVECDIPJ201NoneCall TILevel-NC-NC-NCJM38510/32402BSAACTIVECFPW201NoneCall TILevel-NC-NC-NCJM38510/32403B2AACTIVELCCCFK201NoneCall TILevel-NC-NC-NCJM38510/32403BRAACTIVECDIPJ201NoneCall TILevel-NC-NC-NCJM38510