SCLS251J October   1995  – August 2024 SN54AHC240 , SN74AHC240

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Switching Characteristics
    7. 5.7 Noise Characteristics
    8. 5.8 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • NS|20
  • N|20
  • DW|20
  • PW|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.6 Switching Characteristics

CL = 50pF; over operating free-air temperature range; typical values measured at TA = 25°C (unless otherwise noted). See Parameter Measurement Information
PARAMETER FROM (INPUT) TO (OUTPUT) LOAD CAPACITANCE VCC TA = 25°C -40°C to 125°C UNIT
MIN TYP MAX MIN TYP MAX
tPLH A Y CL = 15pF 2V 19.5 1 23 ns
tPHL 19.5 1 23 ns
tPZH OE Y CL = 15pF 2V 25.5 1 30 ns
tPZL 25.5 1 30 ns
tPHZ OE Y CL = 15pF 2V 25.5 1 30 ns
tPLZ 25.5 1 30 ns
tPLH A Y CL = 15pF 3.3V 5.3 7.5 1 9 ns
tPHL 5.3 7.5 1 9 ns
tPZH OE Y CL = 15pF 3.3V 6.6 10.6 1 12.5 ns
tPZL 6.6 10.6 1 12.5 ns
tPHZ OE Y CL = 15pF 3.3V 7.8 11.5 1 12.5 ns
tPLZ 7.8 11.5 1 12.5 ns
tPLH A Y CL = 15pF 5V 3.6 5.5 1 6.5 ns
tPHL 3.6 5.5 1 6.5 ns
tPZH OE Y CL = 15pF 5V 4.7 7.3 1 8.5 ns
tPZL 4.7 7.3 1 8.5 ns
tPHZ OE Y CL = 15pF 5V 5.2 7.2 1 8.5 ns
tPLZ 5.2 7.2 1 8.5 ns
tPLH A Y CL = 50pF 2V 26.5 1 30 ns
tPHL 26.5 1 30 ns
tPZH OE Y CL = 50pF 2V 32.5 1 36.5 ns
tPZL 32.5 1 36.5 ns
tPHZ OE Y CL = 50pF 2V 32 1 36.5 ns
tPLZ 32 1 36.5 ns
tPLH A Y CL = 50pF 3.3V 7.8 11 1 12.5 ns
tPHL 7.8 11 1 12.5 ns
tPZH OE Y CL = 50pF 3.3V 9.1 14.1 1 16 ns
tPZL 9.1 14.1 1 16 ns
tPHZ OE Y CL = 50pF 3.3V 10.3 14 1 16 ns
tPLZ 10.3 14 1 16 ns
tPLH A Y CL = 50pF 5V 5.1 7.5 1 8.5 ns
tPHL 5.1 7.5 1 8.5 ns
tPZH OE Y CL = 50pF 5V 6.2 9.3 1 10.5 ns
tPZL 6.2 9.3 1 10.5 ns
tPHZ OE Y CL = 50pF 5V 6.7 9.2 1 10.5 ns
tPLZ 6.7 9.2 1 10.5 ns
tsk(o) CL = 50pF 2V 2 2 ns
tsk(o) CL = 50pF 3.3V 1.5 1.5 ns
tsk(o) CL = 50pF 5V 1 1 ns