SCDS400B march   2022  – july 2023 TMUX7348F , TMUX7349F

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 7 Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Thermal Information
    4. 7.4  Recommended Operating Conditions
    5. 7.5  Electrical Characteristics (Global)
    6. 7.6  ±15 V Dual Supply: Electrical Characteristics
    7. 7.7  ±20 V Dual Supply: Electrical Characteristics
    8. 7.8  12 V Single Supply: Electrical Characteristics
    9. 7.9  36 V Single Supply: Electrical Characteristics
    10. 7.10 Typical Characteristics
  9. 8 Parameter Measurement Information
    1. 8.1  On-Resistance
    2. 8.2  Off-Leakage Current
    3. 8.3  On-Leakage Current
    4. 8.4  Input and Output Leakage Current Under Overvoltage Fault
    5. 8.5  Break-Before-Make Delay
    6. 8.6  Enable Delay Time
    7. 8.7  Transition Time
    8. 8.8  Fault Response Time
    9. 8.9  Fault Recovery Time
    10. 8.10 Fault Flag Response Time
    11. 8.11 Fault Flag Recovery Time
    12. 8.12 Charge Injection
    13. 8.13 Off Isolation
    14. 8.14 Crosstalk
    15. 8.15 Bandwidth
    16. 8.16 THD + Noise
  10. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Flat ON- Resistance
      2. 9.3.2 Protection Features
        1. 9.3.2.1 Input Voltage Tolerance
        2. 9.3.2.2 Powered-Off Protection
        3. 9.3.2.3 Fail-Safe Logic
        4. 9.3.2.4 Overvoltage Protection and Detection
        5. 9.3.2.5 Adjacent Channel Operation During Fault
        6. 9.3.2.6 ESD Protection
        7. 9.3.2.7 Latch-Up Immunity
        8. 9.3.2.8 EMC Protection
      3. 9.3.3 Overvoltage Fault Flags
      4. 9.3.4 Bidirectional and Rail-to-Rail Operation
      5. 9.3.5 1.8 V Logic Compatible Inputs
      6. 9.3.6 Integrated Pull-Down Resistor on Logic Pins
    4. 9.4 Device Functional Modes
      1. 9.4.1 Normal Mode
      2. 9.4.2 Fault Mode
      3. 9.4.3 Truth Tables
  11. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
      3. 10.2.3 Application Curves
    3. 10.3 Power Supply Recommendations
    4. 10.4 Layout
      1. 10.4.1 Layout Guidelines
      2. 10.4.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

10.3 Power Supply Recommendations

The TMUX7348F and TMUX7349F operate across a wide supply range of ±5 V to ±22 V (8 V to 44 V in single-supply mode). They also perform well with asymmetrical supplies such as VDD = 12 V and VSS= –5 V. For improved supply noise immunity, use a supply decoupling capacitor ranging from 0.1 µF to 10 µF at both the VDD and VSS pins to ground. Always ensure the ground (GND) connection is established before supplies are ramped.

The fault supplies (VFP and VFN) provide the current required to operate the fault protection, and thus, must be low impedance supplies. They can be derived from the primary supplies by using a resistor divider and buffer or be an independent supply rail. The fault supplies must not exceed the primary supplies as it might cause unexpected behavior of the switch. Use a supply decoupling capacitor ranging from 0.1 µF to 10 µF at both the VFP and VFN pins to ground for improved supply noise immunity.

The positive supply (VDD) must be ramped before the positive fault rail (VFP) for proper power sequencing of the TMUX7348F and TMUX7349F. Similarly, the negative supply (VSS) must be ramped before the negative fault voltage rail (VFN).