I'm trying to run a remote I2C temp sensor over phone
cable 50m away into a PIC. It needs to be very reliable and cheap.

My first assumptions are: Run slow out of the PIC since I can
control the bit rate and therefore reduce effect of slew due to cable
capacitance.

Second, use a driver of some sort out at the I2C sensor to isolate
the I2C sensor chip from cable capacitance/impedance and protect from
induced transients.

Has anyone done this and know all the "gotcha's"?
Easiest way of implementing a driver/receiver circuit?
Transient protection? etc....


thanks,

Jason Wolfson

___________________________________________
 Lipidex Corp
  50 Franklin Terrace
    Duxbury MA 02332
          781-834-1600
              781-834-1601 FAX
                      jason@lipidex.com
____________________________________________

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