ZHCSQ80D November   1998  – March 2022 CD54HC251 , CD54HCT251 , CD74HC251 , CD74HCT251

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. 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)
  • J|16
散热焊盘机械数据 (封装 | 引脚)
订购信息

Electrical Characteristics

PARAMETER TEST CONDITIONS(1) VCC
(V)
25°C –40°C to 85°C –55°C to 125°C UNIT
MIN TYP MAX MIN MAX MIN MAX
HC TYPES
VIH High-level input voltage 2 1.5 1.5 1.5 V
4.5 3.15 3.15 3.15 V
6 4.2 4.2 4.2 V
VIL Low-level input voltage 2 0.5 0.5 0.5 V
4.5 1.35 1.35 1.35 V
6 1.8 1.8 1.8 V
VOH High-level output voltage

CMOS loads

IOH = – 20μA 2 1.9 1.9 1.9 V
IOH = – 20μA 4.5 4.4 4.4 4.4 V
IOH = – 20μA 6 5.9 5.9 5.9 V
High-level output voltage

TTL loads

IOH = – 6mA 4.5 3.98 3.84 3.7 V
IOH = – 7.8mA 6 5.48 5.34 5.2 V
VOL Low-level output voltage

CMOS loads

IOL = 20μA 2 0.1 0.1 0.1 V
IOL = 20μA 4.5 0.1 0.1 0.1 V
IOL = 20μA 6 0.1 0.1 0.1 V
Low-level output voltage

TTL loads

IOL = 6mA 4.5 0.26 0.33 0.4 V
IOL = 7.8mA 6 0.26 0.33 0.4 V
II Input leakage current VCC or GND 6 ±0.1 ±1 ±1 µA
ICC Supply current VCC or GND 6 8 80 160 µA
IOZ Three-state leakage current 6 ±0.5 ±0.5 ±10 µA
HCT TYPES
VIH High-level input voltage 4.5 to 5.5 2 2 2 V
VIL Low-level input voltage 4.5 to 5.5 0.8 0.8 0.8 V
VOH High-level output voltage

CMOS loads

IOH = – 20μA 4.5 4.4 4.4 4.4 V
High-level output voltage

TTL loads

IOH = – 6mA 4.5 3.98 3.84 3.7 V
VOL Low-level output voltage

CMOS loads

IOL = 20μA 4.5 0.1 0.1 0.1 V
Low-level output voltage

TTL loads

IOL = 6mA 4.5 0.26 0.33 0.4 V
II Input leakage current VCC and GND 5.5 ±0.1 ±1 ±1 µA
ICC Supply Current VCC and GND 5.5 8 80 160 µA
IOZ Three-state leakage current 6 ±0.5 ±5.0 ±10 µA
∆ICC (2)(3) Additional supply current per input pin S0, S1, S2 4.5 to 5.5 55 198 247.5 269.5 µA
I0 - I7 4.5 to 5.5 50 180 225 245 µA
OE 4.5 to 5.5 265 954 1192.5 1298.5 µA
VI = VIH or VIL, unless otherwise noted.
For dual-supply systems theoretical worst case (VI = 2.4 V, VCC = 5.5 V) specification is 1.8 mA..
Inputs held at VCC – 2.1.