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

8.2.2.1 Normal Mode Application Note

When using the TLIN821-Q1 in systems which are monitoring the RXD pin for a wake-up request, be very cautious during the mode transitions. The output of the RXD pin is indeterminate for the transition period between states as the receivers are switched. The application software must not look for an edge on the RXD pin indicating a wake-up request until tMODE_CHANGE has been met. This is shown in Figure 6-5