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AM26LV32E: Replacement from DS26LV32AT

Taketo Sato
Genius 10325 points
Part Number: AM26LV32E

Hello team,

Regarding common mode input voltage rating, +/-14V is specified as abs max rating in DS26LV32AT. There is no abs max rating for common mode input voltage specified for AM26LV32E but there is recommended range with +/- 7V.

Can I think these two devices have equivalent level each other for common mode input voltage rating?

Best regards,

  • 0
    Guru 316780 points

    The absolute maximum ratings are identical.

    The common-mode input voltage is defined as the average of the two inputs. So when the two inputs have inidividual limits of ±14 V, the average also must not be larger than ±14 V. Specifying a common-mode limit would make sense only if it were different from the inidividual limit.

  • 0
    TI__Guru 52182 points

    Hi Sato-san,

    They are identical with respect to the abs max ratings - for the reasons that Clemens mentioned.

    That being said - you really should try to keep the common mode voltage between +/-7V (this is RS-422 standard level - and also where our device is specified at) so while the pins can handle a higher voltage - the device may produce unexpected behavior as its not characterized beyond the +/-7V range - the pins are just tolerant to +/-14V without damage. 

    Please let me know if there are any other questions that I can help you with!

    Best,

    Parker Dodson