design problem of hysteresis inverter

[gdhp]

hi all

i am designing a hysteresis inverter. The structure is composed of three

inverter. The power is 3.3v. The up and down triger voltage are about 0.5v and

1.1v.

Can anyone give some suggestions about how to modify the triger volage?

and can some give some materestrials?

Thank you!

 

[soccer]

who can explain what is a hysteresis inverter?

 

[gdhp]

this a inverter whose up trigger voltage and down trigger voltage are not same. (just as the Smitter Trigger)