SCLS175I March   2003  – February 2025 SN54HCT244 , SN74HCT244

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics - SN54HCT244
    6. 5.6  Electrical Characteristics - SN74HCT244
    7. 5.7  Switching Characteristics: SN54HCT244
    8. 5.8  Switching Characteristics: SN74HCT244
    9. 5.9  Operating Characteristics
    10. 5.10 Typical Characteristics
  7. 6 Parameter Measurement Information
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DB|20
  • NS|20
  • N|20
  • DGS|20
  • DW|20
  • PW|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.6 Electrical Characteristics - SN74HCT244

over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS VCC TA = 25°C -55°C to 125°C UNIT
MIN TYP MAX MIN TYP MAX
VOH VI = VIH or VIL IOH = –20 µA 4.5 V 4.4 4.499 4.4 V
IOH = –6 mA 3.98 4.3 3.7
VOL VI = VIH or VIL IOL = 20 µA 4.5 V 0.001 0.1 0.1 V
IOL = 6 mA 0.17 0.26 0.4
II VI = VCC or 0 5.5 V ±0.1 ±100 ±1000 nA
IOZ VO = VCC or 0, VI = VIH or VIL 5.5 V ±0.01 ±0.5 ±10 µA
ICC VI = VCC or 0, IO = 0 5.5 V 8 160 µA
∆ICC(1) One input at 0.5 V or 2.4 V, Other inputs at 0 or VCC 5.5 V 1.4 2.4 3 mA
Ci 4.5 V to 5.5 V 3 10 10 pF
(1) 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.