RS485 chipset, similar to MAX485 - this converts TTL level signals to/from RS485 signals for noise-free transmission/reception for much longer distances than TTL signals could get.
The communication distance when using twisted pair cable is up to approx. 1200 metres, with a comms rate of up to 20Mbps.
Can be used in high-noise/interference environments.
RS485 also supports multiple units on the same bus.
Power supply voltage should be DC 5V.
Two pin terminals.
5.08mm pitch.