PCA9306: Do we have a suitable part that could prevent bi-directional leakage for 1.8V/3.3V or 3.3V/3.3V Level shifting

This would be a possible with a direction-controlled translator. What kind of signals are this? Is any single line bidirectional?

It is I2C. Need to support the maximum data rate 3-4MHz. The key consideration is to prevent the leakage from Side A-B and also B-A in case the pull-up power rail is not active at the same time.

May I know if you have any IC in mind which is suitable for the requirement?

Thanks

A direction-controlled translator would not work with I²C.

Translators like LSF and TXS leak through the power supply pins. I guess it is not possible to pull the LSF's EN pin low?

Is it OK to prevent the leakage if we tie the EN pin to the power rail that rises later? Or may be if we connect the EN to MCU to draw it low.

I mean, if we disable the device, but the power rail on one side raise earlier than the other, could any of the device could stop the leakage between the 2 power supplies?

Do you know which supply rises first?

If EN is pulled low, it must be done actively with an open-drain driver; see Using the Enable Pin with the LSF Family.