The TC74HC4066AF-ELF from Toshiba Semiconductor and Storage is a 4-circuit analog switch Integrated Circuit with 1:1 SPST-NO switching and 80 Ω, in a 14-SOP package.
The TC74HC4066APF from Toshiba Semiconductor and Storage is an analog switch Integrated Circuit with 4 circuits, a 1:1 configuration and an 80 Ω rating, in a 14-DIP package.