SCLS063G November   1988  – August 2024 SN74HCT08

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
    6. 4.6 Operating Characteristics
  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 Documentation
    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

4.3 Thermal Information

THERMAL METRIC D (SOIC) DB (SSOP) N (PDIP) NS (SO) PW (TSSOP) UNIT
14 PINS 14 PINS 14 PINS 14 PINS 14 PINS
RθJA Junction-to-ambient thermal resistance(1) 138.7 114.8 103.8 129.3 157.6 °C/W
RθJC (top) Junction-to-case (top) thermal resistance 93.8 60 91.6 85.7 84.1 °C/W
RθJB Junction-to-board thermal resistance 94.7 63.8 83.5 89.9 100.8 °C/W
ΨJT Junction-to-top characterization parameter 49.1 19.7 71.1 48.2 27.5 °C/W
ΨJB Junction-to-board characterization parameter 94.3 63.1 83.4 89.4 100.2 °C/W
RθJC (bot) Junction-to-case (bottom) thermal resistance N/A N/A N/A N/A N/A °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC package thermal metrics application report.