ZHCSQ25E December   1982  – February 2022 SN54HC157 , SN74HC157

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 Switching Characteristics
    6. 5.6 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 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 接收文档更新通知
    3. 10.3 支持资源
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 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)
  • W|16
  • J|16
  • FK|20
散热焊盘机械数据 (封装 | 引脚)
订购信息

5.2 Recommended Operating Conditions(1)

SN54HC157 SN74HC157 UNIT
MIN NOM MAX MIN NOM MAX
VCC Supply voltage 2 5 6 2 5 6 V
VIH High-level input voltage VCC = 2 V 1.5 1.5 V
VCC = 4.5 V 3.15 3.15
VCC = 6 V 4.2 4.2
VIL Low-level input voltage VCC = 2 V 0.5 0.5 V
VCC = 4.5 V 1.35 1.35
VCC = 6 V 1.8 1.8
VI Input voltage 0 VCC 0 VCC V
VO Output voltage 0 VCC 0 VCC V
tt Input transition rise/fall time VCC = 2 V 1000 1000 ns
VCC = 4.5 V 500 500
VCC = 6 V 400 400
TA Operating free-air temperature -55 125 -40 85 °C
(1) All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report Implications of Slow or Floating SMOS Inputs, literature number SCBA004.
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