Part Number: LMH1980
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Part Number: LMH1980
Hello,
the supply voltage tolerance is shown here: 
From the absolute maximum rating you can see that it is not allowed to have a signal on Vin which is greater then VCC+0.3V.

If VCC is 0V then the max input signal must be <0.3V in order to avoid potential damage to the IC.
regards,
Julian