Decoder BCD with TTL logic to DEC (1 from 8) not only for antenna switch

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This is simply but powerful decoder from BCD data in TTL logic to one of eight. You can use it everywhere you have less wires than you need and also with BCD (TTL) output devices (like Microham). You need only 4 wires and control up to 8 outputs. There is universal output driver. You can drive outputs by switching to GND or + Vcc voltage. BCD inputs include RF and high voltage protection.

Main functions:

Parameters:

Use:


Matrix table for inputs and outputs:

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Connection of control cables and power supply:


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Output 0 or 8:


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Output driver:


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Example with 6-to-1:


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Example with 4-to-1:


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Example with Microham devices:


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Example with Microham devices:


BCD to DEC with microham

Do you need higher voltage version - compatible with +12V? Continue there:


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Download

BCD TTL to DEC decoder board
Schematic and board pic sch brd
Source files KiCAD8
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View and download the Shield Schematic and PCB files.
The hardware designs are released under the
Attribution-NonCommercial 2.0 Generic