This part is a kind of semiconductor called ISL83072E.

Function of this product has (ISL83070E - ISL83078E) RS-485/RS-422 Transceivers.

Manufacturers : Intersil Corporation

Image and pinout :

Some of the text within the PDF file :

® ISL83070E, ISL83071E, ISL83072E, ISL83073E, ISL83075E, ISL83076E, ISL83077E, ISL83078E Data Sheet March 21, 2006 FN6115.3 ±15kV ESD Protected, 3.3V, Full Fail-safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers The Intersil ISL8307XE are BiCMOS 3.3V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. These devices have very low bus currents (+125µA/-100µA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 transceivers on the network without violating the RS-485 specification’s 32 unit load maximum, and without using repeaters. For example, in a remote utility meter reading system, individual meter readings are routed to a concentrator via an RS-485 network, so the high [ ... ]

ISL83072E PDF Datasheet Download