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74HCT74DB

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.

此产品已停产

Alternatives

Features and benefits

  • 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

型号 Product status Package name
74HCT74DB End of life SSOP14

PCB Symbol, Footprint and 3D Model

Model Name 描述

封装

下表中的所有产品型号均已停产 。

型号 可订购的器件编号，（订购码(12NC)） 状态 标示 封装 外形图 回流焊/波峰焊 包装
74HCT74DB 74HCT74DB,112
(935175180112)		 Obsolete HCT74 SOT337-1
SSOP14
(SOT337-1) 		SOT337-1 SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
Not available
74HCT74DB,118
(935175180118)		 Obsolete HCT74 SOT337-1_118

环境信息

下表中的所有产品型号均已停产 。

型号 可订购的器件编号 化学成分 RoHS RHF指示符
74HCT74DB 74HCT74DB,112 74HCT74DB rohs rhf rhf
74HCT74DB 74HCT74DB,118 74HCT74DB rohs rhf rhf
品质及可靠性免责声明

Series

文档 (10)

文件名称 标题 类型 日期
74HC_HCT74 Dual D-type flip-flop with set and reset; positive edge-trigger Data sheet 2024-04-02
AN11044 Pin FMEA 74HC/74HCT family Application note 2019-01-09
hct74 74HCT74 IBIS model IBIS model 2022-10-21
Nexperia_package_poster Nexperia package poster Leaflet 2020-05-15
SSOP14_SOT337-1_mk plastic, shrink small outline package; 14 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body Marcom graphics 2017-01-28
SOT337-1 plastic, shrink small outline package; 14 leads; 0.65 mm pitch; 6.2 mm x 5.3 mm x 2 mm body Package information 2020-04-21
SSOP-TSSOP-VSO-REFLOW Footprint for reflow soldering Reflow soldering 2009-10-08
hc HC/HCT Spice model SPICE model 2022-02-17
HCT_USER_GUIDE HC/T User Guide User manual 1997-10-31
SSOP-TSSOP-VSO-WAVE Footprint for wave soldering Wave soldering 2009-10-08

支持

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模型

文件名称 标题 类型 日期
hct74 74HCT74 IBIS model IBIS model 2022-10-21
hc HC/HCT Spice model SPICE model 2022-02-17

PCB Symbol, Footprint and 3D Model

Model Name 描述

How does it work?

The interactive datasheets are based on the Nexperia MOSFET precision electrothermal models. With our interactive datasheets you can simply specify your own conditions interactively. Start by changing the values of the conditions. You can do this by using the sliders in the condition fields. By dragging the sliders you will see how the MOSFET will perform at the new conditions set.

交互式数据手册