SLVSJG4 August   2025 SN74AC125

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4.   4
  5. 3 Description
  6. 4 Pin Configuration and Functions
  7. 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 Typical Characteristics
  8. 6 Parameter Measurement Information
  9. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Balanced CMOS 3-State Outputs
      2. 7.3.2 Standard CMOS Inputs
      3. 7.3.3 Clamp Diode Structure
    4. 7.4 Device Functional Modes
  10. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
        1. 8.2.1.1 Power Considerations
        2. 8.2.1.2 Input Considerations
        3. 8.2.1.3 Output Considerations
      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
  11. 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
  12. 10Revision History
  13. 11Mechanical, Packaging, and Orderable Information

4 Pin Configuration and Functions

SN74AC125 SN74AC125 BQA Package (Top View)Figure 4-1 SN74AC125 BQA Package (Top View)
SN74AC125 SN74AC125, PW Package (Top View)Figure 4-2 SN74AC125, PW Package (Top View)
Pin Functions
PIN TYPE(1) DESCRIPTION
NAME NO.
1OE 1 I Channel 1, active-low output enable
1A 2 I Channel 1, input A
1Y 3 O Channel 1, output Y
2OE 4 I Channel 2, active-low output enable
2A 5 I Channel 2, input B
2Y 6 O Channel 2, output Y
GND 7 G Ground
3Y 8 O Channel 3, output Y
3A 9 I Channel 3, input A
3OE 10 I Channel 3, active-low output enable
4Y 11 O Channel 4, output Y
4A 12 I Channel 4, input A
4OE 13 I Channel 4, active-low output enable
VCC 14 P Positive supply
Thermal Pad(2) — The thermal pad can be connected to GND or left floating. Do not connect to any other signal or supply.
(1) Signal Types: I = Input, O = Output, G = Ground, P = Power.
(2) BQA package only.