LSF0102: Inquiry for Vref level

Hi, TI support team

I'm looking for a level shifter.

Vref A=1.8V, Vref B=3.0V

In the case of LSF0102, the Vref level is indicated as shown in the figure below.

In the case of the TXS0102, the Vcc level is indicated as shown in the figure below.

Should the Vref value of LSF0102 be entered at the indicated level?

Can't Vref B=3.0V be applied?

Thanks.

Regards,

MJ