The LMK04816 datasheet, Section 3.1 Absolute Maximum Rating does not have information on maximum rating for Digital Input pins (uWire bus). So, what is the maximum current through those pins or any pin in a powered or unpowered condition? Especially, when LMK04816 is powered down, but the device that is connected to LMK04816 is powered up. How vulnerable will the LMK04816 be under that condition?