7 open source boards using the 74HC4040
Real designs built with the 74HC4040, 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.
Jupiter-II
ricaflops
164.5 × 89.5 mm122 partsMIT43
8 16 computer 2
halfburnttoast
208 × 110 mm111 parts2LNo license21
LIA
JasMoH
290.9 × 87.4 mm295 parts2LGPL-3.05
Pll test
71.9 × 17.5 mm81 parts2LGPL-3.05
Pico vdu
zuiko21
97.8 × 72.4 mm43 parts2LMIT23
8 16 computer 2 serial card
48 × 94 mm14 parts2LNo license21
Vdu sv
106.7 × 83.8 mm35 parts2LMIT23
The 74HC4040 in open source designs
The gallery holds 7 open source boards using the 74HC4040 from 4 GitHub repositories; a typical one measures about 106.7 × 87.4 mm and carries around 81 components.
100% are two-layer designs, the rest use four layers or more, and 71% carry an open source license.
The most starred is Jupiter-II by ricaflops.
What boards using the 74HC4040 are built for
74HC4040: common questions
Where can I find a 74HC4040 reference design?
Each of the 7 boards on this page is a real design using the 74HC4040. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the 74HC4040?
The 74HC138, 74HC14, 74HC157, 74HC245 and 74HC574 appear in the most repositories here.
How big is a typical board using the 74HC4040?
The median is 106.7 × 87.4 mm, and 100% are two-layer designs.
What is the most popular open source board using the 74HC4040?
By GitHub stars, Jupiter-II by ricaflops, with 43 stars.
Can I simulate one of these boards using the 74HC4040 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.