4000-series integrated circuits

The 4000 series is a CMOS logic family of integrated circuits (ICs) first introduced in 1968 by RCA. It was slowly migrated into the 4000B buffered series after about 1975. It had a much wider supply voltage range than any contemporary logic family (3 V to 18 V recommended range for "B" series).

Source: Wikipedia — 4000-series integrated circuits (CC BY-SA 4.0)