电子技术-芯片资料-74LS51.pdf

TL/F/636954LS51/DM74LS51 Dual 2-Wide 2-Input,2-Wide 3-Input AND-OR-INVERT GatesJune 198954LS51/DM74LS51 Dual 2-Wide 2-Input,2-Wide 3-Input AND-OR-INVERT GatesGeneral DescriptionThis device contains two independent combinations ofgates each of which performs the logic AND-OR-INVERTfunction.Each package contains one 2-wide 2-input andone 2-wide 3-input AND-OR-INVERT gates.Connection DiagramDual-In-Line PackageTL/F/63691Order Number 54LS51DMQB,54LS51FMQB,54LS51LMQB,DM74LS51M or DM74LS51NSee NS Package Number E20A,J14A,M14A,N14A or W14BFunction TableY1e(A1)(B1)(C1)a(D1)(E1)(F1)InputsOutputA1B1C1D1E1F1Y1HHHXXXLXXXHHHLOther CombinationsHY2e(A2)(B2)a(C2)(D2)InputsOutputA2B2C2D2Y2HHXXLXXHHLOther combinationsHHeHigh Logic LevelLeLow Logic LevelXeEither Low or High Logic LevelC1995 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 Range54LSb55C 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 ConditionsSymbolParameter54LS51DM74LS51UnitsMinNomMaxMinNomMaxVCCSupply Voltage4.555.54.7555.25VVIHHigh Level Input Voltage22VVILLow Level Input Voltage0.70.8VIOHHigh Level Output Currentb0.4b0.4mAIOLLow Level Output Current48mATAFree Air Operating Temperatureb55125070CElectrical Characteristicsover recommended operating free air temperature range(unless otherwise noted)SymbolParameterConditionsMinTypMaxUnits(Note 1)VIInput Clamp VoltageVCCeMin,IIe b18 mAb1.5VVOHHigh Level OutputVCCeMin,IOHeMax,54LS2.5VVoltageVILeMaxDM742.73.4VOLLow Level OutputVCCeMin,IOLeMax,54LS0.4VoltageVIHeMinDM740.350.5VIOLe4 mA,VCCeMin0.250.4IIInput CurrentMaxVCCeMax,VIe10V(54LS)0.1mAInput VoltageIIHHigh Level Input CurrentVCCeMax,VIe2.7V20mAIILLow Level Input CurrentVCCeMax,VIe0.4V54LSb0.40mADM74b0.36IOSShort CircuitVCCeMax54LSb20b100mAOutput Current(Note 2)DM74b20b100ICCHSupply Current withVCCeMax0.81.6mAOutputs HighICCLSupply Current withVCCeMax1.42.8mAOutputs LowNote 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.2Switching Characteristicsat VCCe5V and TAe25C(See Section 1 for Test Waveforms and Output Load)54LS51DM74LS51SymbolParameterCLe15 pF,CLe50 pF,UnitsRLe2 kXRLe2 kXMinMaxMinMaxtPLHPropagation Delay Time20418nsLow to High Level OutputtPHLPropagation Delay Time20315nsHigh to Low Level Output3Physical Dimensionsinches(millimeters)Ceramic Leadless Chip Carrier Package(E)Order Number 54LS51LMQBNS Package Number E20ACeramic Dual-In-Line Package(J)Order Number 54LS51DMQBNS Package Number J14A4Physical Dimensionsinches(millimeters)(Continued)14-Lead Small Outline Molded Package(M)Order Number DM74LS51MNS Package Number M14A14-Lead Molded Dual-In-Line Package(N)Order Number DM74LS51NNS Package Number N14A554LS51/DM74LS51 Dual 2-Wide 2-Input,2-Wide 3-Input AND-OR-INVERT GatesPhysical Dimensionsinches(millimeters)(Continued)14-Lead Ceramic Flat Package(W)Order Number 54LS51FMQBNS Package Number W14BLIFE 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.