The HGX3485ECMM/TR is an MSOP-8 RS-485/RS-422 integrated circuit (IC) manufactured by HGSEMI. It is designed to provide highly reliable full-duplex data communications between two or more devices on twisted pair wiring media. It utilizes a differential driver and receiver pair for data signaling and incorporates a selectable cable biasing circuitry. The HGX3485ECMM/TR is RoHS compliant, meaning that it meets the European Union's standards in regards to hazardous substances and is free of dangerous toxins and pollutants. The HGX3485ECMM/TR's features include: 4Mbps data rate, under-load data line biasing, and adjustable receiver sensitivity to reduce noise. It is suitable for applications such as portable, consumer, industrial, and automotive systems.