Digital I/O Board w/CoS IRQ

104-DIO-48S - Acces I/O Products, Inc.

*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