CD4093 (CMOS Quad 2-Input NAND Schmitt Triggers)

From the shop's description

CD4093 (CMOS Quad 2-Input NAND Schmitt Triggers) is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. CD4093 (CMOS Quad 2-Input NAND Schmitt Triggers) It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.