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should I add pull on pull down resistor for RS422

dimitry chen
Expert 1145 points
Other Parts Discussed in Thread: THVD1550

Dears

My new project use THVD1550  for RS422, should I add pull on pull down resistor for RS422.

If it need pull up pull down, should I add on TX , RX ?

or I only need to add pull up pull down on TX, thanks