4 open source boards using the 74HC123
Real designs built with the 74HC123, 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.
Internal sdcard interface
ifilot
219 × 88 mm77 parts2LNo license3
MegaAV rev0.5
RIP-Felix
50 × 50 mm143 parts4LCERN-OHL-S-2.047
Philips P2000T SD-CARD SLOT2 cartridge
85.1 × 100 mm62 parts4LNo license3
Sdcard prototype
82.6 × 67.3 mm34 parts2LNo license3
The 74HC123 in open source designs
The gallery holds 4 open source boards using the 74HC123 from 2 GitHub repositories; a typical one measures about 83.8 × 77.7 mm and carries around 70 components.
50% are two-layer designs, the rest use four layers or more, and 25% carry an open source license.
The most starred is MegaAV rev0.5 by RIP-Felix.
What boards using the 74HC123 are built for
74HC123: common questions
Where can I find a 74HC123 reference design?
Each of the 4 boards on this page is a real design using the 74HC123. 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 74HC123?
The median is 83.8 × 77.7 mm, and 50% are two-layer designs.
What is the most popular open source board using the 74HC123?
By GitHub stars, MegaAV rev0.5 by RIP-Felix, with 47 stars.
Can I simulate one of these boards using the 74HC123 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.