| Applications | 
| 
 |  Industrial ON/OFF control
 |  Digital I/O control
 | 
| 
 |  Contact closure monitoring
 |  Industrial and lab automation
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| 
 |  Switch status sensing
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| Features | 
| 
 |  48 digital I/O lines emulate two 82C55A PPIs
 |  FPGA based design
 | 
| 
 |  16 extra nibble programmable digital I/O
 |  EXT/INT irq trigger, programmable irq number
 | 
| 
 |  Dual 50-pin connectors for OPTO22 compatible module racks
 | 
| 
 |  Circuit diagram provided for potential customer to field change
 | 
| Specifications (With Matched Wiring Board) | 
| 
 | Main Card -- Power Requirement | 
| 
 |  Power supply range : 5Vdc
 |  Power consumption : 50mA @5V
 | 
| 
 | Main Card -- Input Section (@Vcc=4.5V) | 
| 
 |  Logic high voltage : 3.15V(min)
 |  Input high current : 1uA(max)
 | 
| 
 |  Logic low voltage : 1.35(max)
 |  Input low current : -1uA(max)
 | 
| 
 | Main Card -- Output Section (@Vcc=4.5V) | 
| 
 |  Logic high voltage : 3.84V(min) @6mA load
 |  Output high current : -35mA(max)
 | 
| 
 |  Logic low voltage : 0.33V(min) @6mA load
 |  Output low current : 35mA(max)
 | 
| 
 | Main Card -- Interrupt | 
| 
 |  Mode : INTernal / EXTernal
 |  Trigger in : PC00 / PC10
 | 
| 
 |  Enable/Disable : PC04 / PC14
 |  Irq no. : irq2-irq7, jumper selectable
 | 
| 
 | Main Card -- General | 
| 
 |  Operation temperature : 0 to +70 degree C
 |  Operation humidity : 5~95% RH, non-condensing
 | 
| 
 |  Storage temperature : -20 to +80 degree C
 |  Dimensions: 90(W)*96(H) mm, 3.6(W)*3.8(H) in
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