The SN75LBC176D is an integrated circuit (IC) manufactured by Texas Instruments. It's an RS-485 interface IC designed for differential bus transceiver applications. It supports bi-directional data transmission at speeds up to 1Mb/s and supports half and full duplex communications. It can operate in an asynchronous and synchronous environment with common-mode input range from (VCC/2)-7V up to (VCC/2)+7V. The SN75LBC176D features very low power supply current, driver slew rate, low propagation delay time, high noise rejection and improved EMC performance. It is suitable for use in industrial control, building automation, power management, precision measurement, and automation process.