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    74AHC74; 74AHCT74

    Dual D-type flip-flop with set and reset; positive-edge trigger

    The 74AHC74; 74AHCT74 is a high-speed Si-gate CMOS device and is pin compatible with Low-Power Schottky TTL (LSTTL). It is specified in compliance with JEDEC standard No. 7-A.

    The 74AHC74; 74AHCT74 is a dual positive-edge triggered, D-type flip-flop with individual data inputs (D), clock inputs (CP), set inputs (SD) and reset inputs (RD). It also has complementary outputs (Q and Q).

    The set and reset are asynchronous active LOW inputs that operate independent of the clock input. Information on the data input is transferred to the Q output on the LOW to HIGH transition of the clock pulse. The data inputs must be stable one set-up time prior to the LOW to HIGH clock transition for predictable operation.

    Schmitt-trigger action in the clock input makes the circuit highly tolerant to slower clock rise and fall times.

    特性

    • Balanced propagation delays

    • All inputs have Schmitt-trigger actions

    • Inputs accept voltages higher than VCC

    • Input levels:

      • For 74AHC74: CMOS level

      • For 74AHCT74: TTL level

    • ESD protection:

      • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

      • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V

    • Multiple package options

    • Specified from -40 °C to +85 °C and from -40 °C to +125 °C

    参数类型

    Type numberProduct statusVCC (V)Logic switching levelsOutput drive capability (mA)tpd (ns)fmax (MHz)Power dissipation considerationsTamb (°C)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
    74AHC74BQProduction2.0 - 5.5CMOS± 83.7170low-40~12510620.974DHVQFN14
    74AHC74DProduction2.0 - 5.5CMOS± 83.7170low-40~12510820.166SO14
    74AHC74PWProduction2.0 - 5.5CMOS± 83.7170low-40~1251417.868TSSOP14
    74AHCT74BQProduction4.5 - 5.5TTL± 83.3160low-40~12510620.974DHVQFN14
    74AHCT74DProduction4.5 - 5.5TTL± 83.3160low-40~12510820.166SO14
    74AHCT74PWProduction4.5 - 5.5TTL± 83.3160low-40~1251417.868TSSOP14

    封装

    型号封装尺寸版本回流焊/波峰焊包装状态标示可订购的器件编号，（订购码(12NC)）
    74AHC74BQ
    DHVQFN14
    (SOT762-1)     		SOT762-1SOT762-1_115ActiveAHC7474AHC74BQ,115
    ( 9352 788 07115 )
    74AHC74D
    SO14
    (SOT108-1)     		SOT108-1SO-SOJ-REFLOW
    SO-SOJ-WAVE
    		SOT108-1_118Active74AHC74D74AHC74D,118
    ( 9352 630 78118 )
    74AHC74PW
    TSSOP14
    (SOT402-1)     		SOT402-1SSOP-TSSOP-VSO-WAVE
    		SOT402-1_118ActiveAHC7474AHC74PW,118
    ( 9352 630 79118 )
    74AHCT74BQ
    DHVQFN14
    (SOT762-1)     		SOT762-1SOT762-1_115ActiveAHT7474AHCT74BQ,115
    ( 9352 788 09115 )
    74AHCT74D
    SO14
    (SOT108-1)     		SOT108-1SO-SOJ-REFLOW
    SO-SOJ-WAVE
    		SOT108-1_118Active74AHCT74D74AHCT74D,118
    ( 9352 630 76118 )
    74AHCT74PW
    TSSOP14
    (SOT402-1)     		SOT402-1SSOP-TSSOP-VSO-WAVE
    		SOT402-1_118ActiveAHCT7474AHCT74PW,118
    ( 9352 630 77118 )

    下表中的版本已停产。参见表 停产信息 了解更多信息。

    型号封装尺寸版本回流焊/波峰焊包装状态标示可订购的器件编号，（订购码(12NC)）
    74AHCT74D
    SO14
    (SOT108-1)     		SOT108-1SO-SOJ-REFLOW
    SO-SOJ-WAVE
    		SOT108-1_112Withdrawn / End-of-life74AHCT74D74AHCT74D,112
    ( 9352 630 76112 )
    74AHCT74PW
    TSSOP14
    (SOT402-1)     		SOT402-1SSOP-TSSOP-VSO-WAVE
    		SOT402-1_112Withdrawn / End-of-lifeAHCT7474AHCT74PW,112
    ( 9352 630 77112 )

    停产信息

    型号可订购的器件编号，（订购码(12NC)）最后一次购买日期最后一次交货日期替代产品状态备注
    74AHC74D9352630781122021-12-312022-06-3074AHC74D
      74AHC74PW9352630791122021-12-312022-06-3074AHC74PW
        74AHCT74D9352630761122021-12-312022-06-3074AHCT74D
          74AHCT74PW9352630771122021-12-312022-06-3074AHCT74PW

            环境信息

            型号可订购的器件编号化学成分RoHSRHF指示符无铅转换日期
            74AHC74BQ74AHC74BQ,11574AHC74BQAlways Pb-free
            74AHC74D74AHC74D,11874AHC74Dweek 32, 2004
            74AHC74PW74AHC74PW,11874AHC74PWweek 10, 2005
            74AHCT74BQ74AHCT74BQ,11574AHCT74BQAlways Pb-free
            74AHCT74D74AHCT74D,11874AHCT74Dweek 32, 2004
            74AHCT74PW74AHCT74PW,11874AHCT74PWweek 10, 2005

            下表中的版本已停产。参见表 停产信息 了解更多信息。

            型号可订购的器件编号化学成分RoHSRHF指示符无铅转换日期
            74AHCT74D74AHCT74D,11274AHCT74Dweek 32, 2004
            74AHCT74PW74AHCT74PW,11274AHCT74PWweek 10, 2005
            品质及可靠性免责声明

            文档 (10)

            文件名称标题类型日期
            74AHC_AHCT74Dual D-type flip-flop with set and reset; positive-edge triggerData sheet2024-03-07
            ahc74ahc74 IBIS modelIBIS model2013-04-07
            ahct74ahct74 IBIS modelIBIS model2013-04-07
            SOT762-1plastic, leadless dual in-line compatible thermal enhanced very thin quad flat package; 14 terminals; 0.5 mm pitch; 2.5 x 3 x 1 mm bodyPackage information2023-04-05
            SSOP-TSSOP-VSO-WAVEFootprint for wave solderingWave soldering2009-10-08
            SOT402-1plastic, thin shrink small outline package; 14 leads; 0.65 mm pitch; 5 mm x 4.4 mm x 1.2 mm bodyPackage information2023-11-07
            SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
            SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
            WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
            SOT108-1plastic, small outline package; 14 leads; 1.27 mm pitch; 8.65 mm x 3.9 mm x 1.75 mm bodyPackage information2023-11-07

            支持

            如果您需要设计/技术支持，请告知我们并填写 应答表, 我们会尽快回复您。

            模型

            文件名称标题类型日期
            ahc74ahc74 IBIS modelIBIS model2013-04-07
            ahct74ahct74 IBIS modelIBIS model2013-04-07

            样品

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