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SN74HC244: Datasheet Thermal Resistance Value increased from Revision E to Revision F

Part Number: SN74HC244

Dear Specialists,

My customer is using SN74HC244 and has a question.

I would be grateful if you could advise.

According to the Datasheet, thermal resistance is increased Revision E to Revision F.

Could it possible to think the process of obtaining thermals has improved, the thermal performance for this device is the same, not improved.

I appreciate your great help in advance.

Best regards,


  • Hi Shinichi,

    That is correct all electrical characteristics, materials, and manufacturing are the same. It is simply that TI now uses an improved thermal model that more accurately calculates thermal impedance values.



  • Hi Owen,

    Thank you for your reply.

    I understand SN74HC244 has no changes in electrical characteristics, materials, or processes, only the thermal model has been changed.

    I’ll share this information with the customer. 

    I appreciate your great help and cooperation.

    Best regards,