4 open source boards using the 74HC240
Real designs built with the 74HC240, 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.
CPC464-2MINIDDI
Board-Folk
93.4 × 80.2 mm59 parts2LNo license10
MinimalZ80
89Mods
132.6 × 60.5 mm34 parts2LMIT3
Z80-IDE
dennis9819
160 × 100.3 mm62 parts2LNo license2
Z80-SID
160 × 100.3 mm62 parts2LNo license2
The 74HC240 in open source designs
The gallery holds 4 open source boards using the 74HC240 from 3 GitHub repositories; a typical one measures about 146.3 × 90.3 mm and carries around 61 components.
100% are two-layer designs, the rest use four layers or more, and 25% carry an open source license.
The most starred is CPC464-2MINIDDI by Board-Folk.
Parts used alongside the 74HC240
What boards using the 74HC240 are built for
74HC240: common questions
Where can I find a 74HC240 reference design?
Each of the 4 boards on this page is a real design using the 74HC240. 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 74HC240?
The median is 146.3 × 90.3 mm, and 100% are two-layer designs.
What is the most popular open source board using the 74HC240?
By GitHub stars, CPC464-2MINIDDI by Board-Folk, with 10 stars.
Can I simulate one of these boards using the 74HC240 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.