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SN65MLVD200A: Differential line driver inquiry

Marco Rojas
Intellectual 2910 points

Part Number: SN65MLVD200A

Hi team,

I have a customer with the below question. Let me know what you think and thanks in advance!

"Can you please confirm whether this part expects external termination and DC biasing on the differential pair?"

Marco

  • 0
    TI__Genius 12606 points

    Hi Marco,

    Yes you will need external termination for this device. You will need two 100Ohm resistors on each end of the bus (see below):

    For DC biasing, you don't need to do anything extra to make the device operate normally if you are not AC-coupling. However, if you want to put the device in a failsafe state if it becomes disconnected and the A and B pin become floating, I would recommend using the Type 2 version of this device: SN65MLVD204AD. The transition region of a Type 2 device is shifted up, so when you have an open circuit and VID become 0V, the device will be in a defined LOW logic state. Otherwise, you would to add failsafe pullup and pulldown resistors to accomplish this. 

    Regards,

    Matt