ZHCSNC9C february   2021  – july 2023 TMUX7308F , TMUX7309F

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  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 Charge Injection
    11. 8.11 Off Isolation
    12. 8.12 Crosstalk
    13. 8.13 Bandwidth
    14. 8.14 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 Bidirectional Operation
      4. 9.3.4 1.8 V Logic Compatible Inputs
      5. 9.3.5 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 接收文档更新通知
    3. 11.3 支持资源
    4. 11.4 Trademarks
    5. 11.5 静电放电警告
    6. 11.6 术语表
  13. 12Mechanical, Packaging, and Orderable Information

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10.2.2 Detailed Design Procedure

The image shows the case where an incorrect wiring condition occurred and one of the input connectors has been shorted to the power board supply voltage. If the board supply voltage is higher than the power supply of the multiplexer, then the TMUX7308F or TMUX7309F will disconnect the source input from passing the signal to protect the downstream ADC. The drain pin of the mux will be pulled up to the supply voltage VDD through a 40 kΩ resistor to allow the ADC to determine a fault condition has occurred.
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