SCDS487A October   2025  – December 2025 TMUX4819 , TMUX4821

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Absolute Maximum Ratings
  7. 6 ESD Ratings
  8. 7 Thermal Information
  9. 8 Recommended Operating Conditions
  10. 9 Source or Drain Continuous Current
  11. 10Source or Drain RMS Current
  12. 11Electrical Characteristics 
  13. 12Switching Characteristics 
  14. 13Typical Characteristics
  15. 14Parameter Measurement Information
    1. 14.1  On-Resistance
    2. 14.2  On-Leakage Current
    3. 14.3  Off-Leakage Current
    4. 14.4  Power-Off Leakage Current
    5. 14.5  Propagation Delay
    6. 14.6  tON (VDD) and tOFF (VDD) Time
    7. 14.7  Transition Time
    8. 14.8  Break-Before-Make
    9. 14.9  THD + Noise
    10. 14.10 Power Supply Rejection Ratio (PSRR)
    11. 14.11 Charge Injection
    12. 14.12 Bandwidth
    13. 14.13 Off Isolation
    14. 14.14 Crosstalk
  16. 15Detailed Description
    1. 15.1 Functional Block Diagram
    2. 15.2 Device Functional Modes
    3. 15.3 Feature Description
      1. 15.3.1 Beyond the Supply
      2. 15.3.2 Bidirectional Operation
      3. 15.3.3 Power-Off Protection
      4. 15.3.4 1.2V and 1.8V Logic Compatible Inputs
      5. 15.3.5 Integrated Pull-Down Resistor on Logic Pins
      6. 15.3.6 Fail-Safe Logic
  17. 16Application and Implementation
    1. 16.1 Application Information
    2. 16.2 Typical Applications
      1. 16.2.1 Audio Amplifier Switching
        1. 16.2.1.1 Design Requirements
        2. 16.2.1.2 Detailed Design Procedure
        3. 16.2.1.3 Application Curves
      2. 16.2.2 Smart Drug Delivery Flow Meters
        1. 16.2.2.1 Design Requirements
        2. 16.2.2.2 Detailed Design Procedure
        3. 16.2.2.3 Application Curve
    3. 16.3 Power Supply Recommendations
    4. 16.4 Layout
      1. 16.4.1 Layout Guidelines
      2. 16.4.2 Layout Example
  18. 17Device and Documentation Support
    1. 17.1 Documentation Support
      1. 17.1.1 Related Documentation
    2. 17.2 Receiving Notification of Documentation Updates
    3. 17.3 Support Resources
    4. 17.4 Trademarks
    5. 17.5 Electrostatic Discharge Caution
    6. 17.6 Glossary
  19. 18Revision History
  20. 19Mechanical, Packaging, and Orderable Information

Package Options

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

16.1 Application Information

TMUX4821 and TMUX4819 are part of the beyond the supply switches and multiplexers family of devices. This means that this device can switch signals from -15V to 15V with a low voltage supply from 1.8V to 5.5V. Additionally, TMUX48xx features powered-off protection, which by design keeps the switches open even when there is no supply. This unique feature combination enables the TMUX48xx to be extremely versatile for a wide variety of applications such as boosted outputs and high common mode offsets.