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$380.00 (USA and Canada only)

Availability: In stock
OBSOLETE ISA Bus Serial Port RS422/485, Isolated

Production Specification

*** NOTE: This part is obsolete and no longer available when current stock is depleted. ***

ISA Bus Serial Port RS422/485, Isolated

AC24AT [Obsolete]

Power Requirements

250 mA at 5 VDC
150 mA at 12 VDC
150 mA at -12 VDC

Operating Temperature Range

0 °C to 60 °C
95% relative humidity, non-condensing


4,000 VAC


RS-422/485 (9-pin, D-shell female connector)

Baud Rate

up to 38,400 baud


up to 5,000 feet


full duplex over two twisted pairs and a ground
additional twisted pairs for RTS and CTS


transmit, receive, RTS, and CTS


ISA Bus RS-422/485 (with Isolation) Adapter Card Data Sheet

The AC24AT is an RS-422/485 adapter card that plugs directly into the IBM PC bus and provides up to 4,000 VAC isolation between the PC bus and the communications link.

AC24AT_AC422AT Users Guide

The AC24AT and AC422AT cards provide an asynchronous RS-422/485 communications port for the ISA bus. The adapter cards are seen by the computer as standard COM ports.

Opto 22 RoHS 3 Statement of Compliance - Restriction of Hazardous Substances

This document is a statement of compliance with the EU Directive 2015/863/EU, Restriction of Hazardous Substances (RoHS 3). This document lists Opto 22 products that comply with the substance restrictions of the RoHS 3 directive.

CE Declaration: Component

This document is the Manufacturer's Declaration for the listed products as mentioned in the attachment - to which this confirmation refers - that they are in accordance with the mentioned European, international and/or national standards and regulations.

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