> Hi,
>
> we have to isolate the I2C-Bus via optocouplers. Because the I2C-lines are
> bidirectional it's not as easy as I thought. Any ideas how to solve this
> problem ?
>
> Thanx in advance
>
> Thomas
> =8-)

Check out I2C FAQ. There is a shcematic for optoisolated I2C:
http://www.ping.be/~ping0751/i2cqa3.htm

--------------------------------------------------
Efore Oy
Tero Leppanen, R&D Engineer
P.O.Box 61
FIN-02211 Espoo
tel:    +358 9 478 46 306
fax:    +358 9 478 46 500
e-mail: tero.leppanen@efore.fi