SLVSLR3A August   2026  – October 2026 TMUX5508 , TMUX5509

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  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics (±15V Dual Supply)
    6. 6.6  Switching Characteristics (±15V Dual Supply)
    7. 6.7  Electrical Characteristics (±20V Dual Supply)
    8. 6.8  Switching Characteristics (±20V Dual Supply)
    9. 6.9  Electrical Characteristics (12V Single Supply)
    10. 6.10 Switching Characteristics (12V Single Supply)
    11. 6.11 Electrical Characteristics (40V Single Supply)
    12. 6.12 Switching Characteristics (40V Single Supply)
    13. 6.13 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 Delay
    6. 7.6  Turn-On and Turn-Off Time
    7. 7.7  Charge Injection
    8. 7.8  Off Isolation
    9. 7.9  Channel-to-Channel Crosstalk
    10. 7.10 Bandwidth
    11. 7.11 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 Bidirectional Operation
      2. 8.3.2 Rail-to-Rail Operation
      3. 8.3.3 1.8V Logic Compatible Inputs
      4. 8.3.4 Flat On-Resistance
      5. 8.3.5 Power-Up Sequence Free
    4. 8.4 Device Functional Modes
    5. 8.5 Truth Tables
  10. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application - Gain Switching
      1. 9.2.1 Design Requirements
      2. 9.2.2 Application Curve
    3. 9.3 Layout
      1. 9.3.1 Layout Guidelines
      2. 9.3.2 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

8.3.4 Flat On-Resistance

The TMUX550x is designed with a special switch architecture to produce ultra-flat on-resistance (RON) across most of the switch input operating region. The flat RON response allows the device to be used in a wide variety of applications since the RON is controlled regardless of the signals sampled. The architecture is implemented without a charge pump so unwanted noise is not produced from the device to affect sampling accuracy.

This architecture also keeps RON the same regardless of the supply voltage. The flattest on-resistance region extends roughly from 5V above VSS to 5V below VDD. As long as this headroom is maintained, the TMUX550x exhibits an extremely linear response.