3.3V <-> 5V Document

[UncleWobbly]

care to share the link?

It's okay, I found it.

 

[Di'ego]

Hi,

A couple of months ago I saw a PDF document on the Web which described how
to convert 3.3V to 5V (bidirectional). I think it was for I2C applications.
It was a few pages long and I think it used MOSFET's. It may have been a
Philips document. Does anyone know the location of this document? I've
searched in Google with no sucess.

Thanks in advance,

 

[Di'ego]

Hi,

A couple of months ago I saw a PDF document on the Web which described how
to convert 3.3V to 5V (bidirectional). I think it was for I2C applications.
It was a few pages long and I think it used MOSFET's. It may have been a
Philips document. Does anyone know the location of this document? I've
searched in Google with no sucess.

Thanks in advance,

It's okay, I found it.

 

[Di'ego]

care to share the link?

Sure, here it is:

http://www.semiconductors.philips.com/acrobat/applicationnotes/AN97055.pdf

 

[Stepan Novotill]

There is a simpler circuit as well:

http://www.hagtech.com/pdf/iic.pdf

 

[Di'ego]

care to share the link?

been

If you want another document describing the circuit then take a look at
this:

http://www.mbari.org/~lance/N-MOSFET_bidirectional_level_shifter_analysis.pd
f