non-inverting schmitt trigger op amp - replacing a zener diode on the input

I wonder if it is possible to replace the second figure below with the first one? Would both Vo output be the same on the figures below? If they are different, could anyone explain it by numbers? I don't have a zener diode. I wonder would it be possible to replace the zener diode with resistors/capacitor/inductor/transistor?

Datasheet of the comparator.
Datasheet of the zener diode.

• Please draw real schematics using real opamp and comparator symbols. It is impossible to "see" the circuit from these diagrams without first figuring out the schematic. May 3, 2013 at 20:14
• The main reason to limit the ability to post pictures and multiple links is to fight spam, of which we get quite a lot. Users with more reputation points can edit questions and answers. May 3, 2013 at 20:15
• @ Olin Lathrop: it might be a problem for you. But I don't think it is a problem for one who use datasheets, and the figure clearly says that it is a comparator(om amp) the terminals are well defined (in A-; inA+; out A). Lastly, this attitude is not constructive.
– sven
May 3, 2013 at 20:28
• @sven - EVERY diagram in that datasheet except the one intended to show the physical pinout (which is not part of a schematic) is not drawn the way your diagram is drawn. Saying you're using the same figure as the datasheet is disingenuous, as the figure in the datasheet that resembles yours is only drawn that way to properly show the mechanical-electrical correspondence, not as part of a circuit. May 3, 2013 at 20:58
• @ Connor Wolf: I am sure you have seen million times more diagrams than I saw how such ICs are represented on diagram.and I believe the diagram is very obvious to understand, especially as I link to the datasheet. My reaction is minusing a question because of one does not do what other wants. As I said, I will bear it on mind how I should draw the diagram next time. I think keeping arguing on how I should have drawn the figure is waste of effort and no use for anyone.
– sven
May 3, 2013 at 21:23