TCA9517-Q1: Question about TCA9517-Q1B side Vol

junsong gu

Part Number: TCA9517-Q1
Other Parts Discussed in Thread: TAS5411-Q1

Hello TI fellow,

For TCA9517-Q1, why B side Vol will be raised to about 0.6V? is there any risk for 3.3V I2C interface?

Actually in our application, B side I2C is connected to TI PA TAS5411. is there any pin to pin recommendation?

Forrest Gu

0 Clemens Ladisch 28 days ago

Guru 327240 points

The TAS5411-Q1 datasheet allows up to 1.1 V.

0 Tyler Townsend 27 days ago

Hi Forrest,

The spec that Clemens is referring to is from the TAS5411 datasheet on page 5

Max VIL for SDA is 1.1V.

The output from the TCA9517-Q1 buffer is <0.6V so this meets the spec of the TAS5411.

Regards,

Tyler

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