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74HC74; 74HCT74

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

The 74HC74 and 74HCT74 are dual positive edge triggered D-type flip-flop. They have individual data (nD), clock (nCP), set (nSD) and reset (nRD) inputs, and complementary nQ and nQ outputs. Data at the nD-input, that meets the set-up and hold time requirements on the LOW-to-HIGH clock transition, is stored in the flip-flop and appears at the nQ output. Schmitt-trigger action in the clock input, makes the circuit highly tolerant to slower clock rise and fall times. Inputs include clamp diodes that enable the use of current limiting resistors to interface inputs to voltages in excess of VCC.

特性

  • Wide supply voltage range from 2.0 to 6.0 V
  • CMOS low power dissipation
  • High noise immunity

  • Input levels:

    • For 74HC74: CMOS level

    • For 74HCT74: TTL level

  • Symmetrical output impedance

  • High noise immunity

  • Balanced propagation delays

  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
  • Complies with JEDEC standards:
    • JESD8C (2.7 V to 3.6 V)
    • JESD7A (2.0 V to 6.0 V)

  • 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
74HC74BQProduction2.0 - 6.0CMOS± 5.21482low-40~12510620.974DHVQFN14
74HC74DProduction2.0 - 6.0CMOS± 5.21482low-40~12510820.166SO14
74HC74PWProduction2.0 - 6.0CMOS± 5.21482low-40~1251417.867TSSOP14
74HCT74BQProduction4.5 - 5.5TTL± 41559low-40~12510620.974DHVQFN14
74HCT74DProduction4.5 - 5.5TTL± 41559low-40~12510820.166SO14
74HCT74PWProduction4.5 - 5.5TTL± 41559low-40~1251417.867TSSOP14

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)）
74HC74BQ
DHVQFN14
(SOT762-1) 		SOT762-1SOT762-1_115ActiveHC7474HC74BQ,115
( 9352 736 72115 )
74HC74D
SO14
(SOT108-1) 		SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_653Active74HC74D74HC74D,653
( 9337 133 80653 )
74HC74PW
TSSOP14
(SOT402-1) 		SOT402-1SSOP-TSSOP-VSO-WAVE
SOT402-1_118ActiveHC7474HC74PW,118
( 9351 751 30118 )
74HCT74BQ
DHVQFN14
(SOT762-1) 		SOT762-1SOT762-1_115ActiveHCT7474HCT74BQ,115
( 9352 736 15115 )
74HCT74D
SO14
(SOT108-1) 		SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_653Active74HCT74D74HCT74D,653
( 9337 133 90653 )
74HCT74PW
TSSOP14
(SOT402-1) 		SOT402-1SSOP-TSSOP-VSO-WAVE
SOT402-1_118ActiveHCT7474HCT74PW,118
( 9351 751 50118 )

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)）
74HC74D
SO14
(SOT108-1) 		SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_652Withdrawn / End-of-life74HC74D74HC74D,652
( 9337 133 80652 )
74HCT74D
SO14
(SOT108-1) 		SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
SOT108-1_652Withdrawn / End-of-life74HCT74D74HCT74D,652
( 9337 133 90652 )

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
74HC74D9337133806522021-12-312022-06-3074HC74D
    74HC74PW9351751301122021-12-312022-06-3074HC74PW
      74HCT74D9337133906522021-12-312022-06-3074HCT74D
        74HCT74PW9351751501122021-12-312022-06-3074HCT74PW

          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
          74HC74BQ74HC74BQ,11574HC74BQAlways Pb-free
          74HC74D74HC74D,65374HC74Dweek 13, 2005
          74HC74PW74HC74PW,11874HC74PWweek 10, 2005
          74HCT74BQ74HCT74BQ,11574HCT74BQAlways Pb-free
          74HCT74D74HCT74D,65374HCT74Dweek 30, 2004
          74HCT74PW74HCT74PW,11874HCT74PWweek 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
          74HC74D74HC74D,65274HC74Dweek 13, 2005
          74HCT74D74HCT74D,65274HCT74Dweek 30, 2004
          品质及可靠性免责声明

          文档 (13)

          文件名称标题类型日期
          74HC_HCT74Dual D-type flip-flop with set and reset; positive edge-triggerData sheet2024-04-02
          AN11044Pin FMEA 74HC/74HCT familyApplication note2019-01-09
          hc7474HC74 IBIS modelIBIS model2022-10-21
          hct7474HCT74 IBIS modelIBIS model2022-10-21
          hcHC/HCT Spice modelSPICE model2022-02-17
          HCT_USER_GUIDEHC/T User GuideUser manual1997-10-31
          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
          hc7474HC74 IBIS modelIBIS model2022-10-21
          hct7474HCT74 IBIS modelIBIS model2022-10-21
          hcHC/HCT Spice modelSPICE model2022-02-17

          样品

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