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www.DataSheet4U.com
MAY 2007
XR16V554/554D
2.25V TO 3.6V QUAD UART WITH 16-BYTE FIFO
REV. 1.0.1
GENERAL DESCRIPTION
The XR16V554 (V554) is a quad Universal Asynchronous Receiver and Transmitter (UART) with 16 bytes of transmit and receive FIFOs, selectable receive FIFO trigger levels and data rates of up to 4 Mbps at 3.3 V. Each UART has a set of registers that provide the user with operating status and control, receiver error indications, and modem serial interface controls. An internal loopback capability allows onboard diagnostics. The V554 is available in a 48pin QFN, 64-pin LQFP, 68-pin PLCC and 80-pin LQFP packages.