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Part# 7901

(COMM+2.cPCI)

3U Compact PCI 2-Port RS-232, RS-422, RS-485 Serial Interface


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This product is classified as legacy and is not recommended for new or high volume designs.

Sealevel will support legacy products through technical and warranty support, software drivers and product manuals. Please contact Sales for further information. For new product designs, we recommend the 7205e.

The 7901 is a 3U compact PCI serial interface that provides two RS-232, RS-422, or RS-485 serial ports for demanding automation and control applications. Each port can be field configured to RS-232, RS-422, or RS-485 for maximum flexibility. Our revolutionary Automatic RS-485 Enable circuit is included onboard to simplify multidrop network connections. 16C850 UARTs with deep 128 byte FIFOs are standard to reduce system overhead, even at high speeds.

For user's that require custom baud rates, isochronous communications, or 9-bit protocol, the 7901 compact PCI serial interface is available with the Oxford 16C950 UART. Call for details.

Note: This item has a minimum order quantity (MOQ) of 25 units. Please contact your sales representative with any questions.
Host Interface(s) Compact PCI
# of Ports 2
Electrical Interface RS-232, RS-422, RS-485
UART Series 850 UART
Serial Connector(s) DB9M
Communications Chip 16C850
Max Data Rate 460.8K bps
Max Data Distance 4000 feet
Operating Temperature 0 - +70C
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
  • • Two port field selectable RS-232, RS-422, or RS-485 interface
  • • Automatic RS-485 Enable and Disable
  • • Hot Swap compliant (PICMG 2.1 Rev. 3.0)
  • • PCI bus 2.2 compliant
  • • Universal 3.3 and 5V compatible
  • • Full RS-232 control signals supported
  • • 16850 buffered UART with 128-byte FIFO






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