Circuito con 74LS138

flux

Aquí tienes un ejemplo de esquema en forma de diagrama textual que puedes reproducir en tu proyecto:
                       +Vcc
                        │
                   [ R_pullup ]
                        │
                        ├───── Nodo Común (Salida combinada a Display)
                        │
              ┌─────────┴─────────┐
             │         ...         │
            D1                  D8
             │                   │
          [74LS138] (Salidas Y0..Y7)
             │
         Salidas Y0, Y1, ..., Y7
Detalles de conexión:
  • Cada salida (Y0 a Y7) del 74LS138 se conecta al ánodo de un diodo individual (por ejemplo, 1N4148).
  • Los cátodos de los diodos se unen en un nodo común.
  • Desde el nodo común, se conecta una resistencia pull‑up a Vcc (por ejemplo, 10 kΩ) para mantener la tensión alta cuando todas las salidas estén en estado inactivo (alto).
  • La señal resultante del nodo común se dirige hacia el display de 7 segmentos. Ten en cuenta que, al ser salidas activas bajas, el nodo irá a bajo (0 V) cuando alguna salida esté activa, lo que puede requerir una adaptación de lógica para encender o apagar el display correctamente.
Puedes reproducir esta idea en el esquema de Flux usando las herramientas gráficas de conexión para colocar los diodos, resistencia y vincularlas con el circuito del display. ¿Necesitas más detalles sobre algún componente o aclarar alguna conexión?
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Prepared Violet TV Glasses

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