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looking for level shifter chip

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aliyesami

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digikey told me the level shifter does not exist between 3.3v and 5v but ebay is selling such a module , can someone give me this chip name/number?

**broken link removed**

thanks
 

Bingo600

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That looks like a "Phillips I2C" FET levelshifter based board.
I'd suggest to use BSS138 , hve a look @ Adafriut for the schematic , or the Philips I2C AppNote.

But TI (and other) makes some nice IC based ones

/Bingo
 

aliyesami

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That looks like a "Phillips I2C" FET levelshifter based board.
I'd suggest to use BSS138 , hve a look @ Adafriut for the schematic , or the Philips I2C AppNote.

But TI (and other) makes some nice IC based ones

/Bingo

hi Bingo

that doesnt look like a FET in the ebay listing, it looks like some kind of chip.
does anyone know the chip number for TI for such chip, digikey cant find any.
i also want a chip based solution to this .
 

KlausST

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Hi,

I googled for "I2C level shift IC" .

There are a lot of hits. Did you check them?

Klaus
 

bigdogguru

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that doesnt look like a FET in the ebay listing, it looks like some kind of chip.
does anyone know the chip number for TI for such chip, digikey cant find any.
i also want a chip based solution to this .

Why the need for guesswork? The schematic is clearly listed for downloading, I've attached it for convenience below, both as a PDF and posted image:

Logic_Level.JPG

The components in question are clearly listed as BSS138 MOSFETs.

A TI TXB0104 is always a good choice and supports a wider range of voltage levels:

Logic_Levelv2.JPG


BigDog
 

Attachments

  • Logic_Level_Bidirectional[1].pdf
    42.9 KB · Views: 62
  • BSS138.pdf
    121.1 KB · Views: 40
  • TXB0104_breakout.pdf
    32.8 KB · Views: 41
  • txb0104.pdf
    1.3 MB · Views: 36

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