The roboRIO's Specification Sheet does not give a maximum input voltage for its digital inputs. Can the roboRIO's DIO handle a 12VDC input?
The maximum allowable input voltage is 5.25 VDC. Anything higher could potentially cause damage to the roboRIO.
In page 4 of the Specification Sheet it's mentioned:
Input logic levels
Input low voltage = VIL 0.0 V min; 0.8 V max
Input high voltage = VIH 2.0 V min; 5.25 V max
While it is not specified as the maximum allowed voltage, the Logic Level shows the hardware's capability in these terminals, thus establishing the Maximum Allowed Voltage, too.
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