SLVSJ01 June   2025 TXG8122-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions—TXG8122-Q1
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Electrical Characteristics
    5. 5.5  Supply Current Characteristics
    6. 5.6  Switching Characteristics, VCCA = 3.3 ± 0.3V
    7. 5.7  Switching Characteristics, VCCA = 5 ± 0.5V
    8. 5.8  Electrical Characteristics (85°C)
    9. 5.9  Supply Current Characteristics (85°C)
    10. 5.10 Switching Characteristics, VCCA = 3.3 ± 0.3V (85°C)
    11. 5.11 Switching Characteristics, VCCA = 5 ± 0.5V (85°C)
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Bidirectional Level Translation
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Regulatory Requirements
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

7.1 Application Information

The TXG8122-Q1 is used for level translation, enabling communication between devices or systems operating at different interface and ground voltages. The TXG8122-Q1 device is ideal for use in applications where an open-drain driver is connected to the data I/Os. Figure 7-1 is an example of two systems that translate from 3.3V to 5.5V across an I2C interface while also seeing a ground shift of -5V on GND2 while GND1 remains at 0V. The ground shift occurs due to the parasitic resistance of the cable used to connect the 48V battery ground and 12V battery ground to the chassis of the car.