SCLS258N December   1995  – July 2024 SN54AHC138 , SN74AHC138

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Description
  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: VCC = 3.3V ± 0.3V
    6. 4.6 Switching Characteristics: VCC = 5V ± 0.5V
    7. 4.7 Operating Characteristics
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Function Table
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Power Supply Recommendations
    3. 7.3 Layout
      1. 7.3.1 Layout Guidelines
      2. 7.3.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support (Analog)
      1. 8.1.1 Related Links
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • W|16
  • J|16
  • FK|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4.5 Switching Characteristics: VCC = 3.3V ± 0.3V

over recommended operating free-air temperature range, VCC = 3.3V ± 0.3V (unless otherwise noted) (see Load Circuit and Voltage Waveforms)
PARAMETER FROM (INPUT) TO (OUTPUT) LOAD CAPACITANCE TA = 25°C SN54AHC138 SN74AHC138 UNIT
MIN TYP MAX MIN MAX MIN MAX
tPLH A, B, C Any Y CL = 15pF 8.2(1) 11.4(1) 1(1) 13(1) 1 13 ns
tPHL 8.2(1) 11.4(1) 1(1) 13(1) 1 13
tPLH G1 Any Y CL = 15pF 8.1(1) 12.8(1) 1(1) 15(1) 1 15 ns
tPHL 8.1(1) 12.8(1) 1(1) 15(1) 1 15
tPLH G2A, G2B Any Y CL = 15pF 8.2(1) 11.4(1) 1(1) 13.5(1) 1 13.5 ns
tPHL 8.2(1) 11.4(1) 1(1) 13.5(1) 1 13.5
tPLH A, B, C Any Y CL = 50pF 10 15.8 1 18 1 18 ns
tPHL 10 15.8 1 18 1 18
tPLH G1 Any Y CL = 50pF 10.6 16.3 1 18.5 1 18.5 ns
tPHL 10.6 16.3 1 18.5 1 18.5
tPLH G2A, G2B Any Y CL = 50pF 10.7 14.9 1 17 1 17 ns
tPHL 10.7 14.9 1 17 1 17
(1) On products compliant to MIL-PRF-38535, this parameter is not production tested.