TCA9543A: TCA9543APWR

Manikandan Ramasamy

Prodigy 150 points

Part Number: TCA9543A

Hi Team,

I'm planning to use the part TCA9543APWR in my design.

The query is whether the Interrupt pins must be connected ?

My interest is to share the I2C bus to slaves has same address.

Is that interrupt is mandatory?

I'm glad for any comment.

Regards,

Manikandan Ramasamy.

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 317370 points

The interrupt inputs must not be left floating; just connect them to V_CC. The interrupt output can be left open.

0 Jack Guan over 2 years ago in reply to Clemens Ladisch

TI__Mastermind 41216 points

Hi Manikandan,

Clemens is correct here- the interrupt input needs to be at a valid state while the interrupt output can be left open as it is an open drain configuration. Also see this FAQ for more information.

Regards,

Jack

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TCA9543A: TCA9543APWR