https://ez.analog.com/optical_sensing/w/documents/32709/external-clock-requirements-for-maxm86146-for-32kin-pin
External Clock Requirements for MAXM86146 for 32KIN Pin - Documents - Optical Sensing Library -...
The V IH and V IL levels for the 32KIN pin should be the same as the GPIO, but since this pin is not characterized specifically during production, the voltage...
external clockoptical sensingrequirements