SLIS117C August   2007  – May 2022 TPIC1021A-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Device Comparison Table
  7. 7 Pin Configuration and Functions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Recommended Operating Conditions
    4. 8.4 Thermal Information
    5. 8.5 Electrical Characteristics
    6. 8.6 Typical Characteristics
  9. 9 Parameter Measurement Information
    1. 9.1 Test Circuit
  10. 10Detailed Description
    1. 10.1 Overview
    2. 10.2 Functional Block Diagram
    3. 10.3 Feature Description
      1. 10.3.1 Local Interconnect Network (LIN) Bus
        1. 10.3.1.1 Transmitter Characteristics
        2. 10.3.1.2 Receiver Characteristics
      2. 10.3.2 Transmit Input (TXD)
        1. 10.3.2.1 TXD Dominant State Time-Out
      3. 10.3.3 Receive Output (RXD)
        1. 10.3.3.1 RXD Wake-up Request
      4. 10.3.4 Supply Voltage (VSUP)
      5. 10.3.5 Ground (GND)
      6. 10.3.6 Enable Input (EN)
      7. 10.3.7 NWake Input (NWake)
      8. 10.3.8 Inhibit Output (INH)
    4. 10.4 Device Functional Modes
      1. 10.4.1 Operating States
        1. 10.4.1.1 Normal Mode
        2. 10.4.1.2 Sleep Mode
          1. 10.4.1.2.1 Wake-Up Events
        3. 10.4.1.3 Standby Mode
  11. 11Application and Implementation
    1. 11.1 Application Information
    2. 11.2 Typical Application
      1. 11.2.1 Design Requirements
      2. 11.2.2 Detailed Design Procedure
      3. 11.2.3 Application Curves
    3. 11.3 Power Supply Recommendations
    4. 11.4 Layout
      1. 11.4.1 Layout Guidelines
      2. 11.4.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Receiving Notification of Documentation Updates
    2. 12.2 Support Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

11.2.2 Detailed Design Procedure

The RXD output structure is an open-drain output stage. This allows the TPIC1021A to be used with 3.3-V and
5-V I/O microcontrollers. If the RXD pin of the microcontroller does not have an integrated pullup, an external pullup resistor to the microcontroller I/O supply voltage is required.

The VSUP pin of the device must be decoupled with a 100-nF capacitor as close to the supply pin of the device as possible.

The NWAKE pin is a high voltage wake-up input to the device. If this pin is not being used it must be tied to VSUP.