SLLA637 May   2024 THVD4431

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Key Feature Highlights of THVD4431 Over XR34350 and SP339E/B
    1. 2.1 Regulated Output Voltage for RS-232
    2. 2.2 Full Path Diagnostic Loopback
    3. 2.3 Operating Ambient Temperature Range
    4. 2.4 Integrated Switchable Termination Resistor on Both Driver (R1/R2) and Receiver (R3/R4) Bus Pins
    5. 2.5 1.65V to 5.5V Supply for Logic Data and Control Signals
  6. 3Potential Design Changes
    1. 3.1 Pin 9 (VIO)
    2. 3.2 Pin 13 (MODE2)
    3. 3.3 Pin 17 (TERM_TX) and Pin 18 (TERM_RX)
    4. 3.4 Pin 19 (SHDN)
    5. 3.5 Pin 36 (NC)
  7. 4Pinout Mapping
  8. 5Summary
  9. 6References

3.2 Pin 13 (MODE2)

Pin 13 is NC (No Connect) for the Maxlinear XR34350 and SP339E/B multiprotocol transceiver. For TI’s THVD4431, this pin enables/disables the RS485 diagnostic loopback feature (for details, please refer to THVD4431 data sheet Section 7.4). Pull this pin to VIO if RS-485 loopback feature is needed in combination with MODE0, MODE1 also pulled high. Leave this pin as NC if same design as Maxlinear is needed.