SCLS020H March   1984  – December 2022 SN54HCT245 , SN74HCT245

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Switching Characteristics: CL = 50 pF
    7. 6.7 Switching Characteristics: CL = 150 pF
    8. 6.8 Operating Characteristics
    9. 6.9 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Related Links
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

6.4 Thermal Information

THERMAL METRIC(1) SNx4HCT245 UNIT
J
(CDIP)		 W
(CFP)		 FK
(LCCC)		 DB
(SSOP)		 DW
(SOIC)		 N
(PDIP)		 NS
(SO)		 PW
(TSSOP)		 DGS
(VSSOP)
20 PINS 20 PINS 20 PINS 20 PINS 20 PINS 20 PINS 20 PINS 20 PINS 20 PINS
RθJA Junction-to-ambient thermal resistance — — — 84.6 70.4 43.4 68.9 94.9 118.4 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 38.7 60.8 37.1 44.3 36.5 29.5 34.7 30.2 57.7 °C/W
RθJB Junction-to-board thermal resistance 49.8 100.4 36.1 40.2 38.1 24.3 36.4 45.7 73.1 °C/W
ψJT Junction-to-top characterization parameter — — — 11.1 11.3 15 11.6 1.5 5.7 °C/W
ψJB Junction-to-board characterization parameter — — — 39.7 37.7 24.2 36 45.1 72.7 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance 11.5 8.5 4.3 — — — — — — °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report.