In summary, the integrated voltage level shifters make these devices an ideal fit in applications with multiple voltage rails and it is necessary for data to flow from one device operating at one voltage level to a device that operates at a different voltage level. Other features, such as zero nanosecond address setup/hold time, different Tx/Rx data rates, 4x/8x sampling options, and a fractional baud rate generator make designing with the XR20M1280 and XR16M890 simple, flexible and cost efficient.