SLLS632C December   2005  – February 2015 SN65HVD1050

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (Continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Driver Electrical Characteristics
    6. 7.6  Receiver Electrical Characteristics
    7. 7.7  Device Switching Characteristics
    8. 7.8  Driver Switching Characteristics
    9. 7.9  Receiver Switching Characteristics
    10. 7.10 Supply Current
    11. 7.11 S-Pin Characteristics
    12. 7.12 VREF-Pin Characteristics
    13. 7.13 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Mode Control
        1. 9.3.1.1 Normal Mode
        2. 9.3.1.2 Silent Mode
      2. 9.3.2 TXD Dominant Timeout (DTO)
      3. 9.3.3 Thermal Shutdown
      4. 9.3.4 VREF
      5. 9.3.5 Operating Temperature Range
    4. 9.4 Device Functional Modes
  10. 10Application and Implementation
    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. 10.2.1.2 CAN Termination
          1. 10.2.1.2.1 Loop Propagation Delay
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 ESD Protection
        2. 10.2.2.2 Transient Voltage Suppresser (TVS) Diodes
      3. 10.2.3 Application Curve
    3. 10.3 System Example
      1. 10.3.1 ISO 11898 Compliance of SN65HVD1050 5-V CAN Transceiver
        1. 10.3.1.1 Introduction
        2. 10.3.1.2 Differential Signal
        3. 10.3.1.3 Common-Mode Signal
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Trademarks
    2. 13.2 Electrostatic Discharge Caution
    3. 13.3 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

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5 Description (Continued)

Pin 8 provides for two different modes of operation: high-speed or silent mode. The high-speed mode of operation is selected by connecting S (pin 8) to ground.

If a high logic level is applied to the S pin of the SN65HVD1050, the device enters a listen-only silent mode during which the driver is switched off while the receiver remains fully functional.

In silent mode, all bus activity is passed by the receiver output to the local protocol controller. When data transmission is required, the local protocol controller reverses this low-current silent mode by placing a logic-low on the S pin to resume full operation.

A dominant time-out circuit in the SN65HVD1050 prevents the driver from blocking network communication with a hardware or software failure. The time-out circuit is triggered by a falling edge on TXD (pin 1). If no rising edge is seen before the time-out constant of the circuit expires, the driver is disabled. The circuit is then reset by the next rising edge on TXD.

Vref (pin 5) is available as a VCC/2 voltage reference to stabilize the output common mode voltage point.

The SN65HVD1050 is characterized for operation from –40°C to 125°C.