On Sat, Sep 08, 2001 at 10:57:21AM +0100, Andy Shaw wrote:
> Hi Folks,
> I'm sure this must have been covered before but a search of piclist.com
> failed to find anything... Anyway what would you recommend as the
> simplest/minimal hardware RS232 interface for use between a PIC and a modern
> PC? This is *not* for a production product I would just like to be able to
> include a very cheap interface on a home project for occasional
> diagnostic/config use. Can I get away without using a MAX* converter? What
> are the pros/cons? What would be your suggested circuit?

The pros of the MAX232 is simple: It works with the EIA-232 standard voltages,
it only requires 5V power, and it's easy to hook up.

It's really not worth discussing with discretes because if you're using the
standard UART you'll have to invert the signals anyway...

BAJ

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