242 Demultiplexor NAND

242 : Demultiplexor NAND

Design render
  • Author: Mauricio Caballero Hernández - Alejandro Duran Morales - Marvin Yahir Salamanca Ramirez - Kevin Ortiz Sarate
  • Description: Demultiplexor de 3 entradas independientes y 3 entradas de dirección que arrojan valore logicos de 0 y 1 en 8 salidas diferentes, constituido por compuertas NAND y NOT, imitando el comportamiento de un LS138
  • GitHub repository
  • View in Wokwi
  • Clock: 0 Hz

How it works

Introduciendo un total de 6 señales en el circuito se puede arrojar una señal negada (un valor de 0 logico) en una de las 8 salidas disponibles. Las primeras 3 entradas dentro del circuito son clasificadas como entradas de dirección y se encargan de configurar el Demultiplexor, los otros 3 puertos de entrada admiten valores de entrada independientes que terminan por infliur en las entradas de las compuertas logicas NAND y eso enconjunto permite que se arrojen valores logicos, predominando los estados altosen 7 de 8 salidas, mientras que la salida restante arroja un valor logico de 0 (lo cual admite un total de 8 combinaciones posibles con resultados diferentes). Todo el cuerpo del Demultiplexor esta conformado por compuertas NAND de 4 entradas y su demanda de compuertas NOT es minima en comparacion.

How to test

Para probar el circuito es necesario utilizar un dip switch de 6 entradas donde las primeras 3 posiciones conformaran las entradas de dirección (E0-E2) mientras que las posiciones 4 a 6 seran las entradas independientes (A0-A2). En su estado natural, (sin señales de entrada más que la E0), se arrojara el estado bajo a O0, Para arrojar un valor de 0 a la salida O1 es necesario mantener activa la entrada de direccion E0 y la entrada independiente A0. Para cambiar a la salida O2 se mantiene la entrada de dirección E0 y la entrada A1. Para cambiar a la salida O3 se mantiene la entrada de dirección E0 y la entrada A0 + A1. Para cambiar a la salida O4 se mantiene la entrada de dirección E0 y la entrada A2. Para cambiar a la salida O5 se mantiene la entrada de dirección E0 y la entrada A0 + A2. Para cambiar a la salida O6 se mantiene la entrada de dirección E0 y la entrada A1 + A2. Para cambiar a la salida O7 se mantiene la entrada de dirección E0 y la entrada A0 + A1 + A2. Para que todas las salidas arrojen un valor logico de 1 se necesita que se activen las entradas E1 + E2.

IO

#InputOutputBidirectional
0E0 (Entrada de dirección)segment a
1E1 (Entrada de dirección)segment b
2E2 (Entrada de dirección)segment c
3A0 (Entrada independiente)segment d
4A1 (Entrada independiente)segment e
5A2 (Entrada independiente)segment f
6segment g
7dot

Chip location

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Telluride 2023) tt_um_kpwebb_adder (rusty_adder) Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available 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