TCA9554A: Alternative parts that has higher operating temperature

Barton Tung

Prodigy 660 points

Part Number: TCA9554A
Other Parts Discussed in Thread: TCAL9538

Hi Expert,

My customer is looking for a P2P replacement of TCA9554A that has a higher operating temperature of -40 ~ 95 degree-C.

Please advise. Thanks

Regards,

Barton

8 months ago

+1 Clemens Ladisch 8 months ago

Guru 262920 points

There is no P2P device. The nearest replacement would be the TCAL9538, with /RESET input at pin 3, and a different I²C device address.

+1 Tyler Townsend 8 months ago

TI__Mastermind 27773 points

Hi Barton,

Clemens is correct here. No P2P compatible TCA9554A replacement designed for higher operating temperature. The next closest device is the TCAL9538 which has an ambient temperature rating of -40C to 125C.

I would also like to note that the recommended operating voltage for this device is 1.08V to 3.6V. TCAL IO expanders cannot work with 5V systems. 1.2V, 1.8V, 3.3V logic are fine.

Regards,

Tyler

Interface

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TCA9554A: Alternative parts that has higher operating temperature