SCLS171F March   1984  – March 2022 SN54HCT138 , SN74HCT138

PRODUCTION DATA  

  1. 1 Features
  2. 2 Description
  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 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 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • PW|16
  • NS|16
  • N|16
  • D|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.5 Switching Characteristics

CL = 50 pF. See Parameter Measurement Information
PARAMETER FROM
(INPUT)		 TO
(OUTPUT)		 VCC (V) TA = 25°C SN54HCT138 SN74HCT138 UNIT
MIN TYP MAX MIN MAX MIN MAX
tpd A, B or C Any Y 4.5 23 36 54 45 ns
5.5 17 32 49 34
Enable Any Y 4.5 22 33 50 42
5.5 18 30 45 38
tt Y 4.5 12 15 22 19 ns
5.5 11 14 20 17