SN74AHCT74: SN74AHCT74 vs. SN54AHCT74

Sunset

Genius 13475 points

Part Number: SN74AHCT74
Other Parts Discussed in Thread: SN54AHCT74

Hello Team,

the SN74AHCT74 datasheet which is combined with the SN54AHCT74 does not have a clear info on the SN74AHCT74 timing.

for the timing table below, in the datasheet, can you confirm that the 25C column apply to both SN54 and SN74 parts?
Has the 85C column a typo, and apply to the SN74 instead of SN54?

if the two point are correct, I would request an update for it.

I'm surprised that the SN74 has no clear timing info.

Thanks,

SunSet

over 2 years ago

+1 Sebastian Muriel over 2 years ago

TI__Genius 14210 points

Hi Sunset,

T_A = 25℃ applies to both parts. The SN74 is rated from -40°C to 85°C so this is a typo. Thanks for letting us know, we'll have this reviewed in the next datasheet update.

Regards,

Sebastian

0 Sunset over 2 years ago in reply to Sebastian Muriel

TI__Genius 13475 points

thanks for the follow up.

One additional note, the f_max unit is ns, I'm assuming it should be MHz.

I have seen that the comments I shared apply also to other SNX4AHCTxxx devices.

Regards,

SunSet

0 Sebastian Muriel over 2 years ago in reply to Sunset

TI__Genius 14210 points

Hi Sunset,

Thanks for the heads up. I'll make sure that also gets updated in the next review.

Regards,

Sebastian

Logic

Logic forum

SN74AHCT74: SN74AHCT74 vs. SN54AHCT74