Make sure that the voltage levels are maintained and a reference
to the PC ground (PC_GND) is established, when connecting the
digital inputs / outputs directly.
„Low“: U
OL
: max. 0.6
V.
Output level „High“: U
OH
: typ. 5
V ±10
% (USB supply voltage).
„Sink“-current: I
OL
= max. -9
mA @ U
OL
= 0.6
V.
„Source“-current: I
OH
= max. +5
mA @ U
OH
= 1.4
V.
Input level „Low“: U
IL
: max. 1.44
V.
Input level „High“: U
IH
: min. 3.36
V.
Input current: ±1
nA.