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

5.4 Electrical Characteristics

PARAMETER TEST CONDITIONS(1) VCC (V) TA = 25°C SN54HCT138 SN74HCT138 UNIT
MIN TYP MAX MIN MAX MIN MAX
VOH High-level output voltage IOH = –20 μA 4.5 4.4 4.499 4.4 4.4 V
IOH = –4 mA 3.98 4.3 3.7 3.84
VOL Low-level output voltage IOL = 20 μA 4.5 0.001 0.1 0.1 0.1 V
IOL = 4 mA 0.17 0.26 0.4 0.33
II Input hold current VI = VCC or 0 5.5 ±0.1 ±100 ±1000 ±1000 nA
ICC Supply current VI = VCC or 0. IO = 0 5.5 8 160 80 μA
ΔICC(2) Supply-current change One input at 0.5 V or 2.4 V, Other inputs at 0 or VCC 5.5 1.4 2.4 3 2.9 mA
Ci Input capacitance 4.5 to 5.5 3 10 10 10 pF
(1) VI = VIH or VIL, unless otherwise noted.
(2) This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or VCC.