“Careful study of CMOS characteristics show that CMOS devices used in a system design can be used for linear building blocks as well as digital blocks.
Utilization of these new devices will decrease package count and reduce supply requirements. The circuit designer now can do both digital and linear designs with the same type of device.”
Application Note July 1973
74-CMOS Inverter Biased for Linear Mode Operation, Some Oscillators, Square wave and One Shot using MM74C04.
From – Fairchild Semiconductor