SLLSFX7 March   2026 TLIN829-Q1

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 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 (Local Interconnect Network) Bus
        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 (Transmit Input and Output)
      3. 7.3.3  RXD (Receive Output)
      4. 7.3.4  VSUP (Supply Voltage)
      5. 7.3.5  GND (Ground)
      6. 7.3.6  EN (Enable Input)
      7. 7.3.7  Protection Features
      8. 7.3.8  TXD Dominant Time Out (DTO)
      9. 7.3.9  Bus Stuck Dominant System Fault: False Wake Up Lockout
      10. 7.3.10 Thermal Shutdown
      11. 7.3.11 Under Voltage on VSUP
      12. 7.3.12 Unpowered Device and LIN Bus
    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 Wake Up Request (RXD)
        2. 7.4.4.2 Mode Transitions
  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 Standby Mode Application Note
    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. 11.1 Package Option Addendum
    2. 11.2 Tape and Reel Information
    3. 11.3 Mechanical Data

8.4.1 Layout Guidelines

  • Pin 1 (RXD): The pin is an open-drain output and requires an external pull-up resistor in the range of 1kΩ to 10kΩ to function properly. Note that the minimum value depends on the VIO supply used. See IOL in electrical specifications. If the microprocessor paired with the transceiver does not have an integrated pull-up, an external resistor must be placed between RXD and the regulated voltage supply for the microprocessor.
  • Pin 2 (EN): EN is an input pin that is used to place the device in a low-power sleep mode. If this feature is not used, the pin must be pulled high to the regulated voltage supply of the microprocessor through a series resistor between 1kΩ and 10kΩ. Additionally, a series resistor can be placed on the pin to limit current on the digital lines in the case of an over voltage fault.
  • Pin 3 (NC): Not Connected.
  • Pin 4 (TXD): The TXD pin is used to transmit the input signal from the microcontroller. A series resistor can be placed to limit the input current to the device in the case of an over-voltage on this pin. A capacitor to ground can be placed close to the input pin of the device to filter noise.
  • Pin 5 (GND): This is the ground connection for the device. This pin must be tied to the ground plane through a short trace with the use of two vias to limit total return inductance.
  • Pin 6 (LIN): This pin connects to the LIN bus. For responder mode applications a 220pF capacitor to ground is implemented. For commander mode applications an additional series resistor and blocking diode must be placed between the LIN pin and the VSUP pin. See Figure 8-1.
  • Pin 7 (VSUP): This is the supply pin for the device. A 100nF decoupling capacitor must be placed as close to the device as possible.
  • Pin 8 (NC): Not Connected.
Note:

All ground and power connections must be made as short as possible and use at least two vias to minimize the total loop inductance.