The 7903 is a 3U Compact PCI interface adapter with two isolated serial I/O ports. It provides two field selectable RS-232, RS-422, or RS-485 serial ports supporting data rates up to 921.6K bps. Isolation is important in installations where the equipment connected to the PC is either located far from the host system, or on a different power transformer circuit.
Hot Swap compliant (PICMG 2.1 Rev. 3.0)
PCI bus 2.2 compliant
Automatic RS-485 Enable and Disable
Supports data rates up to 921.6K bps
16850 buffered UART standard
Universal 3.3 and 5V compatible
Full RS-232 control signals supported