SN74AUP1G07: Low level input voltage at VCC 0.8V

Hi experts,

My customer wants to replace 74AUP1G07 to our SN74AUP1G07. And they are using 1V of VCC in this application. However in case of VCC voltage drop to 0.8V, they asked if SN74AUP1G07's low level input must be 0 at that situation. Compared to SN74AUP1G07 datasheet, 74AUP1G07's input range has more margin that ours.

So, My question is that if SN74AUP1G07's VCC is 0.8V, what will be the output when the input is 0.2V?

Thanks,

Jay