电子技术-芯片资料-74180.pdf

TL/F/6559DM54180/DM74180 9-Bit Parity Generators/CheckersJune 1989DM54180/DM74180 9-Bit Parity Generators/CheckersGeneral DescriptionThese universal 9-bit(8 data bits plus 1 parity bit)paritygenerators/checkers feature odd/even outputs and controlinputs to facilitate operation in either odd or even parity ap-plications.Depending on whether even or odd parity is be-ing generated or checked,the even or odd input can beutilized as the parity or 9th-bit input.The word-length capa-bility is easily expanded by cascading.Input buffers are provided so that each data input repre-sents only one normalized series 54/74 load.A full fan-outto 10 normalized series 54/74 loads is available from eachof the outputs at a low logic level.A fan-out to 20 normal-ized loads is provided at a high logic level to facilitate theconnection of unused inputs to used inputs.Connection DiagramDual-In-Line PackageTL/F/65591Order Number DM54180J,DM54180W or DM74180NSee NS Package Number J14A,N14A or W14BFunction TableInputsOutputsR of Hs atEvenOddRRA thru HEvenOddEvenHLHLOddHLLHEvenLHLHOddLHHLXHHLLXLLHHHeHigh Level,LeLow Level,XeDont CareC1995 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 Voltage5.5VOperating Free Air Temperature RangeDM54b55C toa125CDM740C 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 ConditionsSymbolParameterDM54180DM74180UnitsMinNomMaxMinNomMaxVCCSupply Voltage4.555.54.7555.25VVIHHigh Level Input Voltage22VVILLow Level Input Voltage0.80.8VIOHHigh Level Output Currentb0.8b0.8mAIOLLow Level Output Current1616mATAFree Air Operating Temperatureb55125070CElectrical Characteristicsover recommended operating free air temperature range(unless otherwise noted)SymbolParameterConditionsMinTypMaxUnits(Note 1)VIInput Clamp VoltageVCCeMin,IIe b12 mAb1.5VVOHHigh Level OutputVCCeMin,IOHeMax2.4VVoltageVILeMax,VIHeMinVOLLow Level OutputVCCeMin,IOLeMax0.4VVoltageVIHeMin,VILeMaxIIInput CurrentMaxVCCeMax,VIe5.5V1mAInput VoltageIIHHigh Level InputVCCeMaxOdd or Even80mACurrentVIe2.4VData40IILLow Level InputVCCeMaxOdd or Evenb3.2mACurrentVIe0.4VDatab1.6IOSShort CircuitVCCeMaxDM54b20b55mAOutput Current(Note 2)DM74b18b55ICCSupply CurrentVCCeMaxDM543449mA(Note 3)DM743456Note 1:All typicals are at VCCe5V,TAe25C.Note 2:Not more than one output should be shorted at a time.Note 3:ICCis measured with EVEN and ODD inputs at 4.5V,all other inputs and outputs open.2Switching Characteristicsat VCCe5V and TAe25C(See Section 1 for Test Waveforms and Output Load)SymbolParameterFrom(Input)ConditionsMinMaxUnitsTo(Output)tPLHPropagation Delay TimeData toCLe15 pF60nsLow to High Level OutputR EvenRLe400XtPHLPropagation Delay TimeData toOdd Input Low68nsHigh to Low Level OutputR EventPLHPropagation Delay TimeData to48nsLow to High Level OutputR OddtPHLPropagation Delay TimeData to38nsHigh to Low Level OutputR OddtPLHPropagation Delay TimeData toCLe15 pF48nsLow to High Level OutputR EvenRLe400XtPHLPropagation Delay TimeData toOdd Input High38nsHigh to Low Level OutputR EventPLHPropagation Delay TimeData to60nsLow to High Level OutputR OddtPHLPropagation Delay TimeData to68nsHigh to Low Level OutputR OddtPLHPropagation Delay TimeEven or Odd toCLe15 pF20nsLow to High Level OutputR Even or R OddRLe400XtPHLPropagation Delay TimeEven or Odd to10nsHigh to Low Level OutputR Even or R OddLogic DiagramTL/F/6559234Physical Dimensionsinches(millimeters)14-Lead Ceramic Dual-In-Line Package(J)Order Number DM54180JNS Package Number J14A14-Lead Molded Dual-In-Line Package(N)Order Number DM74180NNS Package Number N14A5DM54180/DM74180 9-Bit Parity Generators/CheckersPhysical Dimensionsinches(millimeters)14-Lead Ceramic Flat Package(W)Order Number DM54180WNS 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.