2 open source boards using the 74HC27
Real designs built with the 74HC27, 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.
Cisc-8
nailed-barnacle
299.7 × 198.1 mm315 parts2LMIT1
TSAL
FormulaBartonRacing
87.6 × 58.1 mm53 parts2LNo license1
The 74HC27 in open source designs
The gallery holds 2 open source boards using the 74HC27 from 2 GitHub repositories; a typical one measures about 193.7 × 128.1 mm and carries around 184 components.
100% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is Cisc-8 by nailed-barnacle.
74HC27: common questions
Where can I find a 74HC27 reference design?
Each of the 2 boards on this page is a real design using the 74HC27. 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 74HC27?
The 74HC08, 74HC74 and 74HC86 appear in the most repositories here.
How big is a typical board using the 74HC27?
The median is 193.7 × 128.1 mm, and 100% are two-layer designs.
What is the most popular open source board using the 74HC27?
By GitHub stars, Cisc-8 by nailed-barnacle, with 1 stars.
Can I simulate one of these boards using the 74HC27 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.