National Instruments PC-DIO-24/PnP User Manual
Page 28
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Chapter 3
Signal Connections
© National Instruments Corporation
3-5
PC-DIO-24/PnP User Manual
Digital output specifications (referenced to GND):
Output logic high voltage
3.7 V min
5.0 V max
(I
ol
= –2.5 mA)
Output logic high voltage
2.7 V min
5.0 V max
(I
oh
= –4 mA)
Output logic low voltage
0 V min
0.4 V
(I
ol
= 2.5 mA)
Output logic low voltage
0 V min
0.5 V
(I
ol
= 4 mA)
Figure 3-2 depicts signal connections for three typical digital I/O
applications.
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