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SN74LVC1GU04: Operating at -55C with a -40C rated part?

Varinder Singh
Prodigy 10 points
Part Number: SN74LVC1GU04

I was wondering if anyone can give any information with regards on how the operating temperature limits are determined for this part single hex inverter. Data sheet has a -40C to +125C operating range but I would like to use the part down to -55C. I am assuming that the part is quite capable of going down to -55C without any issues but TI probably tests this parts down to -40C so this is how they determine operating range. Does anyone have any inputs in taking this inverter to -55 or perhaps -60C? It has been a while but I do remember from semiconductor physics that silicone becomes more stable as you go lower in temperature. The only issue that I can think of would be the different thermal expansion coefficients of the silicon and the IC packaging which I assume would be well matched by TI.

  • 0
    TI__Genius 16735 points

    Hi,

    We do not guarantee operation of the device below -40C because as you mentioned we only test our parts down to -40C. It may be possible that the device will operate below that range, however since we do not guarantee below -40C we also don't have any appnotes that talk about what happens when you use the device outside the normal temperature range. My guess is that the plastic packaging might also be a big point of failure at lower temperatures.

    Thanks!

    -Karan