There is a NM232DD from C&D Technologies , 2 transmitters, 2 receivers for 
RS232.Rather expensive ...
/jorgd

At 05:59 2006-02-22, you wrote:

>Just wondering if anyone has a favorite IC which can be
>inserted in between two RS-232 devices (say, a PC and
>a battery powered device using a level shifter) and provide
>optical isolation, or if I need to start laying out a board.
>
>Mike H.
>
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