PCA9535: Difference between PCA9555

Stanley Dai

Part Number: PCA9535
Other Parts Discussed in Thread: PCA9555,

Hi Team,

What's the key spec differences between PCA9535 and PCA9555? I checked the D/S but no findings. Pls help us here. Thanks.

Best,

Stanley.

over 2 years ago

+1 Clemens Ladisch over 2 years ago

Guru 243220 points

Section 8.1 of the PCA9555 datasheet says:

The PCA9555 is identical to the PCA9535, except for the inclusion of the internal I/O pullup resistor, which pulls the I/O to a default high when configured as an input and undriven.

0 Eric Schott1 over 2 years ago in reply to Clemens Ladisch

TI__Mastermind 47895 points

Thanks Clemens!

Hi Stanley,

Let us know if you have any more questions.

Regards,
Eric Schott

Interface

Interface forum

PCA9535: Difference between PCA9555