LSF0102: Both of A and B are with 3.3V Vpu when Vref_A= 1.8V or 3.3V and Vref_B= 5V

Hi,

In LSF0102 datasheet, it doesn’t mention the application regarding both of A side and B side are 3.3V. 
Here, Vref_A= 1.8V or 3.3V and Vref_B= 5V

According to application note, https://www.ti.com/lit/an/slva675b/slva675b.pdf [ti.com]

The Vpu could be on either the A-side or B-side, resistors can pull up to any voltage between Vref_A and 5 V

That means the Vpu is 3.3V at both A and B are okay, please help to double confirm this.

Thanks and Best regards,

Tiger