TCAL9539-Q1: More expansion ports

Jimmy Gong

Part Number: TCAL9539-Q1
Other Parts Discussed in Thread: TCA9548A-Q1

Hi team,

Since my customer would like to design Body control module(BCM) that will need a lot of GPIO ports. Do we have solution with more expansion ports than TCAL9539-Q1?

BR,

Jimmy

over 2 years ago

+1 Clemens Ladisch over 2 years ago

Guru 317350 points

There is no automotive-qualified expander with more GPIOs. You could combine up to four TCAL9539-Q1‍s on the same bus, and create more bus segments with a multiplexer like the TCA9548A-Q1.

0 BOBBY over 2 years ago

TI__Guru 73891 points

Hi Jimmy,

As Clemen's pointed out we do not currently have an IO expander larger than 16 bits which is automotive qualified. The work around would be to use multiple in parallel.

-Bobby

0 Jimmy Gong over 2 years ago in reply to BOBBY

TI__Expert 3600 points

Thanks for your explanation Clemens and Bobby.

BR,

Jimmy

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TCAL9539-Q1: More expansion ports