I'm trying to compare between two different parts on Digikey: the SN74HC148N and the SN74HC148AN. Both pages link to the same datasheet, which does not list anything to do with an AN suffix. What is the difference between the N and AN suffix on TI's SN74HCxx parts?

  • \$\begingroup\$ Zero search results on ti.com on SN74HC148AN. I find one scanned Chinese datasheet for SN74HC148A though. \$\endgroup\$
    – winny
    Commented Aug 23, 2023 at 15:17
  • 2
    \$\begingroup\$ TI has excellent support. Ask at TI forums or create an account and ask at TI customer support. In my experience they usually answer within one or two days. \$\endgroup\$
    – Maple
    Commented Aug 23, 2023 at 16:06

1 Answer 1


TI's [FAQ] What is the difference between the SN74HCxx and the SN74HCxxA? says:

Some of these parts were translated into Japanese and renamed to SN74HCxxA. They have their own datasheets with identical specifications to the non-A versions, and are advertised on the TI Japan website. The primary difference between the "A" and non-"A" devices is that the "A" devices have a datasheet in Japanese, and the non-"A" versions do not. There are other minor differences, namely that the "A" versions have not been updated in a very long time (since 1998) and thus are likely out of date. Some non-"A" versions have been temperature extended to support 125C, and their specifications have been adjusted accordingly.

  • \$\begingroup\$ Thanks so much! This was maybe the most directly useful line for my specific needs: "TI recommends using the SN74HCxx version of parts when presented with the choice." \$\endgroup\$
    – ddulaney
    Commented Aug 23, 2023 at 23:09

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