SLLSET0D March   2016  – April 2021 TCAN1051-Q1 , TCAN1051G-Q1 , TCAN1051GV-Q1 , TCAN1051H-Q1 , TCAN1051HG-Q1 , TCAN1051HGV-Q1 , TCAN1051HV-Q1 , TCAN1051V-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 ESD Ratings, Specifications
    4. 6.4 Recommended Operating Conditions
    5. 6.5 Thermal Information
    6. 6.6 Power Rating
    7. 6.7 Electrical Characteristics
    8. 6.8 Switching Characteristics
    9. 6.9 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 TXD Dominant Timeout (DTO)
      2. 8.3.2 Thermal Shutdown (TSD)
      3. 8.3.3 Undervoltage Lockout
      4. 8.3.4 Unpowered Device
      5. 8.3.5 Floating Terminals
      6. 8.3.6 CAN Bus Short Circuit Current Limiting
      7. 8.3.7 Digital Inputs and Outputs
        1. 8.3.7.1 5-V VCC Only Devices (Devices without the "V" Suffix):
        2. 8.3.7.2 5 V VCC with VIO I/O Level Shifting (Devices with the "V" Suffix):
    4. 8.4 Device Functional Modes
      1. 8.4.1 CAN Bus States
      2. 8.4.2 Normal Mode
      3. 8.4.3 Silent Mode
      4. 8.4.4 Driver and Receiver Function Tables
  9. 9 Application Information Disclaimer
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Bus Loading, Length and Number of Nodes
      2. 9.2.2 Detailed Design Procedures
        1. 9.2.2.1 CAN Termination
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

9.2.2.1 CAN Termination

The ISO 11898 standard specifies the interconnect to be a 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 on the cable or in a node, but if nodes may be removed from the bus, the termination must be carefully placed so that two terminations always exist on the network.

Termination may be a single 120-Ω resistor at the end 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 9-2). Split termination improves the electromagnetic emissions behavior of the network by eliminating fluctuations in the bus common-mode voltages at the start and end of message transmissions.

GUID-1007E9B7-300E-42B9-8834-E382A0CBD957-low.gifFigure 9-2 CAN Bus Termination Concepts

The TCAN1051 family of transceivers have variants for both 5-V only applications and applications where level shifting is needed for a 3.3-V micrcontroller.

GUID-7DD0F018-AF49-4635-B523-0194AA131DF9-low.pngFigure 9-3 Typical CAN Bus Application Using 5 V CAN Controller
GUID-FED4B6A1-B3A0-4C32-A816-F0EF1C1F3181-low.pngFigure 9-4 Typical CAN Bus Application Using 3.3 V CAN Controller