TCA9548A: Unused SDn /SCn pins

Shinichi Inoue

Guru 21701 points

Part Number: TCA9548A

Dear Specialists,

My customer is considering TCA9548A and has a question.

Could you please advise?

---question

There are 8 I2C lines in tCA9548A and some lines are not used.

In this case, where to connect unused SDn and SCn pin.

I appreciate your great help.

Best regards,

Shinichi

0 fhoude over 8 years ago

Hello Shinichi1,
You should tie unused ports high with a pull up resistor.
-Francis Hou

0 Shinichi Inoue over 8 years ago in reply to fhoude

Guru 21701 points

Dear Francis

Thank you for your reply.

I'll make the customer connect H via pull up resistor.

I appreciate your great help.

Best regards,

Shinichi

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