ZHCSPU5G December   1982  – October 2022 SN54HCT74 , SN74HCT74

PRODUCTION DATA  

  1. 1 特性
  2. 2 说明
  3. 3 Revision History
  4. 4 Pin Configuration and Functions
  5. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions (1)
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 Timing Requirements
    6. 5.6 Switching Characteristics
    7. 5.7 Operating Characteristics
  6. 6 Parameter Measurement Information
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  8. 8 Power Supply Recommendations
  9. 9 Layout
    1. 9.1 Layout Guidelines
  10. 10Device and Documentation Support
    1. 10.1 接收文档更新通知
    2. 10.2 支持资源
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 术语表
  11. 11Mechanical, Packaging, and Orderable Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • J|14
  • FK|20
  • W|14
散热焊盘机械数据 (封装 | 引脚)
订购信息

5.5 Timing Requirements

overrecommended operating free-air temperature range (unless otherwise noted)
VCC TA = 25°C SN54HCT74(1) SN74HCT74 UNIT
MIN MAX MIN MAX MIN MAX
fclock Clock frequency 4.5 V 27 18 22 MHz
5.5 V 30 20 24
tw Pulse duration PRE or CLR low 4.5 V 16 24 20 ns
5.5 V 14 21 18
CLK high or low 4.5 V 18 27 23
5.5 V 16 24 21
tsu Setup time before CLK­↑ Data 4.5 V 12 18 15 ns
5.5 V 11 16 14
PRE or CLR inactive 4.5 V 0 0 0
5.5 V 0 0 0
th Hold time, data after CLK­↑ 4.5 V 0 0 0 ns
5.5 V 0 0 0
(1) SN54HCT74 is in product preview.