March 2025
Intermediate to advanced
462 pages
10h 23m
Spanish
Content preview from Libro de cocina de electrónica
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Capítulo 15. Circuitos integrados digitales
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15.0 Introducción
En muchos proyectos, el único circuito integrado digital que necesitarás es un microcontrolador. Con suficientes pines GPIO puedes realizar la mayoría de las tareas digitales. En este capítulo encontrarás recetas para circuitos integrados digitales que siguen teniendo un papel en el diseño de la electrónica moderna.
A veces, un único circuito integrado lógico digital es todo lo que necesitas. Un único circuito integrado lógico digital suele ser más barato y elimina la necesidad de programación que surgiría si utilizaras un microcontrolador.
15.1 Proteger los circuitos integrados del ruido eléctrico
Problema
Quieres utilizar un CI, pero quieres evitar los errores causados por el ruido eléctrico.
Solución
Utiliza un condensador de 100nF lo más cerca posible de las patillas de alimentación del CI digital. Cuanto más cortos sean los cables del condensador, mejor.
Este proceso de conectar un condensador con pistas de cortocircuito a las patillas de alimentación de un CI se denomina "desacoplamiento" porque cada CI tiene su propia pequeña reserva de carga y, por tanto, no se "acoplará" a un condensador vecino afectando a su alimentación. Los condensadores utilizados de este modo también se denominan condensadores de "derivación".
La Figura 15-1 muestra una placa de circuito que contiene un CI digital ...
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