SCES642K December   2007  – April 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

7.3.2 Input Driver Requirements

The continuous DC-current sinking capability is determined by the external system-level open-drain (or push-pull) drivers that are interfaced to the TXS0108E I/O pins. Because the high bandwidth of these bidirectional I/O circuits is used to facilitate this fast change from an input to an output and an output to an input, they have a modest DC-current sourcing capability of hundreds of micro-amperes, as determined by the internal pull-up resistors.

The fall time (tfA, tfB) of a signal depends on the edge-rate and output impedance of the external device driving TXS0108E data I/Os, as well as the capacitive loading on the data lines.

Similarly, the tPHL and maximum data rates also depend on the output impedance of the external driver. The values for tfA, tfB, tPHL, and maximum data rates in the data sheet assume that the output impedance of the external driver is less than 50Ω.