Hi, when testing the lsf0108 to shift from 3V to 5V, I found the datasheet to specify that VrefA must be less than VrefB. Problem is, when I hook the IC up that way, all my side A data lines are pulled up to 3.8V or thereabouts and all my 5V lines are pulled down to 4.2volts or thereabouts.
When I allow VrefA=5V and VrefB=3V, I get the values that I'm looking for on each side. (Schematic represents this config.) What am I missing here?
--thanks ahead of time!