Hi,
I'm using RS-422 transceiver part number SN65C1168E-SEP. Should the PCB trace impedance be 100-ohm or 120-ohm differential?
https://www.ti.com/product/SN65C1168E-SEP
Thanks,
Briana
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Hi,
I'm using RS-422 transceiver part number SN65C1168E-SEP. Should the PCB trace impedance be 100-ohm or 120-ohm differential?
https://www.ti.com/product/SN65C1168E-SEP
Thanks,
Briana
Hi Briana,
RS-422 uses 100 Ohm termination - so the trace impedance should also be 100 Ohms to prevent reflections. Clemens is correct by saying the transceiver itself doesn't really care.
Best,
Parker Dodson