GENERAL DESCRIPTION
The ST16C550 (550) is a universal asynchronous receiver and transmitter with 16 byte transmit and receive FIFO. It operates at 2.97 to 5.5 volts. A programmable baud rate generator can select transmit and receive clock rates from 50 bps to 1.5 Mbps.

FEATURES
• Pin to pin and functionally compatible to the Industry Standard 16C550
• 2.97 to 5.5 volt operation
• 24MHz clock operation at 5V
• 16MHz clock operation at 3.3V
• 16 byte transmit FIFO
• 16 byte receive FIFO with error flags
• Full duplex operation
• Transmit and receive control
• Four selectable receive FIFO interrupt trigger levels
• Standard modem interface
• Compatible with ST16C450
• Low operating current ( 1.2mA typ.)