SCDS477A June   2024  – June 2025 TMUX1308A , TMUX1309A

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: TMUX1308A
    4. 6.4  Thermal Information: TMUX1309A
    5. 6.5  Recommended Operating Conditions
    6. 6.6  Electrical Characteristics
    7. 6.7  Logic and Dynamic Characteristics
    8. 6.8  Timing Characteristics
    9. 6.9  Injection Current Coupling
    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  Transition Time
    5. 7.5  Break-Before-Make
    6. 7.6  tON(EN) and tOFF(EN)
    7. 7.7  Charge Injection
    8. 7.8  Off Isolation
    9. 7.9  Crosstalk
    10. 7.10 Bandwidth
    11. 7.11 Injection Current Control
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Bidirectional Operation
      2. 8.3.2 Rail-to-Rail Operation
      3. 8.3.3 1.8V Logic Compatible Inputs
      4. 8.3.4 Fail-Safe Logic
      5. 8.3.5 High-Impedance Optimization
      6. 8.3.6 Injection Current Control
        1. 8.3.6.1 TMUX13xxA is Powered, Channel is Unselected, and the Input Signal is Greater Than VDD (VDD = 5V, VINPUT = 5.5V)
        2. 8.3.6.2 TMUX13xxA is Powered, Channel is Selected, and the Input Signal is Greater Than VDD (VDD = 5V, VINPUT = 5.5V)
        3. 8.3.6.3 TMUX13xxA is Unpowered and the Input Signal has a Voltage Present (VDD = 0V, VINPUT = 3V)
    4. 8.4 Device Functional Modes
    5. 8.5 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 Short To Battery Protection
      4. 9.2.4 Application Curve
    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

7.8 Off Isolation

Off isolation is defined as the ratio of the signal at the drain pin (D) of the device when a signal is applied to the source pin (Sx) of an off-channel. Figure 7-8 shows the setup used to measure, and the equation to compute off isolation.

TMUX1308A TMUX1309A Off Isolation Measurement SetupFigure 7-8 Off Isolation Measurement Setup
Equation 1. O f f   I s o l a t i o n   =   20   ×   L o g   V O U T V S