ZHCSMB3A March   2021  – April 2022 TLIN2021A-Q1

PRODMIX  

  1. 特性
  2. 应用
  3. 说明
  4. Revision History
  5. 说明(续)
  6. Pin Configuration and Functions
  7. Specification
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 ESD Ratings - IEC Specification
    4. 7.4 Thermal Information
    5. 7.5 Recommended Operating Conditions
    6. 7.6 Power Supply Characteristics
    7. 7.7 Electrical Characteristics
    8. 7.8 AC Switching Characteristics
    9. 7.9 Typical Curves
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1  LIN
        1. 9.3.1.1 LIN Transmitter Characteristics
        2. 9.3.1.2 LIN Receiver Characteristics
          1. 9.3.1.2.1 Termination
      2. 9.3.2  TXD
      3. 9.3.3  RXD
      4. 9.3.4  VSUP
      5. 9.3.5  GND
      6. 9.3.6  EN
      7. 9.3.7  WAKE
      8. 9.3.8  INH
      9. 9.3.9  Local Faults
      10. 9.3.10 TXD Dominant Time-Out (DTO)
      11. 9.3.11 Bus Stuck Dominant System Fault: False Wake-Up Lockout
      12. 9.3.12 Thermal Shutdown
      13. 9.3.13 Under Voltage on VSUP
      14. 9.3.14 Unpowered Device
    4. 9.4 Device Functional Modes
      1. 9.4.1 Normal Mode
      2. 9.4.2 Sleep Mode
      3. 9.4.3 Standby Mode
      4. 9.4.4 Wake-Up Events
        1. 9.4.4.1 Local Wake-Up (LWU) via WAKE Input Terminal
        2. 9.4.4.2 Wake-Up Request (RXD)
  10. 10Application Information Disclaimer
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedures
        1. 10.2.2.1 Normal Mode Application Note
        2. 10.2.2.2 TXD Dominant State Time-Out Application Note
        3. 10.2.2.3 Standby Mode Application Note
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
    2. 13.2 接收文档更新通知
    3. 13.3 支持资源
    4. 13.4 Trademarks
    5. 13.5 Electrostatic Discharge Caution
    6. 13.6 术语表
  14. 14Mechanical, Packaging, and Orderable Information

封装选项

机械数据 (封装 | 引脚)
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订购信息

Layout Guidelines

  • Pin 1(RXD): The RXD pin is an open-drain output and requires and external pull-up resistor in the range of 1-kΩ and 10-kΩ to function properly. If the controller paired with the transceiver does not have an integrated pull-up, an external resistor should be placed between RXD and the supply voltage for the controller.
  • Pin 2 (EN): EN is an input pin that is used to place the device in low-power sleep mode. If this feature is not used, the pin should be connected to the supply voltage for the controller through a series resistor using a pull-up value between 1-kΩ and 10-kΩ. Additionally, a series resistor may be placed on the pin to limit current on the digital lines in the case of an over voltage fault.
  • Pin 3 (WAKE): SW1 is oriented in a low-side configuration which is used to implement a local WAKE event. The series resistor R5 is needed for protection against over current conditions as it limits the current into the WAKE pin when the ECU has lost its ground connection. The pull-up resistor R4 is required to provide sufficient current during stimulation of a WAKE event. In this layout example R4 is set to 3-kΩ and R5 is set to 33-kΩ.
  • Pin 4 (TXD): The TXD pin is the transmit input signal to the device from the controller. 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 help filter noise.
  • Pin 5 (GND): This is the ground connection for the device. This pin should be tied to the ground plane through a short trace with the use of two vias to limit total return inductance.
  • Pin 6 (LIN): The LIN pin connects to the TLIN2021A-Q1 to the LIN bus. For responder node applications a 220 pF capacitor to ground is implemented. For commander node applications an additional series resistor and blocking diode should be placed between the LIN pin and the VSUP pin, see Typical LIN Bus.
  • Pin 7 (VSUP): This is the supply pin for the device. A 100-nF capacitor should be placed close to the VSUP supply pin for local power supply decoupling.
  • Pin 8 (INH):The INH pin is used for system power-management. A 100-kΩ load can be added to the INH output to ensure a fast transition time from the driven high state to the low state and to also force the pin low when left floating.
Note:

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