SCES643I November   2006  – December 2024 TXB0108

ADVANCE INFORMATION  

  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  Handling Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics
    6. 5.6  Timing Requirements: VCCA = 1.2 V
    7. 5.7  Timing Requirements: VCCA = 1.5 V ± 0.1 V
    8. 5.8  Timing Requirements: VCCA = 1.8 V ± 0.15 V
    9. 5.9  Timing Requirements: VCCA = 2.5 V ± 0.2 V
    10. 5.10 Timing Requirements: VCCA = 3.3 V ± 0.3 V
    11. 5.11 Switching Characteristics: VCCA = 1.2 V
    12. 5.12 Switching Characteristics: VCCA = 1.5 V ± 0.1 V
    13. 5.13 Switching Characteristics: VCCA = 1.8 V ± 0.15 V
    14. 5.14 Switching Characteristics: VCCA = 2.5 V ± 0.2 V
    15. 5.15 Switching Characteristics: VCCA = 3.3 V ± 0.3 V
    16. 5.16 Operating Characteristics
    17. 5.17 Typical Characteristics
  7. 6 Parameter Measurement Information
  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 Pullup or Pulldown 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
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Support Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  13. 12Revision History
  14. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Package Addendum
      1. 13.1.1 Tape and Reel Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • ZXY|20
  • NME|20
  • YZP|20
  • DQS|20
  • PW|20
  • RGY|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

9 Power Supply Recommendations

During operation, ensure that VCCA ≤ VCCB at all times. During power-up sequencing, VCCA ≥ VCCB does not damage the device, so any power supply can be ramped up first. The TXB0108-Q1 has circuitry that disables all output ports when either VCC is switched off (VCCA/B = 0 V).

The output-enable (OE) input circuit is designed so that it is supplied by VCCA and when the (OE) input is low, all outputs are placed in the high-impedance state. To ensure the high-impedance state of the outputs during power-up or power-down, the OE input pin must be tied to GND through a pulldown resistor and must not be enabled until VCCA and VCCB are fully ramped and stable. The minimum value of the pulldown resistor to ground is determined by the current-sourcing capability of the driver.