SLVSM19 July   2026 TCAN942H-Q1

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 System-Level Transient and ESD Ratings
    4. 6.4 Recommended Operating Conditions
    5. 6.5 Thermal Characteristics
    6. 6.6 Supply Characteristics
    7. 6.7 Dissipation Ratings
    8. 6.8 Electrical Characteristics
    9. 6.9 Switching Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Detailed Pin Description
      1. 7.3.1 TXD
      2. 7.3.2 GND
      3. 7.3.3 VCC
      4. 7.3.4 RXD
      5. 7.3.5 VIO (only for TCAN942HV-Q1)
      6. 7.3.6 CANH and CANL
      7. 7.3.7 STB (Standby)
    4. 7.4 Feature Description
      1. 7.4.1 CAN Bus States
      2. 7.4.2 TXD Dominant Timeout (DTO)
      3. 7.4.3 CAN Bus Short-Circuit Tolerance
      4. 7.4.4 Thermal Shutdown (TSD)
      5. 7.4.5 Undervoltage Lockout
      6. 7.4.6 Unpowered Device
      7. 7.4.7 Floating Pins
    5. 7.5 Device Functional Modes
      1. 7.5.1 Operating Modes
      2. 7.5.2 Normal Mode
      3. 7.5.3 Standby Mode
        1. 7.5.3.1 Remote Wake Request Using Wake-Up Pattern (WUP) in Standby Mode
      4. 7.5.4 Driver and Receiver Function
  9. 8 Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

7.4.4 Thermal Shutdown (TSD)

If the junction temperature of the TCAN942H-Q1 exceeds the thermal shutdown threshold (TTSD), the device turns off the CAN driver circuitry and blocks the TXD-to-bus transmission path. The shutdown condition is cleared when the junction temperature of the device drops below TTSD. The CAN bus pins are biased to VCC/2 during a TSD fault and the receiver-to-RXD path remains operational. The TCAN942H-Q1 TSD circuit includes hysteresis, which prevents the CAN driver output from oscillating during a TSD fault.