Any idea how much current the CP2102 chip’s digital lines can safely sink? The datasheet doesn’t seem to say, or at least I didn’t find where it does.
I would like to use the RTS pin on a USB-to-serial adapter to simultaneously reset two SMC03s. Since they’ll be running continuously (well, for about one minute every half hour, but I do mean every half hour) I want to reset them before sending new commands just in case. The problem is that even in the high state the RTS pin is only at 3.3V. If I connect the pins directly, most of the time it would be sinking 3.4 mA, and 10 mA briefly during reset. I suppose I could halve that if I connect one SMC03 to RTS and one to DTR.
If I can’t find real specs though I think I’ll just build in a double transistor inverter.