SN74AHC14: ti logo and top marking

Hello,

We source our parts to multiple manufacturing sites. Both of these devices look like they belong to Texas Instruments.
Do you see any behavior that doesn't correspond to the specs on the datasheet?

Thanks!
- Karan

Hi Karan,
The mentioned IC's (SN74AHC14D) are used in the Graphical LCD driver section.The IC which is bought from Digikey is working fine for Graphical LCD character are observed expected,whereas the IC which is bought from Arrow Electronics is not working and the Graphical LCD shows JUNK Character. Waveform level in both the IC's are similar
Hence this question rises whether part received from Arrow Electronics in not Genuine.
Kindly clarify
Thanks & Regards
S.Kumar

Hi S.Kumar,

I am trying to trace down both the IC's for you. Can you please provide me with an image of the shipping label for both the parts?
This way I can trace our shipment and confirm with you what is happening with the Arrow Electronics IC.

Thanks!
- Karan

Arrow Electronics invoice.pdfHi Karan,

Thanks for your reply and support

Kindly find the attached Arrow electronics INVOICE and packing slip. For digikey part we had missed the documents.

Thanks and Regards

S.Kumar

Hello S.Kumar,

I am looking for the TI shipping label that would have been on the shipment. If you can provide me with that I can confirm the validity of the device.

Thanks!
-Karan

Hello Kiran,

Sorry for the delay

Find the attached TI shipment  label details of the part SN74AHC14D

Thanks & Regards

S.Kumar

Hello S.Kumar,

Thank you for the information. Please allow me till the end of the week to find out and get you an answer.

Thanks!
- Karan

Hello S.Kumar,

The parts you have shown in the picture are valid TI parts as confirmed via SAP Mass Trace pull. They are not counterfeit.

Thanks!
-Karan

Hello Karan,

Thanks for your reply
Is the Logo pattern differs from batch to batch?
Due to this logo variation we are suspecting the part whether it is good or counterfeit.

Thanks
S.Kumar

Hi S.Kumar,

Yes, the logo pattern can differ between parts based on what manufacturing site they were created in.

Thanks!
-Karan

Hi S.Kumar,

Is there anything else I can help you with or is there a reason why this issue isn't resolved yet?

Thanks!
-Karan

Dear Karan,
Thanks for your continuous support
We thought that LOGO Pattern of TI will be universe on all manufacturing site based on the package it will vary.
As per your reply it will vary.
Please send me some TI LOGO Pattern for our future reference.

Thanks & Regards
S.Kumar

Hello S.Kumar,

Please read the following app note on marking guidelines www.ti.com/.../cd4050b.pdf
I do not have a list of varying TI LOGO patterns but as long as the general shape is similar, a counterfeit part is highly unlikely.

Thanks!
-Karan

Dear Karan,

Thanks for your clarification. This doubt thread is solved.

Thanks & Regards
S.Kumar