Hi Brian, Thanks for your post! If you look at table 6.5 of the datasheet, you will see that the Low-level output voltage is either 0.1V or 0.4V depending on your operating conditions. However, from your screenshot it looks like the low level is sitting around 4V - much higher than the max spec in the datasheet. This could be related to the output drive strength of the device, but I will have to do some additional digging to find a solution for this. Testing the part independently would be the best way to confirm if it's a system level or device level issue, but I'm assuming this is not easily possible for you. Give me some time and I'll see what I can do.
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