A design I was working on was going to use the MAX3140 SPI RS-485 chip. This is an integrated UART and set of drivers. The plan has changed and the RS-485 portion moved to a daughter card. Since all cards will be connected via I2C, I was looking for a similar chip similar to the 3140, but with an I2C interface. Can't find any, but perhaps someone knows of one.
The alternative (and actually a better one in some ways) is to use a processor with I2C port and a UART port, and drivers. Problem with this idea is more software needs to be done (no time) and more board space (not much of that either).
Help appreciated.
Dave,