BUY HCF4073 https://www.utsource.net/itm/p/30786.html
TRIPLE 3 INPUTAND GATES
Package: SOP-14
Manufacturer: ST
Description: The HCF4073 is a dual 4-input NAND gate with Schmitt-trigger inputs.
Features:
Wide supply voltage range: 3 V to 15 V
Low power consumption
High noise immunity
Schmitt-trigger inputs
Outputs source/sink up to 20 mA
Applications:
Data transmission
Clock/timing generation
Signal conditioning
Pulse generation
Interface circuits
Digital logic systems
(For reference only)