/members-area/personalblogs/b/ralph-yamamoto-s-blog/posts/signetics-ne564n-pll---brings-back-memoriesI recently saw that Electronic Goldmine is selling new old stock of Signetics NE564N PLL ICs https://www.goldmine-elec-products.com/G25530 . This brought back memories of my early career in electronics working at the University of Hawaii from 19...en-USTelligent Community 12