Hi Sirs,
As title, because we have the opportunity to have +/- 500mV voltage level on input pin.
We have use and saw LM393DR
Recommended Operating Conditions is 0 to (V+)-1.5v.
Absolute Maximum Ratings is -0.3 to 36v
Looks it's not meet spec.
Unfortunately I don't find other solution can do it.
Could you help double confirm if i missed?
Thanks for your help.