SLLSEV0E November   2017  – March 2021 TCAN1043-Q1 , TCAN1043G-Q1 , TCAN1043H-Q1 , TCAN1043HG-Q1

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Description (continued)
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 ESD Ratings IEC Specification
    4. 7.4 Recommended Operating Conditions
    5. 7.5 Thermal Information
    6. 7.6 Dissipation Ratings
    7. 7.7 Electrical Characteristics
    8. 7.8 Switching Characteristics
    9. 7.9 Typical Characteristics
  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 Internal and External Indicator Flags (nFAULT and RXD)
      2. 9.3.2 Power-Up Flag (PWRON)
      3. 9.3.3 Wake-Up Request Flag (WAKERQ)
      4. 9.3.4 Wake-Up Source Recognition Flag (WAKESR)
      5. 9.3.5 Undervoltage Fault Flags
        1. 9.3.5.1 Undervoltage on VCC Fault
        2. 9.3.5.2 Undervoltage on VIO Fault
        3. 9.3.5.3 Undervoltage on VSUP Fault
      6. 9.3.6 CAN Bus Failure Fault Flag
      7. 9.3.7 Local Faults
        1. 9.3.7.1 TXD Dominant Timeout (TXD DTO)
        2. 9.3.7.2 TXD Shorted to RXD Fault
        3. 9.3.7.3 CAN Bus Dominant Fault
        4. 9.3.7.4 Thermal Shutdown (TSD)
        5. 9.3.7.5 RXD Recessive Fault
        6. 9.3.7.6 Undervoltage Lockout (UVLO)
        7. 9.3.7.7 Unpowered Device
        8. 9.3.7.8 Floating Terminals
        9. 9.3.7.9 CAN Bus Short Circuit Current Limiting
    4. 9.4 Device Functional Modes
      1. 9.4.1 CAN Bus States
      2. 9.4.2 Normal Mode
      3. 9.4.3 Silent Mode
      4. 9.4.4 Standby Mode
      5. 9.4.5 Go-to-Sleep Mode
      6. 9.4.6 Sleep Mode with Remote Wake and Local Wake Up Requests
        1. 9.4.6.1 Remote Wake Request via Wake Up Pattern (WUP)
        2. 9.4.6.2 Local Wake Up (LWU) via WAKE Input Terminal
      7. 9.4.7 Driver and Receiver Function Tables
      8. 9.4.8 Digital Inputs and Outputs
      9. 9.4.9 INH (Inhibit) Output
  10. 10Application Information Disclaimer
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
        1. 10.2.1.1 Bus Loading, Length and Number of Nodes
      2. 10.2.2 Detailed Design Procedures
        1. 10.2.2.1 CAN Termination
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout
      1. 12.1.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Related Links
    2. 13.2 Receiving Notification of Documentation Updates
    3. 13.3 Community Resources
    4. 13.4 Trademarks
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|14
  • DMT|14
Thermal pad, mechanical data (Package|Pins)
Orderable Information

CAN Termination

The ISO11898-2 standard specifies the interconnect to be a single twisted pair cable (shielded or unshielded) with 120 Ω characteristic impedance (ZO). Resistors equal to the characteristic impedance of the line should be used to terminate both ends of the cable to prevent signal reflections. Unterminated drop-lines (stubs) connecting nodes to the bus should be kept as short as possible to minimize signal reflections. The termination may be in a node but is generally not recommended, especially if the node may be removed from the bus. Termination must be carefully placed so that it is not removed from the bus. System level CAN implementations such as CANopen allow for different termination and cabling concepts for example to add cable length.

GUID-2742A083-260D-4E2D-A0AC-9BF5D913AA48-low.gifFigure 10-3 Typical CAN Bus Application

Termination may be a single 120-Ω resistor at the ends of the bus, either on the cable or in a terminating node. If filtering and stabilization of the common mode voltage of the bus is desired then “split termination” may be used, see Figure 10-4. Split termination improves the electromagnetic emissions behavior of the network by eliminating fluctuations in the bus common mode voltage levels at the start and end of message transmissions.

GUID-1007E9B7-300E-42B9-8834-E382A0CBD957-low.gifFigure 10-4 CAN Bus Termination Concepts