54AC378PCQR中文资料

TL F 1023154AC 74AC378Parallel D Register with EnableMarch 199354AC 74AC378Parallel D Register with EnableGeneral DescriptionThe ’AC378is a 6-bit register with a buffered common En-able This device is similar to the ’AC174 but with common Enable rather than common Master ResetFeaturesY 6-bit high-speed parallel registerY Positive edge-triggered D-type inputsY Fully buffered common clock and enable inputsY Input clamp diodes limit high-speed termination effects YStandard Military Drawing (SMD) ’AC378 5962-91605Logic Symbols Connection DiagramsTL F 10231–1IEEE IECTL F 10231–4Pin Assignment for DIP SOIC and FlatpakTL F 10231–2Pin Assignmentfor LCCTL F 10231–3Pin Names DescriptionEEnable Input (Active LOW)D 0–D 5Data InputsCP Clock Pulse Input (Active Rising Edge)Q 0–Q 5OutputsFACT TM is a trademark of National Semiconductor Corporation C 1995National Semiconductor CorporationRRD-B30M75 Printed in U S AFunctional DescriptionThe’AC378consists of six edge-triggered D-type flip-flops with individual D inputs and Q inputs The Clock(CP)and Enable(E)inputs are common to all flip-flopsWhen the E input is LOW new data is entered into the register on the LOW-to-HIGH transition of the CP input When the E input is HIGH the register will retain the present data independent of the CP input Truth TableInputs OutputE CP D n Q nH L X No ChangeL L H HL L L LH e HIGH Voltage LevelL e LOW Voltage LevelX e ImmaterialL e LOW-to-HIGH Clock TransitionLogic DiagramTL F 10231–5 Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays2Absolute Maximum Ratings(Note1)If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage(V CC)b0 5V to a7 0V DC Input Diode Current(I IK)V I e b0 5V b20mA V I e V CC a0 5V a20mA DC Input Voltage(V I)b0 5V to V CC a0 5V DC Output Diode Current(I OK)V O e b0 5V b20mA V O e V CC a0 5V a20mA DC Output Voltage(V O)b0 5V to V CC a0 5V DC Output Sourceor Sink Current(I O)g50mA DC V CC or Ground Currentper Output Pin(I CC or I GND)g50mA Storage Temperature(T STG)b65 C to a150 C Junction Temperature(T J)CDIP175 C PDIP140 C Note1 Absolute maximum ratings are those values beyond which damage to the device may occur The databook specifications should be met without exception to ensure that the system design is reliable over its power supply temperature and output input loading variables National does not recom-mend operation of FACT TM circuits outside databook specifications Recommended Operating ConditionsSupply Voltage(V CC)’AC2 0V to6 0V Input Voltage(V I)0V to V CC Output Voltage(V O)0V to V CC Operating Temperature(T A)74AC b40 C to a85 C 54AC b55 C to a125 C Minimum Input Edge Rate(D V D t)’AC DevicesV IN from30%to70%of V CCV CC 3 3V 4 5V 5 5V125mV nsDC Characteristics for’AC Family Devices74AC54AC74ACSymbol Parameter V CCT A e a25 CT A e T A eUnits Conditions (V)b55 C to a125 C b40 C to a85 CTyp Guaranteed LimitsV IH Minimum High Level3 01 52 12 12 1V OUT e0 1V Input Voltage4 52 253 153 153 15V or V CC b0 1V5 52 753 853 853 85V IL Maximum Low Level3 01 50 90 90 9V OUT e0 1V Input Voltage4 52 251 351 351 35V or V CC b0 1V5 52 751 651 651 65V OH Minimum High Level3 02 992 92 92 9I OUT e b50m A Output Voltage4 54 494 44 44 4V5 55 495 45 45 4V IN e V IL or V IH3 02 562 42 46b12mA4 53 863 73 76V I OH b24mA5 54 864 74 76b24mA V OL Maximum Low Level3 00 0020 10 10 1I OUT e50m A Output Voltage4 50 0010 10 10 1V5 50 0010 10 10 1V IN e V IL or V IH3 00 360 50 4412mA4 50 360 50 44V I OL24mA5 50 360 50 4424mAI IN Maximum Input5 5g0 1g1 0g1 0m A V I e V CC GNDLeakage CurrentAll outputs loaded thresholds on input associated with output under test3DC Characteristics for’AC Family Devices(Continued)74AC54AC74ACSymbol Parameter V CC T A e T A e T A eUnits Conditions (V)a25 C b55 C to a125 C b40 C to a85 CTyp Guaranteed LimitsI OLD Minimum Dynamic5 55075mA V OLD e1 65V Max I OHD Output Current5 5b50b75mA V OHD e3 85V MinI CC Maximum Quiescent5 54 080 040 0m A V IN e V CCSupply Current or GNDMaximum test duration2 0ms one output loaded at a timeNote I IN and I CC 3 0V are guaranteed to be less than or equal to the respective limit 5 5V V CCI CC for54AC 25 C is identical to74AC 25 CAC Electrical Characteristics74AC54AC74ACV CC T A e a25 C T A e b55 C T A e b40 CSymbol Parameter(V)C L e50pF to a125 C to a85 C Units C L e50pF C L e50pFMin Typ Max Min Max Min Maxf max Maximum Clock3 312516095110MHz Frequency5 016020095145t PLH Propagation Delay3 32 58 511 01 512 02 512 5ns CP to Q n5 01 56 08 01 59 01 59 0t PHL Propagation Delay3 32 58 010 51 512 02 511 0ns CP to Q n5 01 55 57 51 59 01 58 0Voltage Range3 3is3 3V g0 3VVoltage Range5 0is5 0V g0 5VAC Operating Requirements74AC54AC74ACV CC T A e a25 C T A e b55 C T A e b40 CSymbol Parameter(V)C L e50pF to a125 C to a85 C Units C L e50pF C L e50pFTyp Guaranteed Minimumt s Setup Time HIGH or LOW3 31 53 04 03 5nsD n to CP5 01 02 04 02 5t h Hold Time HIGH or LOW3 31 02 04 02 0nsD n to CP5 01 02 04 02 0t s Setup Time HIGH or3 302 02 52 0ns LOW E to CP5 002 02 52 0t h Hold Time HIGH or3 31 02 04 02 0ns LOW E to CP5 01 02 04 02 0t w CP Pulse Width3 33 04 56 55 5ns HIGH or LOW5 02 03 56 54 0Voltage Range3 3is3 3V g0 3VVoltage Range5 0is5 0V g0 5VCapacitanceSymbol Parameter Typ Units ConditionsC IN Input Capacitance4 5pF V CC e OPENC PD Power Dissipation Capacitance28pF V CC e5 0V4Ordering InformationThe device number is used to form part of a simplified purchasing code where a package type and temperature range are defined as follows74AC378P C QRTemperature Range Family Special Variations74AC e Commercial X e Devices shipped in13 reels54AC e Military QR e Commercial grade device withburn-inDevice Type QB e Military grade with environmentaland burn-in processing shipped Package Codein tubesP e Plastic DIPD e Ceramic DIP Temperature RangeF e Flatpak C e Commercial(b40 C to a85 C)L e Leadless Ceramic Chip Carrier(LCC)M e Military(b55 C to a125 C)S e Small Outline(SOIC)5Physical Dimensions inches(millimeters)20-Terminal Ceramic Leadless Chip Carrier(L)NS Package Number E20A16-Lead Ceramic Dual-In-Line Package(D)NS Package Number J16A6Physical Dimensions inches(millimeters)(Continued)16-Lead Small Outline Integrated Circuit(S)NS Package Number M16A16-Lead Plastic Dual-In-Line Package(P)NS Package Number N16E754A C 74A C 378P a r a l l e l D R e g i s t e r w i t h E n a b l ePhysical Dimensions inches (millimeters)(Continued)Lit 11480516-Lead Ceramic Flatpak (F)NS Package Number W16ALIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or 2 A critical component is any component of a life systems which (a)are intended for surgical implant support device or system whose failure to perform can into the body or (b)support or sustain life and whose be reasonably expected to cause the failure of the life failure to perform when properly used in accordance support device or system or to affect its safety or with instructions for use provided in the labeling can effectivenessbe reasonably expected to result in a significant injury to the userNational Semiconductor National Semiconductor National Semiconductor National Semiconductor National Semiconductores National Semiconductor CorporationGmbHJapan LtdHong Kong LtdDo Brazil Ltda(Australia)Pty Ltd 2900Semiconductor DriveLivry-Gargan-Str 10Sumitomo Chemical13th Floor Straight Block Rue Deputado Lacorda Franco Building 16。