TCA9617A: Usage setup

Koji Ikeda

Part Number: TCA9617A

Hello support team,

My customer asks if TCA9617A can accept I2C master on side B and slave on side A, could you confirm? They use VCCA < VCCB. All figure on datasheet shows master on side A, they would like to confirm.

Thanks,

Koji Ikeda

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 322410 points

Yes. I²C is bidirectional; on the electrical level, there is no difference between masters and slaves.

+1 Tyler Townsend over 2 years ago

TI__Guru 60048 points

Hi Koji,

I agree with Clemens here. I2C is a bidirectional protocol. Master device can be present on side B or side A. Slave device can be present on side B or side A. Voltage levels for VCCA and VCCB need to be respected as listed in the recommended operating conditions found in the datasheet regardless of the master/slave position.

Regards,

Tyler

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TCA9617A: Usage setup