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LM392: Equivalent part with an extended temperature range

Muhammad Naeem74
Prodigy 110 points
Part Number: LM392
Other Parts Discussed in Thread: TLV2302, , LM358, TSM102, TLV7021, TLV9051

Hi,

LM392M (SOIC-8) is rated to work from 0°C to 70 °C, I was wondering if there is an equivalent part with the following temperature rating -40 °C to 85 °C?

Thanks in advance.

  • 0
    TI__Mastermind 49966 points

    Hello Muhammad,

    At one time we did, the LM292A, which is long obsolete. Unfortunately, we do not have a current wider temp rage option or similar pin-out device.

    The closest we have is the TLV2302, but it is micro-power and the comparator and amp positions are reversed.

    The LM392 is basically a combination of a LM358 type op-amp and LM393-type comparator. The cores of these devices can cover up to the full Military temp range. While we cannot guarantee that the LM392 will meet datasheet specifications when outside the 0 to 70 temp range, we would not expect it to fail over the -40 to 85C range. It is up to you if you wish to operate outside the warranted range.

    Are you open to a redesign? We have many newer, smaller, better performing single devices that could easily fit in the same space or less.

  • 0 in reply to Paul Grohe
    Prodigy 110 points

    Hi Paul,

    Are you open to a redesign? We have many newer, smaller, better performing single devices that could easily fit in the same space or less.

    I am open to redesign, please suggest a similar part with a combination of the op-amp and a comparator, thanks

  • 0 in reply to Muhammad Naeem74
    TI__Mastermind 49966 points

    Hello Muhammad,

    The dual op-amp and comparator combos are rather limited. We have not seen a big demand for combo units.

    We do have some combo quads (two comparators and two op-amps and a reference), such as the TSM102.

    We now have lots of tiny singles of comparators and op-amps, such as the TLV9051 op-amp family and TLV7021 family comparators, which would easily fit in the space of the SOIC-8.

    Can you share your schematic or requirements (speed? Supply voltage?) so we can guide you to the best options?

  • 0 in reply to Paul Grohe
    TI__Mastermind 23425 points

    Muhammad

    If you have any additional support needs, feel free to reply or open a new thread.  In the meantime, I will close this thread because there is not anything else we can offer here.  However, we are more than willing to help assess the best options for you if you share your circuit.

    Chuck