Hi,
I'm using LSF0108PWR with VREFA at 1.8V and VREFB at 3.3V with 1K pull up for all the 8 input and output channels.
I'm driving/receiving the VREFB signals with Tiva MCU. What I see is that the first 2 channels out of 8 are working as expected, the rest are not. Because of the pull up both input and output channels are "high" to the respective voltage, when I drive a low from the controller the first 2 channels drops to about 0.5V and the output are 0.5V respectively. The other 6 channels drops to 3V from 3.3V and stay high at the output. This is done one channel at a time.
Why is this behaving like that?
