Digital I/O Board w/CoS IRQ

Digital I/O Board w/CoS IRQ

*48 or 24 parallel lines of 82C55 digital I/O with tristate buffers prevent unintended control of external equipment
*IRQ on input change of state (COS) eliminates the need for constant polling
*High sink/source current 64mA/32mA
*I/O pulled up to 5V for contact monitoring
*Compatible with Opto-22 and other industry standard I/O racks

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