SCDS423A October   2020  – May 2024 TMUX1575

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
    1.     Pin Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Dynamic Characteristics
    7. 5.7 Timing Requirements
    8. 5.8 Typical Characteristics
  7. 6 Parameter Measurement Information
    1. 6.1  On-Resistance
    2. 6.2  Off-Leakage Current
    3. 6.3  On-Leakage Current
    4. 6.4  IPOFF Leakage Current
    5. 6.5  Transition Time
    6. 6.6  tON (EN) and tOFF (EN) Time
    7. 6.7  Break-Before-Make Delay
    8. 6.8  Charge Injection
    9. 6.9  Off Isolation
    10. 6.10 Channel-to-Channel Crosstalk
    11. 6.11 Bandwidth
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Bidirectional Operation
      2. 7.3.2 Beyond Supply Operation
      3. 7.3.3 1.2V Logic Compatible Inputs
      4. 7.3.4 Powered-off Protection
      5. 7.3.5 Fail-Safe Logic
      6. 7.3.6 Integrated Pull-Down Resistors
    4. 7.4 Device Functional Modes
      1. 7.4.1 Truth Tables
  9. 8 Application and Implementation
    1. 8.1 Typical Application
      1. 8.1.1 Design Requirements
      2. 8.1.2 Detailed Design Procedure
    2. 8.2 Power Supply Recommendations
    3. 8.3 Layout
      1. 8.3.1 Layout Guidelines
      2. 8.3.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information
    1. 11.1 Mechanical Data

8.1.2 Detailed Design Procedure

The TMUX1575 can be operated without any external components except for the supply decoupling capacitors. The TMUX1575 has internal weak pull-down resistors (6 MΩ) to GND so that it powers-on with the switches in a known state. All inputs signals passing through the switch must fall within the recommend operating conditions of the TMUX1575 including signal range and continuous current. For this design example, with a supply of 3.3V, the signals can range from 0V to 3.3V when the device is powered. This example can also utilize the Powered-off protection feature where the inputs can range from 0V to 3.6V when VDD = 0V. Due to the voltage range and high speed capability, the TMUX1575 example is suitable for use in SPI, JTAG, eMMC, and I2S applications. Refer to Enabling SPI-based flash memory expansion by using multiplexers for more information on using switches and multiplexers for SPI protocol expansion.