4000-series integrated circuits

The 4000 series is a CMOS logic family of integrated circuits (ICs) first introduced in 1968 by RCA.^[1] It was slowly migrated into the 4000B buffered series after about 1975.^[2] It had a much wider supply voltage range than any contemporary logic family (3V to 18V recommended range for "B" series). Almost all IC manufacturers active during this initial era fabricated models for this series. Its naming convention is still in use today.

^ "1963: Complementary MOS Circuit Configuration is Invented". Computer History Museum. Archived from the original on July 23, 2019.
^ Marston, Ray (October 2006). "Understanding Digital Logic ICs - Part 4". Nuts and Volts. Archived from the original on November 1, 2016.

[CH_CMOS-1] "1963: Complementary MOS Circuit Configuration is Invented". Computer History Museum. Archived from the original on July 23, 2019.

[2] Marston, Ray (October 2006). "Understanding Digital Logic ICs - Part 4". Nuts and Volts. Archived from the original on November 1, 2016.

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