ZHCSQ25E December   1982  – February 2022 SN54HC157 , SN74HC157

PRODUCTION DATA  

  1. 特性
  2. 说明
  3. Revision History
  4. Pin Configuration and Functions
  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. Parameter Measurement Information
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  8. Power Supply Recommendations
  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

Parameter Measurement Information

tpd is the maximum between tPLH and tPHL

GUID-70CB1ABA-6544-4F6E-A6F1-2510508E24D6-low.pngFigure 6-1 Load Circuit
GUID-47DCE7E8-F072-46FE-A700-D2B5738698F2-low.pngFigure 6-3 Voltage Waveform
Input Rise and Fall Times
GUID-5D524494-537F-474C-B7C2-0725A3C9E954-low.pngFigure 6-2 Voltage Waveforms
Propagation Delay and Output Transition Times

A. CL includes probe and test-fixture capacitance.

B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following charactersitics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns.

C. The outputs are measured one at a time with one input transition per measurement.