SLLSFX5 March   2026 TLIN821-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specification
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 ESD Ratings - IEC Specification
    4. 5.4 Thermal Information
    5. 5.5 Recommended Operating Conditions
    6. 5.6 Power Supply Characteristics
    7. 5.7 Electrical Characteristics
    8. 5.8 AC Switching 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  LIN
        1. 7.3.1.1 LIN Transmitter Characteristics
        2. 7.3.1.2 LIN Receiver Characteristics
          1. 7.3.1.2.1 Termination
      2. 7.3.2  TXD
      3. 7.3.3  RXD
      4. 7.3.4  VSUP
      5. 7.3.5  GND
      6. 7.3.6  EN
      7. 7.3.7  WAKE
      8. 7.3.8  INH
      9. 7.3.9  Local Faults
      10. 7.3.10 TXD Dominant Time-Out (DTO)
      11. 7.3.11 Bus Stuck Dominant System Fault: False Wake-Up Lockout
      12. 7.3.12 Thermal Shutdown
      13. 7.3.13 Under Voltage on VSUP
      14. 7.3.14 Unpowered Device
    4. 7.4 Device Functional Modes
      1. 7.4.1 Normal Mode
      2. 7.4.2 Sleep Mode
      3. 7.4.3 Standby Mode
      4. 7.4.4 Wake-Up Events
        1. 7.4.4.1 Local Wake-Up (LWU) using the WAKE Input Terminal
        2. 7.4.4.2 Wake-Up Request (RXD)
  9. 8 Application Information Disclaimer
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedures
        1. 8.2.2.1 Normal Mode Application Note
        2. 8.2.2.2 TXD Dominant State Time-Out Application Note
        3. 8.2.2.3 Standby Mode Application Note
      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
    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
    1.     PACKAGE OPTION ADDENDUM
    2. 11.1 Tape and Reel Information
    3. 11.2 Mechanical Data

7.4.4.2 Wake-Up Request (RXD)

When the TLIN821-Q1 encounters a wake-up event from the WAKE pin or the LIN bus, the RXD output is driven low until EN is asserted high. The device enters normal mode. Once the device enters normal mode, the wake-up event is cleared, and the RXD output is released. The RXD output is fully operation and reflects the receiver output from the LIN bus.