TL074: TL074CDR oOutput differences by manufacturing date

Hi Kevin, 

There was a PCN sent out for the Fab/design change regarding the TL074. The new die is the TL074H.  It has improved output swing to the supply rail as seen below. For this reason you will see an increase in the linear operating range of the output stage with this improvement. Until the old stock of the TL074 runs out it is possible to receive TL074 with the old die or the new die. To ensure you only receive the new die for consistency you may order the TL074H variant. The old die is no longer in production. 

Here is a snippet from the PCN:

Texas_Instruments_PCN20221219006_20221221091103261.pdf

Best Regards, 
Chris Featherstone