I knew that this project should be *that* hard...

I ordered 3 TPIC6B595 shift registers from a local electronics house. It turns out that I was shipped 3 74HCT299N shift registers which are of course completely different. So I have to deal with them to get the right product now before I can continue on this project.

I know I should have looked but I trusted that they would be able to ship the product that was ordered when there are such small differences in parts...lesson learned.

Thank you all very much for your time, hopefully once I have the right part I will be able to just plug it in and everything will be working as desired thanks to your help.