PL2303SA is a USB to Serial Bridge Controller IC manufactured by Prolific Technology Inc. It is a low-cost, low-power, highly integrated solution for USB to RS232/RS422/RS485 interface bridge application. It is available in SOP-8 package with 150 mil width and is RoHS compliant. It is capable of up to 1Mb/s data transfer rates, and supports various baud rate settings from 600 up to 460K. It also supports up-to 24Mbps USB operation and supports both 5V and 3.3V systems. It provides a single chip solution for replacing expensive and bulky conventional UARTs.