The FTDI and SiLabs chips are available in tiny QFN packages. I don't 
think there are any PICs with USB that small (or cheap).

For prototyping Pololu has a tiny PCB with the SiLabs chip.

<http://www.pololu.com/products/pololu/0391/>

There is also a USB cable with the FTDI chip in the USB 'A' connector!

<http://www.ftdichip.com/Products/EvaluationKits/TTL-232R.htm>


At 07:02 AM 12/7/2006, you wrote:
>I know the usb-232 are fairly cheap but I really need a much more
>compact design.  I googled and found lots of these but all seemed
>to use a FT usb converter chip. I was looking at the 18F's with
>USB 2 and pondering if it could be done with just a pic.

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