ZHCSWZ9A August   1998  – August 2024 CD74AC251

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 说明
  4. 3 Pin Configuration and Functions
  5. 4 Specifications
    1. 4.1 Absolute Maximum Ratings
    2. 4.2 Recommended Operating Conditions
    3. 4.3 Thermal Information
    4. 4.4 Electrical Characteristics
    5. 4.5 Switching Characteristics
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Functional Block Diagram
    2. 6.2 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Power Supply Recommendations
    2. 7.2 Layout
      1. 7.2.1 Layout Guidelines
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support (Analog)
      1. 8.1.1 Related Links
    2. 8.2 接收文档更新通知
    3. 8.3 支持资源
    4. 8.4 Trademarks
    5. 8.5 静电放电警告
    6. 8.6 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

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)
  • D|16
散热焊盘机械数据 (封装 | 引脚)

5 Parameter Measurement Information

CD74AC251 Three-state Propagation Delay Waveforms and Test Circuit

(1)

Figure 5-1 Three-state Propagation Delay Waveforms and Test Circuit
CD74AC251 Propagation Delay TimesFigure 5-2 Propagation Delay Times
CD74AC251 Propagation Delay Times
A. For AC Series Only: When VCC = 1.5V, RL = 1kΩ.
Figure 5-3 Propagation Delay Times
CD74AC
Input Level VCC
Input Switching Voltage, VS 0.5 VCC
Output Switching Voltage, VS 0.5 VCC
†. FOR AC SERIES ONLY: WHEN VCC = 1.5V, RL = 1kΩ
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