 There's something special about op-amps. This MC1458 dual op-amp IC, a design from way back in 1971, has the same pin-out as this TS922 dual op-amp from 2001. This is fairly amazing if you're used to dealing with electronics. In fact, most op-amp chips share the same pin-outs, including single, dual, and quad variants from different manufacturers. There are a few outliers, so always check the datasheet. But just imagine how handy it would be if other components had consistent pin-outs. Yeah, I'm looking at you, transistors. Of course, this doesn't affect functional differences between op-amps, such as min, max, supply voltage, rail-to-rail capability, slew rate, input-output impedance. But let's just appreciate the little things, eh?