Digital Input Module Operating Instructions And Specification Sheet
Table Of Contents

NI 9426 Operating Instructions and Specifications 10 ni.com
Input type .......................................... Sourcing
Digital logic levels
OFF state
Input voltage
1
....................... ≥ (V
sup
– 5 V)
Input current......................... ≤150 μA from DI pin
ON state
Input voltage
1
....................... ≤ (V
sup
– 10 V)
Input current......................... ≥330 μA from DI pin
Hysteresis
Input voltage ........................ 1.9 V min
Input current......................... 65 μA min
Input impedance................................ 30 kΩ ±5%
I/O protection (V
sup
-to-channel)
Input voltage............................... 30 V max
Reverse-biased voltage............... –30 V max
1
V
sup
is the external power supply voltage.