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SN74AVC8T245: ψJT Junction-to-top characterization parameter

Part Number: SN74AVC8T245

Dear, Support Team.

Datasheet changes from Revision J (March 2017) to Revision K (November 2023) and Updated the Thermal Information table for all packages.
Junction-to-top characterization parameter "ψJT" of 24Pin PW package has been changed from 1.5℃/W to 93.1℃/W.
The changed values are too large.
Has this calculation formula changed?

SN74AVC8T245 Junction-to-top characterization parameter.xlsx

Best Regards,
Hiroaki Yuyama