Digi TransPort WR31 - Page 53

Hardware TransPort WR31 hardware
Digi TransPort WR Routers User Guide 53
Digital and analog I/O specifications
Digital I/O specifications
Digital input specifications
▪ This input is a non-inverting Schmitt-trigger input.
▪ The default state at power-up with no voltage applied is LOW.
Digital output
▪ This output is an open-collector, sinking driver output.
▪ The default state at power-up is off.
Specification Min Nom Max Units
Rated Input Voltage -0.2 30 V
Rated Input Current -1.0 200 mA
Pull-Up Resistance 10 k Ohms
Specification Min Nom Max Units
+ Threshold .. 1.6 .. V
- Threshold .. 1.0 .. V
Input impedance 1 M Ohms
Specification Min Nom Max Units
Sink Current .. .. 200 mA
Pull-up Voltage 3 V