SLLSF20B July   2019  – October 2021 THVD2410 , THVD2450

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 [IEC]
    4. 6.4  Recommended Operating Conditions
    5. 6.5  Thermal Information
    6. 6.6  Power Dissipation
    7. 6.7  Electrical Characteristics
    8. 6.8  Switching Characteristics: THVD2410
    9. 6.9  Switching Characteristics: THVD2450
    10. 6.10 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 ±70-V Fault Protection
      2. 8.3.2 Integrated IEC ESD and EFT Protection
      3. 8.3.3 Driver Overvoltage and Overcurrent Protection
      4. 8.3.4 Enhanced Receiver Noise Immunity
      5. 8.3.5 Receiver Fail-Safe Operation
      6. 8.3.6 Low-Power Shutdown Mode
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Data Rate and Bus Length
        2. 9.2.1.2 Stub Length
        3. 9.2.1.3 Bus Loading
        4. 9.2.1.4 Transient Protection
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary

Package Options

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

9.2.2 Detailed Design Procedure

Figure 9-6 suggests a protection circuit against 1 kV surge (IEC 61000-4-5) transients. Table 9-1 shows the associated bill of materials. SMAJ30CA TVS diodes are rated to operate up to 30 V. This ensures the protection diodes do not conduct if a direct RS-485 bus shorts to 24-V DC industrial power rail.

GUID-AA0CD115-C43C-4677-B778-ABCB0905309E-low.gifFigure 9-6 Transient Protection Against Surge Transients for Half-Duplex Devices
Table 9-1 Components List(1)
DEVICEFUNCTIONORDER NUMBERMANUFACTURER
XCVRRS-485 transceiverTHVD24x0TI
TVSBidirectional 400-W transient suppressorSMAJ30CALittelfuse