SLIS113E October   2004  – May 2022 TPIC1021

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 LIN Bus Pin
        1. 8.3.1.1 Transmitter Characteristics
        2. 8.3.1.2 Receiver Characteristics
      2. 8.3.2 Transmit Input Pin (TXD)
        1. 8.3.2.1 TXD Dominant State Timeout
      3. 8.3.3 Receive Output Pin (RXD)
        1. 8.3.3.1 RXD Wake-up Request
      4. 8.3.4 Ground (GND)
      5. 8.3.5 Enable Input Pin (EN)
      6. 8.3.6 NWake Input Pin (NWake)
      7. 8.3.7 Inhibit Output Pin (INH)
    4. 8.4 Device Functional Modes
      1. 8.4.1 Operating States
        1. 8.4.1.1 Normal Mode
        2. 8.4.1.2 Low Power Mode
        3. 8.4.1.3 Wake-Up Events
        4. 8.4.1.4 Standby Mode
      2. 8.4.2 Supply Voltage (VSUP)
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|8
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.3.3 Receive Output Pin (RXD)

This pin is the interface to the LIN protocol controller or SCI/UART of the MCU, which reports the state of the LIN bus voltage. LIN recessive (near battery) is represented by a high level on RXD and LIN dominant (near ground) is represented by a low level on RXD. The RXD output structure is an open-drain output stage. This allows the TPIC1021 to be used with 3.3 V and 5 V I/O microcontrollers. If the microcontroller’s RXD pin does not have an integrated pull-up, an external pull-up resistor to the microcontroller I/O supply voltage is required.