/diy/ - Do It Yourself

>>2036787
the datasheet provides connection diagrams for 3-input NAND and NOR gates, among others. kinda fun to think about the Apollo Guidance Computer in that context. I figure the 4007 designers were pin-limited as much as anything
>74C04 as an op-amp
just an inverting amp, no operations provided. the inverter in the CD4007, on the right in previous pic, is specifically cited as suitable for a crystal oscillator or amplifier. it is similar to unbuffered versions available now in smaller packages and faster families, 74xxx1GU04, which I keep around for the same general reason

>>2036792
the duals are for high linearity applications
sub-unity overall current transfer ratios from side 1 to side 2 are common in optos