SCES642L December   2007  – November 2024 TXS0108E

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: TA = –40°C to 85°C
    6. 5.6  Timing Requirements: VCCA = 1.5V ± 0.1 V
    7. 5.7  Timing Requirements: VCCA = 1.8V ± 0.15V
    8. 5.8  Timing Requirements: VCCA = 2.5V ± 0.2V
    9. 5.9  Timing Requirements: VCCA = 3.3V ± 0.3V
    10. 5.10 Switching Characteristics: VCCA = 1.5V ± 0.1V
    11. 5.11 Switching Characteristics: VCCA = 1.8V ± 0.15V
    12. 5.12 Switching Characteristics: VCCA = 2.5V ± 0.2V
    13. 5.13 Switching Characteristics: VCCA = 3.3V ± 0.3V
    14. 5.14 Operating Characteristics: VCCA = 1.5V to 3.3V, VCCB = 1.5V to 3.3V
    15. 5.15 Typical Characteristics
  7. 6 Parameter Measurement Information
    1. 6.1 Load Circuits
    2. 6.2 Voltage Waveforms
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Architecture
      2. 7.3.2 Input Driver Requirements
      3. 7.3.3 Output Load Considerations
      4. 7.3.4 Enable and Disable
      5. 7.3.5 Pull-up or Pull-down Resistors on I/O Lines
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      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
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.2.2 Detailed Design Procedure

To begin the design process, determine the following:

  • Input voltage range
    • Use the supply voltage of the device that is driving the TXS0108E device to determine the input voltage range. For a valid logic high the value must exceed the VIH of the input port. For a valid logic low the value must be less than the VIL of the input port.
  • Output voltage range
    • Use the supply voltage of the device that the TXS0108E device is driving to determine the output voltage range.
    • The TXS0108E device has smart internal pull-up resistors. External pull-up resistors can be added to reduce the total RC of a signal trace if necessary.
  • An external pull-down resistor decreases the output VOH and VOL. Use Equation 1 to calculate the VOH as a result of an external pull-down resistor.
    Equation 1. VOH = VCCx × RPD / (RPD + 4kΩ)