SCDS461A November   2023  – January 2025 TMUX7348F-EP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  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  ±15V 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  Off-Leakage Current
    3. 7.3  On-Leakage Current
    4. 7.4  Input and Output Leakage Current Under Overvoltage Fault
    5. 7.5  Break-Before-Make Delay
    6. 7.6  Enable Delay Time
    7. 7.7  Transition Time
    8. 7.8  Fault Response Time
    9. 7.9  Fault Recovery Time
    10. 7.10 Fault Flag Response Time
    11. 7.11 Fault Flag Recovery Time
    12. 7.12 Charge Injection
    13. 7.13 Off Isolation
    14. 7.14 Crosstalk
    15. 7.15 Bandwidth
    16. 7.16 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 Adjacent Channel Operation During Fault
        6. 8.3.2.6 ESD Protection
        7. 8.3.2.7 Latch-Up Immunity
        8. 8.3.2.8 EMC Protection
      3. 8.3.3 Overvoltage Fault Flags
      4. 8.3.4 Bidirectional and Rail-to-Rail Operation
      5. 8.3.5 1.8 V Logic Compatible Inputs
      6. 8.3.6 Integrated Pull-Down Resistor on Logic Pins
    4. 8.4 Device Functional Modes
      1. 8.4.1 Normal Mode
      2. 8.4.2 Fault Mode
      3. 8.4.3 Truth Tables
  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. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information

8.3.3 Overvoltage Fault Flags

The voltages on the source input pins of the TMUX7348F-EP are continuously monitored, and the status of whether an overvoltage condition occurs is indicated by an active low general fault flag (FF). The voltage on the FF pin indicates if any of the source input pins are experiencing an overvoltage condition. If any source pin voltage exceeds the fault supply voltages by a VT, the FF output is pulled-down to below VOL.

The specific fault (SF) output pins, likewise, can be used to decode which inputs are experiencing an overvoltage condition. The SF pin is pulled-down to below VOL when an overvoltage condition is detected on a specific source input pin, depending on the state of the A0, A1, A2, and EN logic pins (Table 8-1 provides more information).

Both the FF pin and SF pin are open-drain output and external pull-up resistors of 1 kΩ are recommended. The pull-up voltage can be in the range of 1.8 V to 5.5 V, depending on the controller voltage the device interfaces with.