2 open source boards using the 74138D
Real designs built with the 74138D, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
Cbm micropet
fachat
190.2 × 100.3 mm183 parts2LGPL-3.010
Csa ultrabus v2
207.1 × 102.8 mm63 parts2LNo license4
The 74138D in open source designs
The gallery holds 2 open source boards using the 74138D from 2 GitHub repositories; a typical one measures about 198.7 × 101.5 mm and carries around 123 components.
100% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is Cbm micropet by fachat.
What boards using the 74138D are built for
74138D: common questions
Where can I find a 74138D reference design?
Each of the 2 boards on this page is a real design using the 74138D. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
How big is a typical board using the 74138D?
The median is 198.7 × 101.5 mm, and 100% are two-layer designs.
What is the most popular open source board using the 74138D?
By GitHub stars, Cbm micropet by fachat, with 10 stars.
Can I simulate one of these boards using the 74138D before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.