SCES985A April   2025  – January 2026 TXS0108W-Q1

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, VCCA = 1.2V
    7. 5.7  Switching Characteristics, VCCA = 1.5 ± 0.1V
    8. 5.8  Switching Characteristics, VCCA = 1.8 ± 0.15V
    9. 5.9  Switching Characteristics, VCCA = 2.5 ± 0.2V
    10. 5.10 Switching Characteristics, VCCA = 3.3 ± 0.3V
    11. 5.11 Switching Characteristics: Tsk, TMAX
    12. 5.12 Operating Characteristics: VCCA = 1.5V to 3.3V, VCCB = 1.5V to 3.3V
  7. 6 Typical Characteristics
  8. 7 Parameter Measurement Information
    1. 7.1 Load Circuits
    2. 7.2 Voltage Waveforms
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Architecture
      2. 8.3.2 Input Driver Requirements
      3. 8.3.3 Output Load Considerations
      4. 8.3.4 Enable and Disable
      5. 8.3.5 Pull-up or Pull-down Resistors on I/O Lines
    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
      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
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1.      Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

8.3.5 Pull-up or Pull-down Resistors on I/O Lines

The TXS0108W-Q1 has the smart pull-up resistors dynamically change value based on whether a low or a high is being passed through the I/O line. Each A-port I/O has a pull-up resistor (RPUA) to VCCA and each B-port I/O has a pull-up resistor (RPUB) to VCCB. RPUA and RPUB have a value of 40kΩ when the output is driving low. RPUA and RPUB have a value of 4kΩ when the output is driving high. RPUA and RPUB are disabled when OE = Low. This feature provides lower static power consumption (when the I/Os are passing a low), and supports lower VOL values for the same size pass-gate transistor, and helps improve simultaneous switching performance.