demux

Thomas
Thomas AC
• Created on Apr 5, 2025 • 0 • 0 • 2
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demux
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Integrated Circuits Used

74LS138 74LS20

Procedure

  1. Connect Pin-4 (Input) of ICBase-1 (74LS138) to GND Port.
  2. Connect Pin-5 (Input) of ICBase-1 (74LS138) to GND Port.
  3. Connect Pin-6 (Input) of ICBase-1 (74LS138) to VCC Port.
  4. Connect Pin-20 (VCC) of ICBase-1 (74LS138) to VCC Port.
  5. Connect Pin-8 (Ground) of ICBase-1 (74LS138) to GND Port.
  6. Connect Pin-1 (Input) of ICBase-1 (74LS138) to Input-15.
  7. Connect Pin-2 (Input) of ICBase-1 (74LS138) to Input-14.
  8. Connect Pin-3 (Input) of ICBase-1 (74LS138) to Input-13.
  9. Connect Pin-7 (Ground) of ICBase-2 (74LS20) to GND Port.
  10. Connect Pin-7 (Input & Output) of ICBase-3 to GND Port.
  11. Add IC 74LS138 into ICBase-1 (74LS138).
  12. Connect Pin-20 (VCC) of ICBase-2 (74LS20) to VCC Port.
  13. Connect Pin-1 (Input) of ICBase-2 (74LS20) to ICBase-1 (74LS138).
  14. Add IC 74LS20 into ICBase-2 (74LS20).
  15. Connect Pin-1 (Input) of ICBase-2 (74LS20) to Pin-18 (Output) of ICBase-1 (74LS138).
  16. Connect Pin-2 (Input) of ICBase-2 (74LS20) to Pin-17 (Output) of ICBase-1 (74LS138).
  17. Connect Pin-4 (Input) of ICBase-2 (74LS20) to Pin-15 (Output) of ICBase-1 (74LS138).
  18. Connect Output-8 to Pin-6 (Output) of ICBase-2 (74LS20).
  19. Connect Pin-5 (Input) of ICBase-2 (74LS20) to Pin-7 (Output) of ICBase-1 (74LS138).