Hans was famous for designing the 555 timer but he did a bunch more (google him). I met him when he had a company called Interdesign making semi-custom ICs. The company I was a technician for in the early 70s used his company/process to reduce a larger complex circuit to a modest number of ICs. Only 3 or 4 "monochips" (what they called their semi-custom ICs), replaced a PCB full of jelly bean ICs and discrete parts.scott2000 said:Updated a couple links to PDFs
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=2ahUKEwiBlpT-ltfeAhVJOq0KHeCUC3QQFjABegQIDBAC&url=https%3A%2F%2Fwww.diodes.com%2Fassets%2FSemicustom-Devices%2F7MANUAL.pdf&usg=AOvVaw06MW9JPOQxFS2-_griEeGd
http://www.designinganalogchips.com/_count/designinganalogchips.pdf
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