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TCA39306: About EN control circuit

Part Number: TCA39306

Hello,

I have a question.

When EN is turned on in the circuit shown above, the level of SCL1 and SDA1 goes from 1.2V to approximately 2.2V.

When connected as shown in Figure 8-6 and controlling VCC2, the SCL1 and SDA1 levels remained at 1.2V.

Does EN have to be connected as shown in Figure 8-6?

Best Regards.