One of the minor hurdles that I have to deal with is how to connect the output from the amiga video, which is 5v to the FPGA at 3.3v.
I was originally going to do a custom circuit board but that has turned into a pain in the butt, and there’s simply too much work involved for me to want to mess with it. Maybe I’ll do a custom PCB as phase II or something.
Anyways, I ordered the SN74CBTD3384CDBQR – 10-Bit FET Bus Switches With Level Shifting with -2 V Undershoot IC to convert between the two voltages.
An application note at TI explains how it works.
But these damn chips can’t be sampled in DIP. I ordered some QSOP-24 packages, and then some surfboards.
I ordered the surfboard like things which convert to QSOP to DIP. The only ones I could find that had great datasheets on it was this:
They were somewhat expensive. Almost $10 each shipped, but I’ve got to get moving on the project, and this is currently holding me up.
I’ve never soldered SMT with a small pitch (0.635″, 25 mil), so this is going to be a challenge. I have to order some flux, a loupe, and I eventually want to get a magnifier with light…..