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Part# 3089

(Ultra-SIO)

ISA 2-Port RS-422, RS-485 Serial Interface


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THIS PRODUCT IS OBSOLETE DUE TO LACK OF COMPONENT AVAILABILITY. PLEASE CONTACT YOUR SALES REPRESENTATIVE FOR FURTHER INFORMATION AND NEW PRODUCT ALTERNATIVES.

Sealevel will support legacy products through technical and warranty support, software drivers and product manuals. Please contact Sales for further information.

The 3089 ISA serial interface provides the PC with two RS-422, RS-485 Asynchronous links to data collection and other devices. Individually selectable addresses and extended "AT" interrupts allow for seamless integration. The 3089 appears to the host system as a standard COM: port requiring no special drivers or additional software. For user's that require custom baud rates, isochronous communications, or 9-bit protocol, the 3089 ISA serial interface is available with the Oxford 16C950 UART, part number 3089-SN.
Host Interface(s) ISA
# of Ports 2
Electrical Interface RS-422, RS-485
UART Series 550 UART
Serial Connector(s) DB9M
Communications Chip 16550
Max Data Rate 115.2K bps
Max Data Distance 4000 feet
RS-485 Operation Full Duplex (4 wire), Half Duplex (2 wire)
Operating Temperature 0 - +70C
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
  • • Automatic control of RS-485 driver enable
  • • Selectable COM: port address
  • • Selectable and sharable IRQ (2-7,10-12,14 and 15)
  • • Compatible with existing communication drivers
  • • 16-bit addressing eliminates I/O conflicts
  • • Isolated version available






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