On Line Instrument Systems <olis@MINDSPRING.COM> wrote:
>I'm trying to otically-isolate the I/O lines of my PIC, but one of them (the
>SDA line of the I2C bus) is bi-directional.  Can anybody out there give me a
>circuit example of how I might do that?

Shawn,

Take a look at Philips part 82B715.  While this part does not provide
*optical* isolation, it does buffer both I2C lines.

TRUE optical isolation will require an isolated supply to power the LED
on the receiver opto.

--
Bob Fehrenbach    Wauwatosa, WI     bfehrenb@execpc.com