I am using 2 SN74AUP1G07 O/D buffers connecter to each other for doing some voltage translation. I want to confirm the amount of current needed to source the input of this chip to a high state and what the worse case loading on the input pin could be? I currently have the O/D buffer of the first chip with a 100K pull-up and I am running at 600 baud. I have some boards where the signal is getting cutting in half (should swing between 0-1.5V but on the failing boards swings at certain times form 0-0.75V) and don't quite understand why. It almost like the loading is changing at certain times.