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

8.3.2.3 Fail-Safe Logic

Fail-safe logic circuitry allows voltages on the logic control pins to be applied before the supply pins, protecting the device from potential damage. The switch is specified to be in the OFF state, regardless of the state of the logic signals. The logic inputs are protected against positive faults of up to +44 V in the powered-off condition, but do not offer protection against the negative overvoltage condition.

Fail-safe logic also allows the TMUX7348F-EP to interface with a voltage greater than VDD during normal operation to add maximum flexibility in system design. For example, with a VDD of = 15 V, the logic control pins could be connected to +24 V for a logic high signal which allows different types of signals, such as analog feedback voltages, to be used when controlling the logic inputs. Regardless of the supply voltage, the logic inputs can be interfaced as high as 44 V.