Electronics > Beginners
TTL level converter - 1.5V to 5V
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Cj1:
https://www.sparkfun.com/products/12009

I have 2 1.5V signals that i want to convert to 5V signals (VGA H/V sync). Would this board work for that purpose? I was going to use this circuit: https://imgur.com/a/DJPT0Lw but would rather not build it if i don't have to.
sleemanj:
Unlikely to function, 1.5v is too low with regard the FET gate threshold.
exe:
It might need swapping fets with those that work from 1.5V. I'd ask them what fets are used (hopefully they know). Or may be they can even check this for you... Although, there should be some headroom because parameters may drift with temperature and age.
DuPe:
hi folks,
i dont see any fet's in the imgur circuit, so why it should not work in principle?
only issue might be, that first transistor might go into saturation so speed can be too low for H-sync signals
sleemanj:

--- Quote from: DuPe on June 24, 2018, 09:22:53 am ---hi folks,
i dont see any fet's in the imgur circuit, so why it should not work in principle?
only issue might be, that first transistor might go into saturation so speed can be too low for H-sync signals

--- End quote ---

The poster is asking about the sparkfun board, which uses fets to accomplish the shift.  The specs are on the sparkfun page.
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