Do you have a compelling reason not to just use a PIC at 3.3V?

It seems that most everything can be had in a 3.3V variety, if
you look a bit.  Is there another chip that you're using that
must work at 5V?

Mike H.

>Hi
>
>I'm trying to connect a 3.3v GPS device to a 5v PIC, now I need to
>adapt the signals.  I've looked back in the archives, and Brent Brown
>suggested the bellow, but I have a few questions.
>
>Should I add a 3.3v Zener too the RxD line to make sure it can't go
>above 3.3v ever?
>
>Also is there not a simpler way of configuring the TxD line?  Are there
>chips for handling this sort of conversion?
>
>Thanks
>
>Ed
>
>
>
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