电脑板针脚定义和ic住友

Triple3-inputNORForacompletedatasheet,pleasealsoTheIC0674HC/HCT/HCU/HCMOSLogicFamilySpecificationsTheIC0674HC/HCT/HCU/HCMOSLogicPackageInformationTheIC0674HC/HCT/HCU/HCMOSLogicPackageOutlinesProductFileunderIntegratedCircuits,

DecemberTriple3-inputTriple3-inputNORICCcategory:

andarepompatiblewithlowpowerSchottkyTTL(LSTTL).TheyarespecifiedompliancewithJEDECstandardno.7A.The74HC/HCT27providethe3-inputNORGND=0V;Tamb=25C;tr=tf=6tPHL/propagationdelaynA,nB,nCtoCL=15pF;VCC=58Cnputnotes1andCPDisusedtodeterm hedynamicpowerdissipation(PDinW):PD=CPDVCC2fi(CLVCC2fO)where:fi=inputfrequencyinMHzfo=outputfrequencyin(CLVCC2fo)=sumofoutputsCL=outputloadcapacitanceinpFVCC=supplyvoltageinVForHCtheconditionisVI=GNDtoForHCTtheconditionisVI=GNDtoVCC1.5PINPINNAMEAND1,3,2,4,13,5,712,6,1Ato3A1Bto3B1Cto3C1Ytodatainputsdatainputsdatainputsground(0data Fig.1Fig.1 Fig.2LogicFig.3IEClogicFig.4FunctionalFig.4FunctionalFig.5Logicdiagram(oneLLLHXXHLXHXLHXXL1.H=HIGHvoltagelevelL=LOWvoltagelevelX=don’tcareFortheDCcharacteristicssee“74HC/HCT/HCU/HCMOSLogicFamilySpecifications”.Outputcapability:standardICCcategory:GND=0V;tr=tf=6ns;CL=50TambTEST40to40totPHL/nA,nB,nCto8tTHL/76FortheDCcharacteristicssee“74HC/HCT/HCU/HCMOSLogicFamilySpecifications”.Outputcapability:standardICCcategory:NotetoHCTThevalueofadditionalquiescentsupplycurrent(ICC)foraunitloadof1isgiveninthefamilyspecifications.TodetermineI erinput,multiplythisvaluebytheunitloadcoefficientshowninthetablebelow.UNITLOADnA,nB,GND=0V;tr=tf=6ns;CL=50TambTEST40to40totPHL/nA,nB,nCtotTHL/7AC(1)(1)HC:VM=50%;VI=GNDtoVCC.HCT:VM=1.3V;VI=GNDto3V.Fig.6Waveformsshowingtheinput(nA,nB,nC)tooutput(nY)propagationdelaysandtheoutputtransitionIC0674HC/HCT/HCU/HCMOSIC0674HC/HCT/HCU/HCMOSIC0674HC/HCT/HCU/HCMOS逻辑封装外形3199012ICC：SSIQUICKREFERENCEDATAGND0V；坦姆=25tr=tf=6ns述74HC/HCT27是高速硅栅极CMOS器件，并且与低功耗肖特基TTL(LSTTL)引脚兼容。它们的指定符合JEDEC标准编号。7A.74HC/HCT273NORHCHCTtPHL/tPLHnA、nB、nCnYCL15pF；VCC5V810nsCI输入电容3.53.5pF每个栅极的CPD功耗电容注1和22430pF注CPD（PDμWPDCPDVCC2×fi+Σ(CL×VCC2×fO)fi（MHz）fo出频率（MHz）Σ(CLVCC2×fo)CL（pFVCC单位）=电源电压（V）HCVIGNDVCCHCTVIGNDVCC.1.5V阅“74HC/HCT/HCU/HCMOS逻辑封装信息”。PIN1,3,92,4,1013,5,11712,6,8141A3A1B3B1C3CGND1Y3Y0V)nAnBnCnYLLLHXXHLXHXLHXXL注释1.HLX74HC/HCT/HCU/HCMOSICC：SSI74HCGND0V；tr=tf=6CL=50pF流特性，请参阅“74HC/HCT/HCU/HCMOS逻辑系列规格”。TambC)74HCVCC(V)25.4085.40tPHL/tPLH2890115135ns2.0nA、nB、nCnY101823278152023tTHL/tTLH197595110ns2.071519226131619ICC：SSIHCT1源电流(ΔICC)值。要确定每个输入的ΔICC，请将该值乘以下表中所示的单位负载系数。输入单元负载系数nA、nB、nC1.5074HCTGND0Vtr=tf=6CL=50pFTambC)74HCTVCCV