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TCA9406: Maximum operating junction temperature.

Martin Jennings
Prodigy 50 points
Part Number: TCA9406

Hello!

Do you have a maximum operating junction temperature for this device? I do not have estimated power dissipation values for this part yet, and want to set my upper limit based on your direction.

  • 0
    TI__Guru 73221 points

    Hey Martin,

    I2C translators are typically low power devices so there shouldn't be much dissipation across them. Generally we the recommended max junction temperature is +5C of the max recommended ambient so in this case it would be 85C+5C = 90C.

    For an absolute maximum junction temperature. I was able to find simulation data which showed the part was atleast tested at 100C. Looking at another device sharing almost the exact same internal IP (in terms of die), I was able to find that the 'twin brother' of this device has an absolute max junction spec'd at 150C... I can't guarantee the bond wires/leadframe are the same but the dies themselves are comparable and this would suggest 150C may be the absolute max junction.

    -Bobby