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Appendix A Specifications
PC-DIO-24/PnP User Manual A-2
©
National Instruments Corporation
Output Signals
Pin 49 (at 4.65 to 5.25 VDC).............. 1.0 A max
Power Requirement
+5 VDC (±10%)................................. 0.45 A typ, 1 A max
Physical
Dimensions ........................................ 11.7 by 10.6 cm (4.6 by 4.2 in.)
I/O connector ..................................... 50-pin male ribbon-cable
connector
Input high current
(V
in
= 5 V, W1 set to pulldown)
— 65 µA
Input logic low current
(V
in
= 0 V, W1 set to pullup)
— –65 µA
Input logic low current
(V
in
= 0 V, W1 set to pulldown)
— –11 µA
Level Min Max
Output logic high voltage
(I
ol
= –2.5 mA)
3.7 V 5.0 V
Output logic high voltage
(I
oh
= –4 mA)
2.7 V 5.0 V
Output logic low voltage
(I
ol
= 2.5 mA)
0 V 0.4 V
Output logic low voltage
(I
ol
= 4 mA)
0 V 0.5 V
Level Min Max