The CTM8251KD with Communication Modules Through Hole RoHS manufactured by Taisko is a fully integrated dual-channel, dual-mode UART/SIO (serial I/O) communication controller. It is designed to provide and to control all the necessary functions for full-duplex, asynchronous serial communications. The module supports two independent communication protocols; RS-232C and RS-485, as well as multiple clock speed and baud rates up to 115 Kbps. It is fully RoHS compliant and provides excellent EMI/RFI protection. The CTM8251KD is ideal for applications that require control of multiple serial communications channels, such as industrial control systems, point of sale systems, data acquisition systems, and other specialized applications.