The CS48505S is an integrated circuit with SOIC-8 packaging, manufactured by Chipanalog. It is suitable for RS-485/RS-422 communications. It is compliant with RoHS specifications and is designed for use in a wide range of communication systems. The device provides 8-bit high-speed data rates up to 12 Mbps. It features an integrated photo-coupled RS-485 transceiver, dual independent receive and transmit finite state machines, and a receive-data-valid function. With a minimum noise margin of 1V, and an improved data-skew performance of 2ns, the device is suitable for industrial and commercial applications. It also includes a unique information-on-the-fly data-validation feature that allows devices with different communication characteristics to communicate with each other.