Part Number	NS16C2552 Datasheet
Manufacturer	National Semiconductor
Overview	The NS16C2552 and NS16C2752 are dual channel Universal Asynchronous Receiver/Transmitter (DUART). The footprint and the functions are compatible to the PC16552D, while new features are added to the UA. are added to the UART device. These features include low voltage support, 5V tolerant inputs, enhanced features, enhanced register set, and higher data rate. The two serial channels are completely independent of each other, except for a common CPU interface and crystal input. On power-up both channe.