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SN74HCT273: Change of data sheet specifications (thermal information)

Ryu Yamashita
Genius 3625 points
Part Number: SN74HCT273

Hi team,

The temperature information on the SN74HCT273NS appears to have changed significantly from RevF to RevG in the datasheet.
Is this a change due to the manufacturing process?
Or is it due to the contents of the test?
I would like to know in order to understand the exact extent of the impact.

Sincerely.
Ryu

  • 0
    TI__Genius 12841 points

    Hi Ryu,

    During a routine datasheet update, this device’s thermal values (RΘJA, RΘJC(top), RΘJC(bot), RΘJB, ψJT, ψJB), as described in the Thermal Information Table, were updated to be more accurate.  TI now uses an improved thermal model to calculate thermal impedance values, and these new thermal values may differ slightly from the existing values in the datasheet.  The materials used, manufacturing process, and device core have not changed, so electrical performance will remain the same.  Only the thermal characteristics of the datasheet have been updated.

    Regards

    Owen