About the ADM1485 "Differential Input Threshold Voltage"

Hello,

About the ADM1485,

Does "Differential Input Threshold Voltage" change due to fluctuation of Vcc?

In the board suspected of fluctuation of Vcc, a plurality of points switching
from High to Low was confirmed.(For example, +3mV, +12mV, +25mV)

(Since Vcc is usually constant,
 "Differential Input Threshold Voltage" is a fixed value between -0.2 V and +0.2 V.)

Regards,
Tatsu