I wonder about the "Bar" marking on the left of the chip as opposed to the "Dot" adjacent to Pin 1. All the Ti and BB chip I have (Mouser and Digikey) have the dot.
The fake parts are typically lower quality, lower cost parts that have the same pinout and operational characteristics. They use slave labor to wipe the original P/Ns from the components and restamp them with semi-official looking corporate logos and top quality P/Ns.
Don't ask me how I know this...
We have a Doctor in the house!
I completed all the requirements for a PhD in Organizational Management, but the Thesis faculty member did not like my draft thesis (A Contrast and Comparative Analysis of Policy and Manpower Management Across Fifty Recreational Marinas Along the Western Coast of...
Here is a picture of the PL20 control Board.
Here is a picture of the PL20A control board. Minor layout differences and a few more capacitors on the PL20A.
Perry, I like how you wrapped the wires around the center posts of the RCA Jacks. It makes for better alignment than stuffing the wire inside the center post.