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SN74LV1T34: Single level shifter device's comparison

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Replies: 4

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Part Number: SN74LV1T34

Hi Team,

Could you tell me the differences among following 4 single level shifters?\

SN74LV1T34
SN74LV1T126
SN74LV1T125
SN74LV1T04

Regards,

Takashi Onawa

  • Hi Takshi-san,

    All these devices are single channel unidirectional single supply level shifters from the LV1T family which supports translation from 1.65V to 5.5V.

    1T34 is a buffer

    1T126/125 is buffer with tristate output.

    1T04 is an inverter.

    Please let us know your application use case to suggest any other level shifters.

    Let me know if you need anything else.

    -Thanks,

    Shreyas

  • In reply to ShreyasRao:

    Hi Shreyas-san,

    Thanks for your quick reply on this!

    Sorry, I have two additional questions.
    1. What is the difference between 1T125 and 1T126?
    2. Is it OK to connect Pull-down resister on output side for initial logic? If yes, how large is acceptable?

    Regards,
    Takashi Onawa
  • In reply to Takashi Onawa:

    Hi Takashi san,

    The 1T125 has active low OE pin and 1T126 has active high OE pin.
    It is ok to connect an external pulldown resistor on the output. The sizing of the resistors needs to be such that the device could easily overcome it once it is active. Usually, a 10k pulldown should be good.

    -Thanks,

    Shreyas

  • In reply to ShreyasRao:

    Hi Shreyas-san,

    Thanks! I understood.

    Regards,
    Takashi Onawa

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