Comment by bragr
15 days ago
If you look closely at the bottom one, almost all the components are slightly askew, while the top one has everything at neat 90 degrees. And a smaller IC almost always means the more modern/expensive IC. Same for the other components. In fact, the top one has a much higher component count, the small components just don't show up well (look at the pads though).
Also look at the number unused/unconnected pins on the chip. The fake seems to be using a generic chip programed to act like the real thing. The extra pins are for functions it doesnt need in this use case. A professional-grade product will use a carefully-selected chip with no extra capabilities or unused pins.