Measurement Computing PC104-DIO48 - Manual (Page 15)

4 SPECIFICATIONS
Power consumption
+5V Operating 130 mA typical, 200 mA max
Digital Input / Output
Digital Type 82C55
Configuration 4 ports of 8, 4 ports of 4,
programmable by port as input or
output
Number of channels 48 I/O
Output High 3.0 volts min @
−
2.5 mA
Output Low 0.4 volts max @ 2.5 mA
Input High 2.0 volts min, +5.5 volts absolute max
Input Low 0.8 volts max,
−
0.5 volts absolute min
Power-up / reset state Input mode (high impedance)
Miscellaneous Locations provided for installation of
pull-up or pull-down resistors.
Environmental
Operating temperature range 0 to 50°C
Storage temperature range
−
20 to 70°C
Humidity 0 to 90% non-condensing
11