Hello List.
Just some exemplifications I found for the (CMOS) 555.
http://www.righto.com/2016/02/555-timer-teardown-inside-worlds-most.html http://www.righto.com/2016/04/teardown-of-cmos-555-timer-chip-how.html https://zeptobars.com/en/read/NXP-7555-555-timer
Happy Reading! Hagen.