TCA9539-Q1: [ZF] INT connection

Mingkang Song

Part Number: TCA9539-Q1
Other Parts Discussed in Thread: TCA9539

Tool/software:

Dear team,

If all ports of TCA9539 are set to output mode, then the INT pin has no meaning. Can the INT pin be left unconnected? Thanks!

Regards,

Mingkang

+1 Clemens Ladisch 10 months ago

Guru 317280 points

Yes, an unused output can be left open.

+1 Tyler Townsend 10 months ago

Hi Mingkang,

If /INT is unused, it can be left floating and unconnected.

Regards,

Tyler

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