8 open source boards using the 74HCT74
Real designs built with the 74HCT74, 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.
Amiga 2000 EATX
jasonsbeer
304.8 × 330.2 mm599 parts4LGPL-3.0198
Omega-Mainboard
merlinkv
333.4 × 149.9 mm248 parts2LGPL-3.040
TMS9918-9928
polpo
20.3 × 51.1 mm13 parts2LCERN-OHL-P-2.023
AVR/ArduinoPlayground 68030 Mk I
thorpej
259.9 × 154.9 mm227 parts6LNo license15
TTL 6510 Computer
StefansAI
368.3 × 215.9 mm330 parts2LNo license1
GPIO
89Mods
209.6 × 108.5 mm113 parts4LMIT2
TTL 6510 Computer
368.3 × 215.9 mm330 parts2LNo license1
Control
209.6 × 108.5 mm81 parts4LMIT2
The 74HCT74 in open source designs
The gallery holds 8 open source boards using the 74HCT74 from 6 GitHub repositories; a typical one measures about 282.4 × 152.4 mm and carries around 238 components.
50% are two-layer designs, the rest use four layers or more, and 63% carry an open source license.
The most starred is Amiga 2000 EATX by jasonsbeer.
Parts used alongside the 74HCT74
Microcontrollers on boards using the 74HCT74
What boards using the 74HCT74 are built for
74HCT74: common questions
Where can I find a 74HCT74 reference design?
Each of the 8 boards on this page is a real design using the 74HCT74. 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 74HCT74?
The 74HCT04, 74HCT00, 74HCT08, 74HCT157 and 74HCT32 appear in the most repositories here.
Which microcontrollers do boards using the 74HCT74 use?
Most are built on AVR/Arduino (1).
How big is a typical board using the 74HCT74?
The median is 282.4 × 152.4 mm, and 50% are two-layer designs.
What is the most popular open source board using the 74HCT74?
By GitHub stars, Amiga 2000 EATX by jasonsbeer, with 198 stars.
Can I simulate one of these boards using the 74HCT74 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.