SCLS263R December   1995  – October 2023 SN54AHCT74 , SN74AHCT74

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  Timing Requirements
    7. 6.7  Switching Characteristics
    8. 6.8  Noise Characteristics
    9. 6.9  Operating Characteristics
    10. 6.10 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
      1. 8.3.1 TTL-Compatible CMOS Inputs
      2. 8.3.2 Balanced CMOS Push-Pull Outputs
      3. 8.3.3 Clamp Diode Structure
    4. 8.4 Device Functional Modes
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Input Considerations
        2. 9.2.1.2 Output Considerations
        3. 9.2.1.3 Power Considerations
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
        1. 9.4.1.1 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|14
  • RGY|14
  • DB|14
  • DGV|14
  • PW|14
  • BQA|14
  • N|14
  • NS|14
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5 Pin Configuration and Functions

GUID-580380D3-EF8F-4896-A7AC-D764F4C10250-low.gif Figure 5-1 Title
Table 5-1 Pin Functions
PIN TYPE(1) DESCRIPTION
NAME SN74AHCT74 SN54AHCT74
D, DB, DGV,
N, NS, PW		 RGY,

BQA

 J, W FK
1CLR 1 1 1 2 I 1A Input
1D 2 2 2 3 I 1B Input
1CLK 3 3 3 4 O 1Y Output
1PRE 4 4 4 6 I 2A Input
1Q 5 5 5 8 I 2B Input
1Q 6 6 6 9 O 2Y Output
2Q 8 8 8 12 O 3Y Output
2Q 9 9 9 13 I 3A Input
2PRE 10 10 10 14 I 3B Input
2CLK 11 11 11 16 O 4Y Output
2D 12 12 12 18 I 4A Input
2CLR 13 13 13 19 I 4B Input
GND 7 7 7 10 — Ground Pin
NC — — — 1, 5, 7,
11, 15, 17		 — No Connection
VCC 14 14 14 20 — Power Pin
Thermal Pad — PAD — — — Thermal Pad
(1) Signal Types: I = Input, O = Output, I/O = Input or Output.