Introduction With the release of KiCAD 5, KiCAD supports circuit simulation [http://kicad-pcb.org/blog/2018/07/KiCad-5-a-new-generation/] within eeschema using ngspice. 74HC00 The 74HC00 is a quad 2-input NAND gate. KiCAD splits the IC into five discrete components: four individual gates (Units A-D) and one power unit (Unit E)