Right. I thought it might be 5v tolerant on the RX pin but maybe not.. easy enough to just use a resistor and a diode to the 3.3v supply to level shift there, a

Right. I thought it might be 5v tolerant on the RX pin but maybe not.. easy enough to just use a resistor and a diode to the 3.3v supply to level shift there, and the 3.3v TX should be fine for a 5v logic input.