Puertas CMOS Transistor tipo MOS (Metal-Oxido-Semiconductor) Figura 1: Estructura física de un transistor MOS Figura 2: Sección vertical y símbolo de un transistor NMOS Figura 3: Símbolo de los transistores MOSFET de canal n y p Entrada Q1 Q2 Salida L On Off H H Off On L Figura 4: Inversor CMOS A B Q1 Q2 Q3 Q4 Salida L L On On Off Off H L H On Off Off On H H L Off On On Off H H H Off Off On On L Figura 5: Puerta NAND CMOS A B Q1 Q2 Q3 Q4 Salida Figura 6: Puerta NOR CMOS L L On On Off Off H L H On Off Off On L H L Off On On Off L H H Off Off On On L