[sdiy] 3 bit A to D with hysteresis?

[Paul Perry]

Is there an elegant way to make a simple & cheap
3 bit A to D  with hysteresis?
I'm hoping to have a footpedal give a control voltage
that drives a 3 bit output counter, but wiht hysteresis so 
there is no problem of being stuck on the edge &
stuttering.
Maybe there is an 'obvious' solution applicable to all
A to D converters?
(yeah, I know...... use a micro...... but before I do....)

paul perry melbourne australia