ZHCSS45D November   1998  – April 2024 CD54AC245 , CD54ACT245 , CD74AC245 , CD74ACT245

PRODMIX  

  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. 4.6 Timing Diagrams
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Power Supply Recommendations
    2. 7.2 Layout
      1. 7.2.1 Layout Guidelines
      2. 7.2.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      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

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4.5 Switching Characteristics

Input tr, tf = 3ns, CL = 50pF (Worst Case). Over recommended operating free-air temperature range (unless otherwise noted)
(see Load Circuit and Voltage Waveforms)
PARAMETER VCC (V) -40°C TO 85°C -55°C TO 125°C UNIT
MIN TYP MAX MIN TYP MAX
AC TYPES
tPLH, tPHL Propagation delay, data to output 1.5 96 106 ns
3.3 3.2 10.8 3 11.9
5 2.2 7.7 2.1 8.5
tPLZ, tPHZ Propagation delay, output disable to output 1.5 159 175 ns
3.3 4.7 15.9 4.4 17.5
5 3.7 12.7 3.5 14
tPZL, tPZH Propagation delay, output enable to output 1.5 159 175 ns
3.3 5.6 19 5.3 21
5 3.7 12.7 3.5
VOHV

Minimum (Valley) VOH During switching of other outputs

(output under test not switching)

 5 4 at 25°C 4 at 25°C V
VOLP

Maximum (Peak) VOL During switching of other outputs

(output under test not switching)

 5 1 at 25°C 1 at 25°C V
CO Three-state output capacitance 15 15 pF
CI Input capacitance 10 10 pF
CPD Power dissipation capacitance 57 57 pF
ACT TYPES
tPLH, tPHL Propagation delay, data to output 5 2.7 9.1 2.5 10 ns
tPLZ, tPHZ Propagation delay, output disable to output 5 3.7 12.7 3.5 14 ns
tPZL, tPZH Propagation delay, output enable to output 5 3.8 13.1 3.6 14.4 ns
VOHV

Minimum (Valley) VOH During switching of other outputs

(output under test not switching)

 5 4 at 25°C 4 at 25°C V
VOLP

Maximum (Peak) VOL During switching of other outputs

(output under test not switching)

 5 1 at 25°C 1 at 25°C V
CO Three-state output capacitance 15 15 pF
CI Input capacitance 10 10 pF
CPD Power dissipation capacitance 57 57 pF
  1. Limits tested 100%
  2. 3.3V Min is at 3.6V, Max is at 3V
  3. 5V Min is at 5.5V, Max is at 4.5V
  4. CPD is used to determine the dynamic power consumption per channel
    • AC: PD = VCC2 fi (CPD + CL)
    • ACT: PD = VCC2 fi (CPD + CL) + VCC ∆ ICC where fi = input frequency, CL = output load capacitance, VCC = supply voltage