SN74LVC1G14: DPW package operating temperature vs. SN74LVC1G17DPW

David Thiesbrummel

Part Number: SN74LVC1G14
Other Parts Discussed in Thread: SN74LVC1G17,

Hi,

if you look in the datasheets there is the Buffer https://www.ti.com/lit/ds/symlink/sn74lvc1g17.pdf on page 15 with the DPW / X2SON package at max. Op Temp with +125 °C.

And in the Inverter https://www.ti.com/lit/ds/symlink/sn74lvc1g14.pdf on page 15 with the DPW / X2SON package at max. Op Temp with +85 °C

Now, I have the requirement of max. Op Temp at +120 °C and was doing fine with the Buffer (SN74LVC1G17DPW). And I was thinking, if I need a inverting function, I can just switch the device to the SN74LVC1G14DPW because it should be the same.

Well it is for all other packages, but why not for the DPW / X2SON package?

Can any one explain this please? Or is the 85°C a typo in the datasheet?

Kind regards,

David

over 1 year ago

0 David Thiesbrummel over 1 year ago

Prodigy 40 points

Just did an other search and found this thread: https://e2e.ti.com/support/logic-group/logic/f/logic-forum/671483/sn74lvc1g14-operating-temperature-85-or-125

But there, the explanation is not really a clarification, particularly in perspective to the SN74LVC1G17DPW.

And it seems the promised datasheet change did not happen?

0 Albert Xu1 over 1 year ago in reply to David Thiesbrummel

TI__Mastermind 24955 points

Hey David,

I'm not sure why the datasheet wasn't updated, I can look into this. I was not on the team back then.

The answer in that thread is still valid. Some packages went through an extension in the thermal capabilities some did not.

0 David Thiesbrummel over 1 year ago in reply to Albert Xu1

Prodigy 40 points

Hi Albert,

checking the datasheet and the thread again, I think the datasheet got an update.

But maybe/hopefully in the meantime the X2SON package got updated to 125°C and only the SN74LVC1G17 datasheet got the update but not the SN74LVC1G14 datasheet?

+1 Albert Xu1 over 1 year ago in reply to David Thiesbrummel

TI__Mastermind 24955 points

Hi David,

For now you can assume that 125C is the top range of the device. I will try to make this change.

0 David Thiesbrummel over 1 year ago in reply to Albert Xu1

Prodigy 40 points

Hi Albert,

can you let me know when the change happend, please.

Thanks in advance.

0 Albert Xu1 over 1 year ago in reply to David Thiesbrummel

TI__Mastermind 24955 points

Hi David,

This happened Nov 2018.

0 David Thiesbrummel over 1 year ago in reply to Albert Xu1

Prodigy 40 points

Hi Albert,

then I wonder, why is there X2SON still at 85°C?

+1 Albert Xu1 over 1 year ago in reply to David Thiesbrummel

TI__Mastermind 24955 points

Hey David,

I was able to find the PDF markup for the changes that were supposed to be made. Only YZP and YZV were supposed to stay at 85 deg and DPW should be at 125. I believe this was a mistake that was made when updating, I can make a ticket on this issue to get the datasheet changed.

What is interesting is the screenshot you highlighted though. This is data that is pulled automatically that we do not have manual access to. Everywhere that I can see in internal databases states that DPW should be at 125.

I apologize for the confusion, but I can assure you that the max temp should be 125C for all packages except for YZP and YZV. I will work on changing this info and reach out to the people in charge of the auto-populated information.

0 David Thiesbrummel over 1 year ago in reply to Albert Xu1

Prodigy 40 points

Hi Albert,

thank you very much for this confirmation.

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SN74LVC1G14: DPW package operating temperature vs. SN74LVC1G17DPW