Qestion about hysteresis comparator

[saber_haijun]

I find it's very difficult to compromise between hysteresis voltage and delay time when we want the hysteresis voltage is larger than 400mV from the basic hysteresis comparator structure.
For example, I can ensure the 500mV hyrsteresis voltage, but the delay time is huge [about tens of us].
Please tell me if you guys have any new structure which can solve this problem!

Thank you in advance!

best regards

 

[wonbef]

you can search some high speed structure