I would like to use I2C to communicate between Arduino controllers using the MAX485 to convert the signal to RS422.
I drew a circuit of how I think it would work. Does this look correct?
IC1 is a Texas Instruments SN74AHC125N, Buffers & Line Drivers Tri-State Quad Bus. HiZ = High Impedance.
The same circuit would be used for the SDA and SCL.
The cable will have 2 twisted pairs. This should extend the I2C range from 10 feet to 4900 feet.