Docedison:
Before that board is going to work you will have to fix the level shifter Vcc. If the CD4050 is seeing 5V as it's supply it will output 5V.. Not 3V3 as you need for proper operation.
{Edit}
Bob
Oh my.. Hmm.
I saw that sd card module have voltage regulator for 3,3V. It uses AMS1117 and it should provide up to 1A current. Is it possible to use this voltage regulator for supplying 74HC4050? I think in my case this would be the easiest solution, if it could work that way of course.