电子技术-芯片资料-74LS174.pdf

TL/F/640454LS174/DM54LS174/DM74LS174,54LS175/DM54LS175/DM74LS175Hex/Quad D Flip-Flops with ClearJune 198954LS174/DM54LS174/DM74LS174,54LS175/DM54LS175/DM74LS175Hex/Quad D Flip-Flops with ClearGeneral DescriptionThese positive-edge-triggered flip-flops utilize TTL circuitryto implement D-type flip-flop logic.All have a direct clearinput,and the quad(175)versions feature complementaryoutputs from each flip-flop.Information at the D inputs meeting the setup time require-ments is transferred to the Q outputs on the positive-goingedge of the clock pulse.Clock triggering occurs at a particu-lar voltage level and is not directly related to the transitiontime of the positive-going pulse.When the clock input is ateither the high or low level,the D input signal has no effectat the output.FeaturesYLS174 contains six flip-flops with single-rail outputsYLS175 contains four flip-flops with double-rail outputsYBuffered clock and direct clear inputsYIndividual data input to each flip-flopYApplications include:Buffer/storage registersShift registersPattern generatorsYTypical clock frequency 40 MHzYTypical power dissipation per flip-flop 14 mWYAlternateMilitary/Aerospacedevice(54LS174,54LS175)is available.Contact a National Semiconduc-tor Sales Office/Distributor for specifications.Connection DiagramsDual-In-Line PackageTL/F/64041Order Number 54LS174DMQB,54LS174FMQB,54LS174LMQB,DM54LS174J,DM54LS174W,DM74LS174M or DM74LS174NSee NS Package Number E20A,J16A,M16A,N16E or W16ADual-In-Line PackageTL/F/64042Order Number 54LS175DMQB,54LS175FMQB,54LS175LMQB,DM54LS175JDM54LS175W,DM74LS175M or DM74LS175NSee NS Package Number E20A,J16A,M16A,N16E or W16AFunction Table(Each Flip-Flop)InputsOutputsClearClockDQQLXXLHHuHHLHuLLHHLXQ0Q0HeHigh Level(steady state)LeLow Level(steady state)XeDont CareueTransition from low to high levelQ0eThe level of Q before the indicated steady-state input conditions wereestablished.eLS175 onlyC1995 National Semiconductor CorporationRRD-B30M105/Printed in U.S.A.Absolute Maximum Ratings(Note)If Military/Aerospace specified devices are required,pleasecontacttheNationalSemiconductorSalesOffice/Distributors for availability and specifications.Supply Voltage7VInput Voltage7VOperating Free Air Temperature RangeDM54LS and 54LSb55C toa125CDM74LS0C toa70CStorage Temperature Rangeb65C toa150CNote:The Absolute Maximum Ratings are those valuesbeyond which the safety of the device cannot be guaran-teed.The device should not be operated at these limits.Theparametric values defined in the Electrical Characteristicstable are not guaranteed at the absolute maximum ratings.The Recommended Operating Conditions table will definethe conditions for actual device operation.Recommended Operating ConditionsSymbolParameterDM54LS174DM74LS174UnitsMinNomMaxMinNomMaxVCCSupply Voltage4.555.54.7555.25VVIHHigh Level Input Voltage22VVILLow Level Input Voltage0.70.8VIOHHigh Level Output Currentb0.4b0.4mAIOLLow Level Output Current48mAfCLKClock Frequency(Note 1)030030MHzfCLKClock Frequency(Note 2)025025MHztWPulse WidthClock2020ns(Note 6)Clear2020tSUData Setup Time(Note 6)2020nstHData Hold Time(Note 6)00nstRELClear Release Time(Note 6)2525nsTAFree Air Operating Temperatureb55125070CLS174 Electrical Characteristicsover recommended operating free air temperature range(unless otherwise noted)SymbolParameterConditionsMinTypMaxUnits(Note 3)VIInput Clamp VoltageVCCeMin,IIe b18 mAb1.5VVOHHigh Level OutputVCCeMin,IOHeMaxDM542.53.4VVoltageVILeMax,VIHeMinDM742.73.4VOLLow Level OutputVCCeMin,IOLeMaxDM540.250.4VoltageVILeMax,VIHeMinDM740.350.5VIOLe4 mA,VCCeMinDM740.250.4IIInput CurrentMaxVCCeMax,VIe7V0.1mAInput VoltageIIHHigh Level Input CurrentVCCeMax,VIe2.7V20mAIILLow Level InputVCCeMaxClockb0.4CurrentVIe0.4VClearb0.4mADatab0.36IOSShort CircuitVCCeMaxDM54b20b100mAOutput Current(Note 4)DM74b20b100ICCSupply CurrentVCCeMax(Note 5)1626mANote 1:CLe15 pF,RLe2 kX,TAe25C and VCCe5V.Note 2:CLe50 pF,RLe2 kX,TAe25C and VCCe5V.Note 3:All typicals are at VCCe5V,TAe25C.Note 4:Not more than one output should be shorted at a time,and the duration should not exceed one second.Note 5:With all outputs open and 4.5V applied to all data and clear inputs,ICCis measured after a momentary ground,then 4.5V applied to the clock.Note 6:TAe25C and VCCe5V.2LS174 Switching Characteristicsat VCCe5V and TAe25C(See Section 1 for Test Waveforms and Output Load)From(Input)RLe2 kXSymbolParameterTo(Output)CLe15 pFCLe50 pFUnitsMinMaxMinMaxfMAXMaximum Clock Frequency3025MHztPLHPropagation Delay TimeClock to3032nsLow to High Level OutputOutputtPHLPropagation Delay TimeClock to3036nsHigh to Low Level OutputOutputtPHLPropagation Delay TimeClear to3542nsHigh to Low Level OutputOutputRecommended Operating ConditionsSymbolParameterDM54LS175DM74LS175UnitsMinNomMaxMinNomMaxVCCSupply Voltage4.555.54.7555.25VVIHHigh Level Input Voltage22VVILLow Level Input Voltage0.70.8VIOHHigh Level Output Currentb0.4b0.4mAIOLLow Level Output Current48mAfCLKClock Frequency(Note 1)030030MHzfCLKClock Frequency(Note 2)025025MHztWPulse WidthClock2020ns(Note 3)Clear2020tSUData Setup Time(Note 3)2020nstHData Hold Time(Note 3)00nstRELClear Release Time(Note 3)2525nsTAFree Air Operating Temperatureb55125070CNote 1:CLe15 pF,RLe2 kX,TAe25C and VCCe5V.Note 2:CLe50 pF,RLe2 kX,TAe25C and VCCe5V.Note 3:TAe25C and VCCe5V.3LS175 Electrical Characteristicsover recommended operating free air temperature range(unless otherwise noted)SymbolParameterConditionsMinTypMaxUnits(Note 1)VIInput Clamp VoltageVCCeMin,IIe b18 mAb1.5VVOHHigh Level OutputVCCeMin,IOHeMaxDM542.53.4VVoltageVILeMax,VIHeMinDM742.73.4VOLLow Level OutputVCCeMin,IOLeMaxDM540.250.4VoltageVILeMax,VIHeMinDM740.350.5VIOLe4 mA,VCCeMinDM740.250.4IIInput CurrentMaxVCCeMax,VIe7V0.1mAInput VoltageIIHHigh Level Input CurrentVCCeMax,VIe2.7V20mAIILLow Level InputVCCeMaxClockb0.4CurrentVIe0.4VClearb0.4mADatab0.36IOSShort CircuitVCCeMaxDM54b20b100mAOutput Current(Note 2)DM74b20b100ICCSupply CurrentVCCeMax(Note 3)1118mALS175 Switching Characteristicsat VCCe5V and TAe25C(See Section 1 for Test Waveforms and Output Load)From(Input)RLe2 kXSymbolParameterTo(Output)CLe15 pFCLe50 pFUnitsMinMaxMinMaxfMAXMaximum Clock Frequency3025MHztPLHPropagation Delay TimeClock to3032nsLow to High Level OutputQ or QtPHLPropagation Delay TimeClock to3036nsHigh to Low Level OutputQ or QtPLHPropagation Delay TimeClear to2529nsLow to High Level OutputQtPHLPropagation Delay TimeClear to3542nsHigh to Low Level OutputQNote 1:All typicals are at VCCe5V,TAe25C.Note 2:Not more than one output should be shorted at a time,and the duration should not exceed one second.Note 3:With all outputs open and 4.5V applied to all data and clear inputs,ICCis measured after a momentary ground,then 4.5V applied to the clock input.4Logic DiagramsLS174TL/F/64043LS175TL/F/640445Physical Dimensionsinches(millimeters)Ceramic Leadless Chip Carrier(E)Order Number 54LS174LMQB or 54LS175LMQBNS Package Number E20A16-Lead Ceramic Dual-In-Line Package(J)Order Number DM54LS174DMQB,54LS175DMQB,DM54LS174J or DM54LS175JNS Package Number J16A6Physical Dimensionsinches(millimeters)(Continued)16-Lead Small Outline Molded Package(M)Order Number DM74LS174M or DM74LS175MNS Package Number M16A16-Lead Molded Dual-In-Line Package(N)Order Number DM74LS174N or DM74LS175NNS Package Number N16E754LS174/DM54LS174/DM74LS174,54LS175/DM54LS175/DM74LS175Hex/Quad D Flip-Flops with ClearPhysical Dimensionsinches(millimeters)(Continued)16-Lead Ceramic Flat Package(W)Order Number 54LS174FMQB,54LS175FMQB,DM54LS174W or DM54LS175WNS Package Number W16ALIFE SUPPORT POLICYNATIONALS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORTDEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONALSEMICONDUCTOR CORPORATION.As used herein:1.Lifesupportdevicesorsystemsaredevicesor2.A critical component is any component of a lifesystems which,(a)are intended for surgical implantsupport device or system whose failure to perform caninto the body,or(b)support or sustain life,and whosebe reasonably expected to cause the failure of the lifefailure to perform,when properly used in accordancesupport device or system,or to affect its safety orwith instructions for use provided in the labeling,caneffectiveness.be reasonably expected to result in a significant injuryto the user.National SemiconductorNational SemiconductorNational SemiconductorNational SemiconductorCorporationEuropeHong Kong Ltd.Japan Ltd.1111 West Bardin RoadFax:(a49)0-180-530 85 8613th Floor,Straight Block,Tel:[phone]Arlington,TX 76017Email:Ocean Centre,5 Canton Rd.Fax:[phone]Tel:[phone]Deutsch Tel:(a49)0-180-530 85 85Tsimshatsui,KowloonFax:1(800)737-7018EnglishTel:(a49)0-180-532 78 32Hong KongFran3ais Tel:(a49)0-180-532 93 58Tel:[phone]ItalianoTel:(a49)0-180-534 16 80Fax:[phone]National does not assume any responsibility for use of any circuitry described,no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.