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SN65LVDS31: LVDS/RS422 replaceable parts

Part Number: SN65LVDS31
Other Parts Discussed in Thread: AM26LV31E

Tool/software:

Hello,

I'm looking for a (lvcmos to) LVDS buffer that can also operate as a RS422 buffer with certain configuration change.

Two different devices that are pin to pin replaceable (one device LVDS, another RS422) is also a solution.

I need this solution for a Transmitter and for a Receiver.

I know that replaceable parts do exist because I used them a few years ago, but they are old and and i remember a big package.. (preferred is QFN/BGA etc..)

I asked CHAT GPT this question and got the following suggestion.. do you have any other? Thanks!!

Certainly! If you're looking for a transmitter instead of a receiver, you can consider the Texas Instruments SN65LVDS31. This is an example of a LVDS transmitter that can be configured for RS422 operation.

Here are some key features of the SN65LVDS31:

  1. Voltage compatibility: Supports LVCMOS input levels and LVDS outputs. It can also be configured for RS422 outputs.
  2. Data rates: Capable of supporting high-speed data rates.
  3. Differential signaling: Provides differential signaling for noise immunity and signal integrity.
  4. Configurability: Can be configured for RS422 operation, making it suitable for your requirements.
  5. Wide supply voltage range: Supports a wide range of supply voltages.
  • The SN65LVDS31 and AM26LV31E have compatible pinouts. Same for the '32 receivers; there you also need different termination resistors.

    (ChatGPT, as usual, is hallucinating. You should have asked it what signal to apply to what pin to switch to RS-422 mode.)

  • Hi Max,

    Chat GPT recommended a LVDS driver option. You mentioned that you are looking for a buffer, and then you also mention that you are looking for a transmitter and receiver. Or, are you looking for a transceiver? 

    You can filter through our LVDS transceivers here: LVDS, M-LVDS & PECL ICs product selection | TI.com

    I have put in transceiver search criteria, but you can modify this with more specific metrics based on your application.

    You can also search for a pin-to-pin compatible pinout RS422 device here: RS-485 & RS-422 transceivers product selection | TI.com

    I can do a more in-depth search for you if you provide further details of what the requirements you are looking for.

    Regards, Amy