SPI Level Translation

Franz Mueller

Other Parts Discussed in Thread: SN74AVC4T774

Hello community,
i have a SPI-Master with 1,8 high-level output voltage and a SPI-Slave with minimal 3,5 high-level input voltage. Can i use the SN74AVC4T774 level translater to connect these two devices?

over 14 years ago

0 Hattie over 14 years ago

TI__Genius 9085 points

Yes, this device is a good choice for that application.

0 Franz Mueller over 14 years ago in reply to Hattie

Prodigy 20 points

I have another question, just to make it clear... Unfortunately my SPI-Slave has at the SO-Pin a 4.5 high level output voltage. Can i use the SN74AVC4T774 with this voltage? I read something like the I/Os are 4.6 volt tolerant...

0 Hattie over 14 years ago in reply to Franz Mueller

TI__Genius 9085 points

Franz,

Sorry I missed this. Yes, the IOs are 4.6V tolerant, so it will be able to handle a 4.5V input without damage.

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SPI Level Translation