I have a circuit with the NVT2006BS,188 (joined), trying to shift between VrefA(1.8V) and VrefB(3.3V). With a 20k square signal to test the circuit on An, I have a 1.8V square signal on Bn, even with the 3.3V pull-ups. If I do the opposite, i get 2.37V on An. We added the 200k resistance before EN and VrefB, didn't change the results. Anything you can suggest, we're doing wrong?