[sdiy] In search of a reasonably precise comparator output

[Guy McCusker]

Hello,
I am "designing" (i.e. cobbling together) a circuit in which I need a
comparator whose output is fairly accurately 0V or 5V.

I can think of many ways to do this. Some are very stable (at least on
paper) but appallingly complicated, which is bad because I need at
least 7 of these;  some are very simple but rely on careful trimming
of the saturation voltage of an op amp, which I would rather not do
for reasons of reproducibility.

It is 100% likely that someone on this list has a very simple and
solid way to do this, so rather than reinvent the wheel I thought I'd
ask... how would you do it?

(What I really want, in fact, is to take an input voltage X and output
X if X<=5, or X-5, if X>5.)

Guy.