SC16C654B/654DB - 5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.), with 64-byte FIFOs and infrared (IrDA) encoder/decoder QFP 64-Pin
Quad UART Controller, 5Mbps, 64B FIFO, 5V, LQFP-64
IC UART QUAD W/FIFO 64-LQFP