SCLS226L October   1995  – July 2024 SN54AHC244 , SN54AHC244-SP , SN74AHC244

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
    6. 5.6  Switching Characteristics, VCC = 3.3V ± 0.3V
    7. 5.7  Switching Characteristics, VCC = 5V ± 0.5V
    8. 5.8  Noise Characteristics
    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 Power Supply Recommendations
    2. 8.2 Layout
      1. 8.2.1 Layout Guidelines
      2. 8.2.2 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

4 Pin Configuration and Functions

SN54AHC244 SN74AHC244
SN54AHC244 SN74AHC244
Table 4-1 Pin Functions
PIN I/O DESCRIPTION
NO. NAME
1 1 OE I Output Enable 1
2 1A1 I 1A1 Input
3 2Y4 O 2Y4 Output
4 1A2 I 1A2 Input
5 2Y3 O 2Y3 Output
6 1A3 I 1A3 Input
7 2Y2 O 2Y2 Output
8 1A4 I 1A4 Input
9 2Y1 O 2Y1 Output
10 GND — Ground pin
11 2A1 I 2A1 Input
12 1Y4 O 1Y4 Output
13 2A2 I 2A2 Input
14 1Y3 O 1Y3 Output
15 2A3 I 2A3 Input
16 1Y2 O 1Y2 Output
17 2A4 I 2A4 Input
18 1Y1 O 1Y1 Output
19 2 OE I Output Enable 2
20 VCC — Power Pin