SCHS288A December   1998  – December 2024 CD54AC299 , CD54ACT299 , CD74AC299 , CD74AC323 , CD74ACT299

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Description
  4. 3 Pin Configuration and Functions
  5. 4 Specifications
    1. 4.1 Absolute Maximum Ratings
    2. 4.2 ESD Ratings
    3. 4.3 Recommended Operating Conditions:
    4. 4.4 Thermal Information
    5. 4.5 Static Electrical Characteristics, AC Series
    6. 4.6 Static Electrical Characteristics, ACT Series
    7. 4.7 Switching Characteristics, AC Series
    8. 4.8 Switching Characteristics, ACT Series
  6. 5 Parameter Measurement Information
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Power Supply Recommendations
    2. 7.2 Layout
      1. 7.2.1 Layout Guidelines
      2. 7.2.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support (Analog)
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.2.1 Layout Guidelines

  • Bypass capacitor placement
    • Place near the positive supply terminal of the device
    • Provide an electrically short ground return path
    • Use wide traces to minimize impedance
    • Keep the device, capacitors, and traces on the same side of the board whenever possible
  • Signal trace geometry
    • 8mil to 12mil trace width
    • Lengths less than 12cm to minimize transmission line effects
    • Avoid 90° corners for signal traces
    • Use an unbroken ground plane below signal traces
    • Flood fill areas around signal traces with ground
    • For traces longer than 12cm
      • Use impedance controlled traces
      • Source-terminate using a series damping resistor near the output
      • Avoid branches; buffer signals that must branch separately