SCLS228N october   1995  – may 2023 SN54AHCT244 , SN74AHCT244

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 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
    7. 6.7 Noise Characteristics
    8. 6.8 Operating Characteristics
    9. 6.9 Typical Characteristics
  8. 7 Parameter Measurement Information
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Typical Application
        1. 9.1.1.1 Design Requirements
        2. 9.1.1.2 Detailed Design Procedure
        3. 9.1.1.3 Application Curves
    2. 9.2 Power Supply Recommendations
    3. 9.3 Layout
      1. 9.3.1 Layout Guidelines
      2. 9.3.2 Layout Example
  11. 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
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

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

6.6 Switching Characteristics

over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Load Circuit and Voltage Waveforms)
PARAMETER FROM
(INPUT)		 TO
(OUTPUT)		 LOAD
CAPACITANCE		 TA = 25°C SN54AHCT244 SN74AHCT244 UNIT
MIN TYP MAX MIN MAX MIN MAX
tPLH A Y CL = 15 pF 5.4(1) 7.4(1) 1(1) 8.5(1) 1 8.5 ns
tPHL 5.4(1) 7.4(1) 1(1) 8.5(1) 1 8.5
tPZH OE Y CL = 15 pF 7.7(1) 10.4(1) 1(1) 12(1) 1 12 ns
tPZL 7.7(1) 10.4(1) 1(1) 12(1) 1 12
tPHZ OE Y CL = 15 pF 5(1) 9.4(1) 1(1) 10(1) 1 10 ns
tPLZ 5(1) 9.4(1) 1(1) 10(1) 1 10
tPLH A Y CL = 50 pF 5.9 8.4 1 9.5 1 9.5 ns
tPHL 5.9 8.4 1 9.5 1 9.5
tPZH OE Y CL = 50 pF 8.2 11.4 1 13 1 13 ns
tPZL 8.2 11.4 1 13 1 13
tPHZ OE Y CL = 50 pF 8.8 11.4 1 13 1 13 ns
tPLZ 8.8 11.4 1 13 1 13
tsk(o) CL = 50 pF 1(2) 1 ns
(1) On products compliant to MIL-PRF-38535, this parameter is not production tested.
(2) On products compliant to MIL-PRF-38535, this parameter does not apply.