X1, X3, X5, X7, X8, X9, X10, X11 Terminals
There is an input delay time of 0.5 milliseconds for ON→OFF and 5
milliseconds for OFF→ON.
When running sampling every 0.5 milliseconds
0.5 milliseconds (ON→OFF) + 0.5 milliseconds (Sampling Interval) +
0.5 milliseconds (OFF→ON) = 1.5 milliseconds
As a result, 1.5 milliseconds is the limit for the smallest input
pulse width.