SCDS394B march   2021  – june 2023 TMUX7462F

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Thermal Information
    4. 6.4  Recommended Operating Conditions
    5. 6.5  Electrical Characteristics (Global)
    6. 6.6  ±15 V Dual Supply: Electrical Characteristics
    7. 6.7  ±20 V Dual Supply: Electrical Characteristics
    8. 6.8  12 V Single Supply: Electrical Characteristics
    9. 6.9  36 V Single Supply: Electrical Characteristics
    10. 6.10 Typical Characteristics
  8. 7 Parameter Measurement Information
    1. 7.1  On-Resistance
    2. 7.2  On-Leakage Current
    3. 7.3  Input and Output Leakage Current under Overvoltage Fault
    4. 7.4  Fault Response Time
    5. 7.5  Fault Recovery Time
    6. 7.6  Fault Flag Response Time
    7. 7.7  Fault Flag Recovery Time
    8. 7.8  Fault Drain Enable Time
    9. 7.9  Inter-Channel Crosstalk
    10. 7.10 Bandwidth
    11. 7.11 THD + Noise
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Flat ON-Resistance
      2. 8.3.2 Protection Features
        1. 8.3.2.1 Input Voltage Tolerance
        2. 8.3.2.2 Powered-Off Protection
        3. 8.3.2.3 Fail-Safe Logic
        4. 8.3.2.4 Overvoltage Protection and Detection
        5. 8.3.2.5 Latch-Up Immunity
        6. 8.3.2.6 EMC Protection
      3. 8.3.3 Overvoltage Fault Flags
      4. 8.3.4 Bidirectional Operation
    4. 8.4 Device Functional Modes
      1. 8.4.1 Normal Mode
      2. 8.4.2 Fault Mode
      3. 8.4.3 Truth Table
  10. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

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

8.3.2.6 EMC Protection

The TMUX7462F is not intended for standalone electromagnetic compatibility (EMC) protection in industrial applications. There are three common high voltage transient specifications that govern industrial high voltage transient specifications: IEC61000-4-2 (ESD), IEC61000-4-4 (EFT), and IEC61000-4-5 (surge immunity). A transient voltage suppressor (TVS), along with some low-value series current limiting resistor, are required to prevent source input voltages from going above the rated ±60 V limits.

It is critical to ensure that the maximum working voltage is greater than the normal operating range of the input source pins protected and any known system common-mode overvoltage that may be present due to incorrect wiring, loss of power, or short circuit when selecting a TVS protection device. Figure 8-2 shows an example of the proper design window when selecting a TVS device.

Region 1 denotes the normal operation region of TMUX7462F, where the input source voltages stay below the fault supplies VFP and VFN. Region 2 represents the range of possible persistent DC (or long duration AC overvoltage fault) presented on the source input pins. Region 3 represents the margin between any known DC overvoltage level and the absolute maximum rating of the TMUX7462F. The TVS breakdown voltage must be selected to be less than the absolute maximum rating of the TMUX7462F, but greater than any known possible persistent DC or long duration AC overvoltage fault to avoid triggering the TVS inadvertently. Region 4 represents the margin the system designers must impose when selecting the TVS protection device to prevent accidental triggering the ESD cells of the TMUX7462F.

GUID-355C3EF2-C387-4A3F-9ACD-DCF97A5BAA47-low.gif Figure 8-2 System Operation Regions and Proper Region of Selecting a TVS Protection Device