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SN75176B: Check fot PCN

Yasuhide Ishikawa
Prodigy 10 points

Part Number: SN75176B

Regarding the SN75176BDR, it seems that the current consumption of the device after PCN is reduced after it is installed at the customer's destination compared to before PCN.Are there any items that will reduce current　consumption with this change?

PCN20210811000_202108131640091055.pdfsn75176b.pdf

  • 0
    Guru 320660 points

    I doubt that TI will publish internal details of this device.

    But what is known is that this is a very old device based on TTL technology. So it is plausible that the state of the art has changed since 1985, and that some changes to the die indeed result in improved efficiency.

  • 0 in reply to Clemens Ladisch
    TI__Guru* 78301 points

    Hi Yasuhide,

    As Clemens has pointed out. The process technology/die for the device has changed, which directly affects electrical parameters such as current consumption. This is pointed out in page 3 of the PCN. You can also see a design change marked on page 3 of the PCN you posted. 

    -Bobby

  • 0 in reply to BOBBY
    Prodigy 10 points

    Thank you for your comments.

    Any way, I'm checking the 2021 and 2013 datasheets, but I can't find an item with reduced current.
    There is no change in Rapid current.
    Will the datasheet not change?
    Since the value of Typ has not changed, please submit the measurement result (actual measurement value)

  • 0 in reply to Yasuhide Ishikawa
    TI__Guru* 78301 points

    Hi Yasuhide,

    For parameters that are 'improved,' datasheet updates are not required since we are lower/better than the spec we call out. We are only required to update typical/max/min values if they are worse after a die change. We often do this to provide more margin since the datasheet is a warranty we provide to the customer. 

    -Bobby