Renesas Electronics ISL3177EIUZ Line Transceiver, 3-State

The Renesas Electronics ISL317xE are ±15kV IEC61000 ESD protected, 3.3V powered single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. This allows up to 256 transceivers on the network without violating the RS-485 specification’s 32 unit load maximum, and without using repeaters.

True 1/8 unit load allows up to 256 devices on the bus
Single 3.3V supply
High data rates up to 20Mbps