Please check if the contents of the attached figure among the contents of "10.2.1.2.1 Bidirectional Translation" on page 14 of the data sheet are errors.
"The output of A3 and B4 has a maximum output voltage equal to Vref_A"
"The output of A3 and A4 has a maximum output voltage equal to Vref_A"
If the data sheet is correct, if A3, A4, B3, and B4 do not have pull-up resistors, is the maximum output voltage the same as Vref_A?