Voltage level shifter recommendations?

[patrickm]

Hi,

I would like to connect my vic20 to a 3.3v microcontroller. Any suggestions on level shifter ICs to bidirectionally convert between 3.3v and 5v?

Thanks!
Patrick

[Mike]

It would be helpful if you told people what type of microcontroller you intend to use with your project. If its I/O pins are 5V tolerant, you wouldn't need to use any level shifters.

[MCes]

An example....
https://www.ti.com/product/SN74CBTD3384#tech-docs

page 5 into http://focus.ti.com/pdfs/logic/bswitchprodbull.pdf

you need the CBTD version...

This "analog switch" does not buffer the I/O, but it does not need to be declared the signals direction and the High Z state.....
they are ANALOGICALLY transparent!

[patrickm]

Hi Mike. Sorry for not providing more details. I was hoping to connect a raspberry pi pico. While the board can take 5v power, the i/o is 3.3v and official documentation claims it isn't 5v tolerant.


Thanks MCes. That's an interesting solution. I did not realize that such ICs existed.


Patrick

[beamrider]

wouldn't something like this be perfect?

https://www.ebay.co.uk/itm/383357076123 ... %3A2334524

[JonBrawn]

Or these if you're based in the US:

https://www.mouser.com/ProductDetail/Sp ... uoQAvD_BwE

[chysn]

Or these if you're based in the US:

https://www.mouser.com/ProductDetail/Sp ... uoQAvD_BwE

Yes, but except don't pay three bucks each for them. These are $7 for 10:

https://www.amazon.com/KeeYees-Channels ... 07LG646VS/