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LM393: Non zero output from LM393 even though input is zero

Part Number: LM393

I was using LM393 as voltage comparator in non inverting configuration
I gave 5V to vcc and 2.5V to inverting pin through a potentiometer
The issue is I am getting a output voltage of approx 3.8V even when the supply to the non inverting terminal is zero

I get output no matter I set the voltage of the non inverting pin zero or less than or more than that of inverting terminal
Also the ic gives the same output when non inverting is given some voltage and inverting is zero

The ic output gets zero only when both inverting and non inverting terminals are zero

Please help me to sort this

I desire to get high output only when the voltage at non inverting is greater than that at inverting i.e 2.5V

The issue is when I test the comparator individually ,it works fine, i.e it will give output only when noninverting is greater than inverterting

But when I connect it in the whole circuit the same issue occurs of giving output when noninverting is zero


The four comparators marked in the circuit have issue