In a message dated 97-11-11 07:21:41 EST, you write:

<<
 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-) >>
Thomas,
What about transformer Isolation?
Dave Duley