looking for a way to protect an I2C mux.  We have two RJ45 connectors, one
with serial, one with I2C.  If they plug them in wrong, then it could (and
probably did) blow the mux.  So is there a way to protect this? Next design
will fix it by not allowing 12V on one of the I2C pins but for now we can't
change the connectors/wiring scheme.


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