SN74ALS245ANSR, SN74LS14NSR, SN74AS280NSR, SN74AS08NSR and SN74AS04NSR - Tjmax and θjc

Hirotaka Matsumoto

Hi all

Would you mind if we ask SN74ALS245ANSR, SN74LS14NSR, SN74AS280NSR, SN74AS08NSR and SN74AS04NSR?

Our customer would like to know Tjmax and θjc of following devices;
We could not find these on the datasheet.
Could you give us the reply?(Could you fill in blanks?)

                                            Tjmax              θjc
-SN74ALS245ANSR
-SN74LS14NSR
-SN74AS280NSR
-SN74AS08NSR
-SN74AS04NSR

Kind regards,

Hirotaka Matsumoto

over 8 years ago

0 Daniel Hartung over 8 years ago

TI__Mastermind 26055 points

Hey Hirotaka,

The Tjmax is generally the same as the Max Storage Temperature. The Max Storage Temperature of the devices is 150 C

The only Θjc I have for you right now is SN74LS14NS is 46.5 C

I put in the requests for the other parts for Θjc and hopefully we will see them in 2 days. I will update you then.

Thanks,
Daniel

0 Hirotaka Matsumoto over 8 years ago in reply to Daniel Hartung

Guru 27585 points

Daniel san

Thank you for your cooperation always!

OK, we are looking forward to the reply of θjc except for SN74LS14NSR.

Kind regards,

Hirotaka Matsumoto

0 Daniel Hartung over 8 years ago in reply to Hirotaka Matsumoto

TI__Mastermind 26055 points

Hey Hirotaka,

These are the Θjcs I have currently:

SN74AS280NS: 43.3 C/W

SN74AS08NS: 48.0 C/W

SN74AS04NS: 46.9 C/W

Unfortunately SN74ALS245NS will take a bit longer than expected. I will get back to you when I have the number

Thanks,

Daniel

0 Hirotaka Matsumoto over 8 years ago in reply to Daniel Hartung

Guru 27585 points

Daniel san

Thank you for your reply!

And we are looking forward to the reply about SN74ALS245NS.

Kind regards,

Hirotaka Matsumoto

0 Daniel Hartung over 8 years ago in reply to Hirotaka Matsumoto

TI__Mastermind 26055 points

Hey Hirotaka,

SN74ALS245NS has a Θjc of 41.0 C/W

Thanks,

Daniel

Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

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SN74ALS245ANSR, SN74LS14NSR, SN74AS280NSR, SN74AS08NSR and SN74AS04NSR - Tjmax and θjc