Using 5 NAND Gates to prove that there is a hardware problem was very useful, but for a production run using a single chip to replace these is the next step.
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| Part No | Chip | Manufacture | Speed nS | Package | Price | |||
|---|---|---|---|---|---|---|---|---|
| Min | Typ | Max | ||||||
| 1741279 | SN74LVC1G139DCTR | Ti | <2.5 | SM8 | $ 0.69 | |||
| SN74LVC1G139DCUT | Ti / Farnell | <2.5 | VSSOP | £0.404 | ||||
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Circuit Diagram using 2-to-4 Line Decoder
Updated 317/1011/2016
Building the circuit on a breadboard externally
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Here are the layers printed on A4 sheets. The board is small, zooming in is generally helpful.
To be doneView file