32 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.
Omega-Mainboard
skiselev
333.4 × 149.9 mm248 parts2LGPL-3.0456
Amiga 2000 EATX
jasonsbeer
304.8 × 330.2 mm599 parts4LGPL-3.0198
Isa8 backplane
116.8 × 154.9 mm60 partsGPL-3.0131
Rc2014-ym2149
electrified
100 × 50 mm25 parts2LCERN-OHL-P-2.078
LittleSixteen
SukkoPera
389 × 136.2 mm329 parts2LCustom license76
Mb386sx rc2016
172.7 × 218.4 mm141 parts2LNo license61
Omega-Mainboard
merlinkv
333.4 × 149.9 mm248 parts2LGPL-3.040
TMS9918-9928
polpo
20.3 × 51.1 mm13 parts2LCERN-OHL-P-2.023
Random Jazz Generator
telec16
167.8 × 200.6 mm126 parts2LNo license16
AVR/ArduinoPlayground 68030 Mk I
thorpej
259.9 × 154.9 mm227 parts6LNo license15
Minimax8085-apu ext
100 × 80 mm38 parts2LNo license13
SodaIDE v2 konami case
Danjovic
100 × 65.5 mm30 parts2LCC0-1.011
2FISC
DoctorWkt
214.6 × 123.2 mm73 parts2LGPL-3.010
RC2014 Tandy Sound Card
tebl
99.1 × 49.5 mm32 parts2LGPL-3.09
SoundX
60.8 × 100 mm44 parts2LNo license8
Omega-Mainboard
msx-solis
333.4 × 149.9 mm248 parts2LGPL-3.07
Omega mainboard1.3eu
333.4 × 149.9 mm252 parts2LGPL-3.05
Isa8 backplane
Vakon84
116.8 × 154.9 mm60 partsGPL-3.03
Adcboard
sgs-lab
184 × 80 mm124 parts2LNo license2
TTL 6510 Computer
StefansAI
368.3 × 215.9 mm330 parts2LNo license1
Genesis advanced flash 1-1
MouseBiteLabs
83.8 × 61 mm42 parts2LCC-BY-SA-4.016
SodaIDE v2 patola case
100 × 64.7 mm30 parts2LCC0-1.011
MUTIF09 Single Board Computer
ja1umi
155 × 114 mm68 parts2LMIT10
GPIO
89Mods
209.6 × 108.5 mm113 parts4LMIT2![Top view of IBX ][ HV Board](https://hip.fly.dev/v1/gallery/thumb/sgs-lab--ibxii--hvboard.svg)
IBX ][ HV Board
145 × 80 mm51 parts2LNo license2
TTL 6510 Computer
368.3 × 215.9 mm330 parts2LNo license1
InterruptAndKeyboard
daveho
150 × 90 mm37 partsNo license19
Genesis advanced flash 1-2
83.8 × 61 mm42 parts2LCC-BY-SA-4.016
Soda IDE
100 × 65.5 mm29 parts2LCC0-1.011
Flags
lorenzonotaro
149.4 × 102.8 mm26 parts2LNo license8
Control
209.6 × 108.5 mm81 parts4LMIT2
NQSAP-PCB Flags and Jump Control
TomNisbet
102 × 96 mm29 parts2LMIT18
The 74HCT74 in open source designs
The gallery holds 32 open source boards using the 74HCT74 from 26 GitHub repositories; a typical one measures about 152.5 × 108.5 mm and carries around 64 components.
86% are two-layer designs, the rest use four layers or more, and 63% carry an open source license.
The most starred is Omega-Mainboard by skiselev.
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 32 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, 74HCT157, 74HCT138, 74HCT00 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 152.5 × 108.5 mm, and 86% are two-layer designs.
What is the most popular open source board using the 74HCT74?
By GitHub stars, Omega-Mainboard by skiselev, with 456 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.