Low Profile PCI 1-Port RS-232, RS-422, RS-485 Isolated Serial Interface

Part: 7108   Model: Ultra COMM+I.LPCI


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The 7108 Low Profile PCI serial interface provides one optically isolated serial port configurable for RS232, RS-422, or RS-485. The board is capable of data rates to 921.6K bps and automatically handles RS-485 transmitter enable/disable.

The 7108 utilizes a 16C850 UART to provide 128-byte Tx/Rx FIFOs for maximum reliability in data-intensive applications. The board is MD1 Low Profile and Universal Bus (3.3V and 5V) compatible and ordering options allow the choice of UARTs for custom baud rates and 9-bit protocols.

The Sealevel SeaCOM software driver and utilities make installation and operation easy using Microsoft Windows or Linux operating systems.

The 7108 is compatible with any low profile PCI slot. A standard profile bracket  is also included.


Additional information

Communications Chip


Electrical Interface

RS-232, RS-422, RS-485

Humidity Range

10 – 90% Relative Humidity, Non-Condensing

Host Interface(s)


Max Data Distance

4000 feet

Max Data Rate

921.6K bps

Optically Isolated


Operating Temperature

0°C to 70°C (32°F to 158°F)

PC Bracket

Low Profile, Standard Height

# of Ports


RoHS Compliant


Serial Connector(s)


Storage Temperature

-50°C to 105°C (-58°F to 221°F)

UART Series

850 UART

  • Compliant with RoHS and WEEE directives
  • Configurable for RS-232, RS-422, or RS-485
  • Optical isolation provides protection against transients and ground loops
  • 16C850 buffered UART with 128-byte FIFOs
  • Data rates to 921.6K bps
  • MD1 Low Profile and Universal Bus (3.3V and 5V) compatible
  • Automatic RS-485 enable/disable
  • DB-25M connector

Windows Software

Software: SeaCOM - Windows

Linux Software

Software: SeaCOM - Linux


Datasheet: 7108


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