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Part# 7804

(Ultra COMM+8.PCI)

PCI 8-Port RS-232, RS-422, RS-485 Serial Interface


$449.00


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The 7804 is a multi-interface, eight port, Universal Bus (3.3V or 5V) compatible PCI adapter. Offering eight individual field-selectable RS-232, RS-422, or RS-485 channels, the 7804 delivers ultimate flexibility for expanding serial communications.

The 7804 supports standard PC data rates and boasts a top speed of 921.6K bps. The board is designed using the XR16C864 UART, which provides a 128-byte FIFO, eight times larger than boards designed with 16C550 compatible parts. The larger buffers allow error free operation even in high-speed applications. In RS-485 mode the board provides automatic control of the RS-485 driver enable for trouble free network master arbitration. Additionally, RS-485 network termination, critical to robust multi-drop communication, can be selectively added to the circuit via DIP-switches.
Host Interface(s) PCI
# of Ports 8
Electrical Interface RS-232, RS-422, RS-485
RoHS Compliant Yes
UART Series 850 UART
Serial Connector(s) DB9M
PC Bracket Standard Height
Communications Chip 16C864
Max Data Rate 921.6K bps
Max Data Distance 4000 feet
Operating Temperature 0 - +70C
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
  • • Compliant with RoHS and WEEE directives
  • • Each port individually configurable for RS-232, RS-422, or RS-485
  • • 16C864 buffered UARTs with 128-byte FIFOs
  • • Data rates to 921.6K bps
  • • Universal Bus compatible (3.3V and 5V signaling)
  • • Requires 3.3V power on PCI bus
  • • Automatic RS-485 enable/disable
  • • Included 36" cable terminates to eight DB9M connectors (Item# CA145)






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