ZHCSQ38F December   1982  – February 2022 SN54HC251 , SN74HC251

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 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)
  • DB|16
  • PW|16
  • NS|16
  • N|16
  • D|16
散热焊盘机械数据 (封装 | 引脚)
订购信息

5.4 Electrical Characteristics

over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS(1) VCC (V) TA = 25°C SN54HC251 SN74HC251 UNIT
MIN TYP MAX MIN MAX MIN MAX
VOH IOH = −20 μA 2 1.9 1.998 1.9 1.9 V
4.5 4.4 4.499 4.4 4.4
6 5.9 5.999 5.9 5.9
IOH = −6 mA 4.5 3.98 4.3 3.7 3.84
IOH = −7.8 mA 6 5.48 5.8 5.2 5.34
VOL IOL = 20 μA 2 0.002 0.1 0.1 0.1 V
4.5 0.001 0.1 0.1 0.1
6 0.001 0.1 0.1 0.1
IOL = 6 mA 4.5 0.17 0.26 0.4 0.33
IOL = 7.8 mA 6 0.15 0.26 0.4 0.33
II VI = VCC or 0 6 ±0.1 ±100 ±1000 ±1000 nA
IOZ Vo = VCC or 0 6 ±0.01 ±0.5 ±10 ±5 μA
ICC VI = VCC or 0, IO = 0 6 8 160 80 μA
Ci 2 to 6 3 10 10 10 pF
(1) VI = VIH or VIL, unless otherwise noted.