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PCA9306: Regarding reason for datasheet change

Daisuke Higa
Genius 4575 points

Part Number: PCA9306
Other Parts Discussed in Thread: LSF0102

Hi support team

My customer asked us regarding the reason for datasheet change below.

Are these spec changes due to process changes?
Or are there other reasons?
My customer continues to use the device and is concerned that the specs are worse than before.

Best regards,

Higa

  • 0
    TI__Guru 53535 points

    Hi Higa-san,

    These specification changes were a part of t PCN for this device that updated it to a newer process technology. The increase in AC specifications should not impact any application that uses this device for I2C communication. If you are using this device for another purpose, let us know and we can share more information on the change (for I2C applications this data isn't useful).

    Regards, 
    Eric Schott 

  • 0 in reply to Eric Schott1
    Genius 4575 points

    Hi Eric-san

    Why don't these values apply for I2C?
    Also, what values should we apply if we are using for I2C communication?

    Best regards,

    Higa

  • 0 in reply to Daisuke Higa
    Guru 320660 points

    The PCA9306 is based on the LSF0102, which support many MHz. But 400 kHz I²C has a pulse width of more than 1 µs, so nanosecond differences simply do not matter.

  • 0 in reply to Clemens Ladisch
    Genius 4575 points

    Hi Ladisch-san

    Thank you for answering.

    Eric-san

    My customer are using for the another (not I2C) communication.

    Could you provide more detail information on the change?

    Best regards,

    Higa 

  • 0 in reply to Daisuke Higa
    TI__Guru 56688 points

    Higa,

    These changes seem to update the AC electrical characteristics, specially the switching performance during translation. 

    The datasheet change now shows the specific package type such as YZT or DCT for example. Based on the package type, the tPHL changes slightly. Since this is in the nanosecond range, you are unlikely to notice these changes especially for I2C since most common operating speeds are 100 kHz, 400kHz, and 1 MHz (rare). 

    May I ask what this device is being used for if it is not for an I2C application? If the customer is using the device for higher data rates than I just described, then the nanosecond changes may be more impactful.

    Regards,

    Tyler