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SN54HC273-SP: Radiation tolerance data?

Jewel Holt
Prodigy 60 points
Part Number: SN54HC273-SP

Hi,

The datasheet specifies a radiation tolerance that's qualified for space, but can you explain or direct me to an explanation that covers the qualification process of such space grade equipment and if radiation tolerant is equivalent to radiation hardened?

Much Thanks,

Jewel

  • 0
    TI__Guru* 97046 points

    Hi Jewel,

    For devices that have a specific radiation tolerance, they will include that information on the front page of the datasheet. Radiation tolerant does not mean radiation hardened.

    Historically, many space rated logic parts were built with hermitically sealed packaging but were tested by the end customer as part of their system rather than by the manufacturer. Today we do test new space rated parts, but there are very few in the logic portfolio - not including the HC273.

  • 0 in reply to Emrys Maier
    Prodigy 60 points

    Hi Emrys Maier,

    Thank you for your swift response. This may be a little off topic, but based off of your current test procedures does radiation hardened typically have a higher rad tolerance and a more rigorous qualification process? 

  • +1 in reply to Jewel Holt
    TI__Guru* 97046 points

    Hey Jewel,

    Since the products I support don't have many radiation hardened options, I couldn't say for sure (I support about 20,000 products in Logic, with only 6 of those having radiation ratings). I believe 'radiation hardened' would mean devices with designs specifically for radiation, while 'radiation tolerant' parts fall more into the category of those that weren't specifically designed for space, but do tolerate a small amount of radiation.

    We have some documentation available on the topic that may help to clarify:

    Space Products Guide 

    Understanding Quality Levels for HiRel-rated Components 

  • 0 in reply to Emrys Maier
    Prodigy 60 points

    Hi Emrys,

    Thank you for the additional clarification!