I2C repeater for high level VIL

NAOKI AOYAMA

Guru 11215 points

Other Parts Discussed in Thread: PCA9515B

Hello,

Our customer are using an I2C repeater.

The output low voltage of their slave device is 0.6V. So, the repeater can not detect ACK from salve.

Is it available I2C repeater with VIL is less than 0.6V?

Best Regards,

Naoki Aoyama

over 9 years ago

0 fhoude over 9 years ago

TI__Mastermind 25036 points

Hello Naoki-san,
Which part are you using? Once you give me information about the device I can either recommend an alternative and help with implementation.
-Francis Houde

0 NAOKI AOYAMA over 9 years ago in reply to fhoude

Guru 11215 points

Hello Francis,

Thank you for your reply.
Our customer use the PCA9515B.

Regards,
Naoki Aoyama

0 Kaitlyn Mazzarella over 9 years ago in reply to NAOKI AOYAMA

TI__Prodigy 255 points

Hi Aoyama-san,

Can you provide details on which slave device you are using?

We have a new I2C buffer/translator family in development that will address this common issue by eliminating the static voltage offset. This allows for a VOL spec of ~0.2V, which ensures capability with high level VIL slaves.

Do you have a TI contact that you work with? I can work with that person to send you more detailed information directly via email.

Regards,

Kaitlyn

0 NAOKI AOYAMA over 9 years ago in reply to Kaitlyn Mazzarella

Guru 11215 points

Hi Kaitlyn,

Thank you for your reply.
I will contact TI-Japan.

Thanks,
Naoki Aoyama

Interface

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I2C repeater for high level VIL