SN74AHC125Q: Difference between SN74AHC125Q and SN74AHC125-Q1 Automotive grade

Hi Hiroaki,

These parts are exactly the same, and they will have all the same electrical characteristics. As for why they have different names usually it's because a part number is getting too long so the last Q1 gets cut off. For this one it appears that was the case, but then later we reuploaded it to Ti.com with the Q1 on the end as well.

Regards,

Owen

Hi Hiroaki

Hiroaki Yuyama TED said:

Do the SN74AHC125QPWRQ1, SN74AHC125QPWR, SN74AHC125QPWRG4, SN74AHC125QPWRG4Q1 pass AEC-Q100 qualification have the the same electrical specifications?

Yes that is correct all pass the AEC-Q100 qualification, and have the same electrical characteristics/specs.

Hiroaki Yuyama TED said:

If -Q1 is attached to the SN74AHC125Q, can it be differentiated from the current SN74AHC125QPWRQ1 and SN74AHC125QPWRG4Q1?

No they would then be the exact same device at that point the only difference I could find was the name.

Regards,

Owen

Hi Hiroaki,

Hiroaki Yuyama TED said:

The reason why the part number is different is that the name is cut off if the part number is long, so is it correct to understand that the model name that was released later has -Q1?

To be clear this is my assumption of why they are different. These parts were released way before m time at TI, and I can't find any other reason they would be different.

As I said I cannot find any differences between them other than the part number.

Regards,

Owen 

Hi Hiroaki,

I'm not sure what the cause of the difference is for the mold compound and semiconductor device. That being said it will not affect usage of the device.

As for the MSL rating you can see the differences between the ratings here MSL Ratings and Reflow Profiles. I will look into why they are different, but both are within the AEC-Q100 specification, and if the user is within the MSL rating there should be no problems.

Regards,

Owen