PCI 4-Port RS-232, RS-422, RS-485 Serial Interface The 7404 PCI serial interface provides four field selectable ports configurable as RS-232, RS-422, or RS-485 supporting asynchronous data rates up to 460.8K bps. In RS-485 mode, our auto-enable feature allows the 7404 to be viewed by the operating system as a standard COM port. The 7404 is Universal Bus (3.3V and 5V) compatible and can be installed in a standard height PCI slot. The included 36-inch cable terminates to four DB9 Male connectors.
Features:
- Compliant with RoHS and WEEE directives
- Each port individually configurable for RS-232, RS-422, or RS-485
- 16C864 buffered UART with 128-byte FIFOs
- Data rates to 460.8K bps
- Automatic RS-485 enable/disable
- Universal Bus (3.3V and 5V) compatible
