Q
There is no specification in the datasheet for RXD / CD – what current canthese outputs drive? We want to isolate these signals and now we must select
optocouplers according to the current capability of these outputs (not
interested in using iCoupler).
A
Depending on what supply value you are using: If you are using 3.3V, CD cantypically drive a load current of up to 3.4mA. With a supply voltage of 2V, CD
can drive a load current of up to 1.4mA. The other digital outputs should have
similar performance.