No sorry.. I've only needed to use the circuit you showed for 3v3 to 5v shifting.Astro02 wrote:I have googled a lot, i thinked that you know some chip, thank anyway
Same circuit, but different FET with much lower gate threshold voltage, so it will work at the lower voltages Astro02 required.klricks wrote:Google works for me.
this is the same as https://www.sparkfun.com/products/12009Cancelor wrote:I use these >>> http://www.ebay.co.uk/itm/4-channel-Bi- ... Sw~OdVYXxJ
They are bi-directional and can also converter 2.8V and 1.8V devices.
In your case just connect Vhigh to the RPi 3.3v and Vlow to 2.8v
Cheap as chips, but you will have to wait a long time for delivery from China.