SLOA101B August   2002  – May 2016 SN55HVD233-SEP , SN65HVDA1040A-Q1 , SN65HVDA1050A-Q1 , SN65HVDA540-5-Q1 , SN65HVDA540-Q1 , SN65HVDA541-5-Q1 , SN65HVDA541-Q1 , SN65HVDA542-5-Q1 , SN65HVDA542-Q1

 

  1.   Introduction to the Controller Area Network (CAN)
    1.     Trademarks
    2. 1 Introduction
    3. 2 The CAN Standard
    4. 3 Standard CAN or Extended CAN
      1. 3.1 The Bit Fields of Standard CAN and Extended CAN
        1. 3.1.1 Standard CAN
        2. 3.1.2 Extended CAN
    5. 4 A CAN Message
      1. 4.1 Arbitration
      2. 4.2 Message Types
        1. 4.2.1 The Data Frame
        2. 4.2.2 The Remote Frame
        3. 4.2.3 The Error Frame
        4. 4.2.4 The Overload Frame
      3. 4.3 A Valid Frame
      4. 4.4 Error Checking and Fault Confinement
    6. 5 The CAN Bus
      1. 5.1 CAN Transceiver Features
        1. 5.1.1  3.3-V Supply Voltage
        2. 5.1.2  ESD Protection
        3. 5.1.3  Common-Mode Voltage Operating Range
        4. 5.1.4  Common-Mode Noise Rejection
        5. 5.1.5  Controlled Driver Output Transition Times
        6. 5.1.6  Low-Current Bus Monitor, Standby and Sleep Modes
        7. 5.1.7  Bus Pin Short-Circuit Protection
        8. 5.1.8  Thermal Shutdown Protection
        9. 5.1.9  Bus Input Impedance
        10. 5.1.10 Glitch-Free Power Up and Power Down
        11. 5.1.11 Unpowered Node Protection
        12. 5.1.12 Reference Voltage
        13. 5.1.13 V-Split
        14. 5.1.14 Loopback
        15. 5.1.15 Autobaud Loopback
      2. 5.2 CAN Transceiver Selection Guide
    7. 6 Conclusion
    8. 7 Additional Reading
  2.   Revision History

5.1.7 Bus Pin Short-Circuit Protection

The ISO 11898 Standard recommends that a transceiver survive bus wire short-circuits to each other, to the power supply, and to ground. This ensures that transceivers are not damaged by bus cable polarity reversals, cable crush, and accidental shorts to high power supplies. The short-circuit protection in TI devices protects for an unlimited time. Once a problem is removed, the devices perform as designed whereas the CAN transceivers offered from competing vendors are permanently damaged and require replacement.