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SN74LVC1G125 as a level shifter

Roger Plante
Intellectual 1400 points
Other Parts Discussed in Thread: SN74LVC1G125

I would like to use the SN74LVC1G125 as a level shifter with 3.3V supply and 5V inputs. Preliminary testing shows that this does seem to work without problems. Will input clamps turn on and cause latent failures? There is no indication in the spec that tells me if this is possible.

Thanks,
Roger

  • 0
    TI__Intellectual 1400 points

    I learned that there are no problems using the LVC1G125 in this application. The LVC1G125 is designed to tolerate 5.5V at its input regardless of the Vcc voltage.

  • 0
    Prodigy 130 points

    Hi,Roger.

    Regarding this ic, may i know what software you are using for the testing? Is your software available for other same kind ic?

  • 0 in reply to Ken19261
    TI__Intellectual 1400 points

    Hi Ken,

    I am not sure I understand you question...

    Ken said:
    Regarding this ic, may i know what software you are using for the testing? Is your software available for other same kind ic?

    My testing was done using samples of the SN74LVC1G125 wired into a circuit. I used an oscilloscope to monitor the input and output levels and I used my finger to see if the chip was getting hot. For this device and in my application, everything works fine. My only concern was that even though it worked on my bench, I might start seeing failures in production. I have since learned that this is not the case and that the inputs are tolerant up to 5.5V independent of the value of Vcc.

    Roger