The CD4069 is made up of six inverter circuits and is made with complementary MOS (CMOS) technology to produce a wide operating range, low power consumption, good noise immunity, and symmetric controlled rise and fall timings.
This device is designed for all general-purpose inverter applications that do not require the specific features of the MM74C901, MM74C907, or CD4049A Hex Inverter/Buffers. The MM74C14 or MM74C914 Hex Schmitt Trigger is recommended for situations requiring higher noise immunity.
More details:https://www.utmel.com/components/cd4069-inverter-cmos-pinout-datasheet-pdf-and-circuit?id=941