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SN74LS125A: Difference between "NS" and "NSR"

Taito Takemura
Expert 3240 points
Part Number: SN74LS125A

Hi teams,

My customer is concerning about what is the difference between SN74LS125ANS and SN74LS125ANSR. 

I believe that products with an R suffix are tape and reel packaging, and those without R are tube packaging. In addition I think as follows, so I don't think that SN74LS125ANS exists in the first place.

- SN74LS125ANSR (SOP): Packaging is only "Tape and reel", so TI doesn't sell SN74LS125ANS

- SN74LS125AN (PDIP): Packaging is only tube, so  TI doesn't sell SN74LS125ANR

I would appreciate it if you could comment on my interpretation above.

Thank you for your help.

Regards,

Taito Takemura