Owner's manual

Appendixes
6
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Appendix A: Specifications
PowerDAQ DIO specifications:
All external I/O on the PowerDAQ DIO boards are 7 kV ESD protected
and +35/-5v Overshoot/Undershoot protected. PDL-DIO and PDXI-DIO
models provide 10Kohm pull-ups on all I/O lines. They may be
optionally left unpopulated based on customer request.
IO subsystem
64 lines of digital I/O in four 16-bit ports or 128 lines of digital I/O in
eight 16-bit ports
DC Electrical Characteristics over Operating Range
The Following Conditions Apply:
T
A = –40°C to +85°C
Parameter Test conditions Result
Input High Level Guaranteed logic 2.0V min
High level
Input Low Level Guaranteed logic 0.8V max
Low level
Input High Current VI = 5V ±1 µA max
Input Low Current VI = Gnd ±1 µA max
3-State Output Current VO = 2.7V ±1 µA max
3-State Output Current VO = 0.5V ±1 µA max
Short-Circuit Current VO = Gnd -80 mA min
-140 mA typ
-250 mA max
Input Hysteresis 100 mV typ
Note The maximum I/O rate for –CT boards are
1600 kS/s for fixed CL-mode and 500 kS/s for
unlimited CL-mode. PC-timed update: 1000 Hz – 10
kHz.