On the Spartan-3 with Vcco at 3.3V in LVTTL mode if I want to protect the outputs from possible miswiring to GND or +3.3V or Output-2- Output. Is there any common practice way to accomplish this?
I'm considering a 2.2k series resistor array "chip". But maybe there's a more appropiate way? Also what's the reaction of loading the output with say a 300 ohm resistor and specifying 16 mA drive?