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RF430FRL152HEVM: Lower Supply Voltage Vcc on Buffer SN74LVC2G125DCTR

ArTzy
Genius 13999 points
Part Number: RF430FRL152HEVM
Other Parts Discussed in Thread: RF430FRL152H

Hi Experts,

Seeking your assistance on this query:

I am using Texas Instrument NFC Development Tool RF430FRL152HEVM for a project I am working on. The dual bus buffer (SN74LVC2G125DCTR) used in the design has a minimum recommended supply voltage of 1.65V but in the design it is supplied 1.5V. How does this affect the performance of your part? I tried to replace the part with different part number, but I was not able to find an alternate part. Please advise and review the attached file. 

Thank you.

Regards,
Archie A.

RF430FRL152HEVM_searchable_schematic.pdf

  • +1
    TI__Genius 13055 points

    Hello ArTzy,

    I have not seen any issues with this setup before, so it is probably still tolerated by the SN74LVC2G125DCTR. Basically this buffer is used as a level shifter between the 3.3V of the FET and the 1.5V of the RF430FRL152H. So any type, which operates with these voltages should be sufficient.

    Best regards,

    Andreas.