Pic and the Xbee module

[Michael]

I have a ton of 16c72, older part and yes 5v. Got a couple of these xbees and like I say, using a separate 3.3v regulator for them. Ok, was hoping that I could do a straight shot (in some cases it's worked before) but I'll take your word for it. The plan is to have a xmt/rcv pair with a pic in each box -- so I'll use serin on one and serout on the other. I may try a direct connection first just for the heck of it -- you would think a swing of 0 to 3.3v would be good enough for a logic low, logic high for the serin, my pcb is cramped might have to use a transistor instead of a chip gate. Certainly a resistor on the pic serout would be needed. Thanks.

[Michael]

Do you know of a buffer that's on an 8pin dip that will work? Don't have room for the 14pin 74hct125. I thought cmos went to 3.3v -- wrong, 3.5v I see.

[Michael]

I'll just use 74hct125 -- made room for it -- do you know, does it invert? Will I have to run the signal through one or 2 stages? THANKS.

[Michael]

I like this ---

SN74LVC2T45 8pins non inverting and cheap

[BH_epuk]

Thanks that Charles, In my sleep deprived state i'd forgoten that not all PICs run stable at lower voltages.
In my case, the 16F688 does run fine @4Mhz 3.3V.