SLLSF09F December   2017  – August 2026 ISO1042

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Transient Immunity
    4. 5.4  Recommended Operating Conditions
    5. 5.5  Thermal Information
    6. 5.6  Power Ratings
    7. 5.7  Insulation Specifications
    8. 5.8  Safety-Related Certifications
    9. 5.9  Safety Limiting Values
    10. 5.10 Electrical Characteristics - DC Specification
    11. 5.11 Switching Characteristics
    12. 5.12 Insulation Characteristics Curves
    13. 5.13 Typical Characteristics
  7. 6 Parameter Measurement Information
    1. 6.1 Test Circuits
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 CAN Bus States
      2. 7.3.2 Digital Inputs and Outputs: TXD (Input) and RXD (Output)
      3. 7.3.3 Protection Features
        1. 7.3.3.1 TXD Dominant Timeout (DTO)
        2. 7.3.3.2 Thermal Shutdown (TSD)
        3. 7.3.3.3 Undervoltage Lockout and Default State
        4. 7.3.3.4 Floating Pins
        5. 7.3.3.5 Unpowered Device
        6. 7.3.3.6 CAN Bus Short Circuit Current Limiting
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Bus Loading, Length and Number of Nodes
        2. 8.2.2.2 CAN Termination
      3. 8.2.3 Application Curve
        1. 8.2.3.1 Insulation Lifetime
    3. 8.3 DeviceNet Application
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
        1. 8.5.1.1 PCB Material
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

7.3.2 Digital Inputs and Outputs: TXD (Input) and RXD (Output)

The VCC1 supply for the isolated digital input and output side of the device can be supplied by 1.8V, 2.5V, 3.3V, and 5V supplies and therefore the digital inputs and outputs are 1.8V, 2.5V, 3.3V, and 5V compatible.

Note:

The TXD pin is very weakly internally pulled up to VCC1. An external pullup resistor must be used to make sure that the TXD pin is biased to recessive (high) level to avoid issues on the bus if the microprocessor does not control the pin and the TXD pin floats. The TXD pullup strength and CAN bit timing require special consideration when the device is used with an open-drain TXD output on the CAN controller of the microprocessor. An adequate external pullup resistor must be used to make sure that the TXD output of the microprocessor maintains adequate bit timing input to the input on the transceiver.