I came across a simple hex inverter IC with the truth table having "z" as an output state for a low (L) input. So what does Z stand for here? Does it mean a toggle or partial state? The other variant of this IC which does not use open drain outputs has the usual Function table of an inverter.
L | H
H | L
Function table(with open drain):
L | Z
H | L
The device description is as :
"The device contains six independent inverters. These devices perform the Boolean function Y = A. The open-drain outputs require pull up resistors to perform correctly, and can be connected to other open-drain outputs to implement active-low wired-OR or active-high wired-AND functions"