SCLS228O October   1995  – July 2024 SN54AHCT244 , SN74AHCT244

PRODMIX  

  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
    6. 5.6 Switching Characteristics
    7. 5.7 Noise Characteristics
    8. 5.8 Operating Characteristics
    9. 5.9 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
      1. 8.1.1 Typical Application
        1. 8.1.1.1 Design Requirements
        2. 8.1.1.2 Detailed Design Procedure
        3. 8.1.1.3 Application Curves
    2. 8.2 Power Supply Recommendations
    3. 8.3 Layout
      1. 8.3.1 Layout Guidelines
      2. 8.3.2 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

5.5 Electrical Characteristics

over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS VCC TA = 25°C SN54AHCT244 SN74AHCT244 UNIT
MIN TYP MAX MIN MAX MIN MAX
VOH IOH = –50 µA 4.5 V 4.4 4.5 4.4 4.4 V
IOH = –8 mA 3.94 3.8 3.8
VOL IOL = 50 µA 4.5 V 0.1 0.1 0.1 V
IOL = 8 mA 0.36 0.44 0.44
IOZ VO = VCC or GND 5.5 V ±0.25 ±2.5 ±2.5 µA
II VI = 5.5 V or GND 0 V to
5.5 V		 ±0.1 ±1(1) ±1 µA
ICC VI = VCC or GND, IO = 0 5.5 V 4 40 40 µA
∆ICC(2) One input at 3.4 V,
Other inputs at VCC or GND		 5.5 V 1.35 1.5 1.5 mA
Ci VI = VCC or GND 5 V 2.5 10 10 pF
Co VO = VCC or GND 5 V 3 pF
(1) On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
(2) This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.