17 open source boards using the 74HCT157
Real designs built with the 74HCT157, 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
AVR/Arduino8bit computer
vascofazza
297.2 × 180.3 mm327 parts2LMIT314
Amiga 2000 EATX
jasonsbeer
304.8 × 330.2 mm599 parts4LGPL-3.0198
Omega-Mainboard
merlinkv
333.4 × 149.9 mm248 parts2LGPL-3.040
Random Jazz Generator
telec16
167.8 × 200.6 mm126 parts2LNo license16
AVR/ArduinoEmurom
jtsiomb
90.6 × 77.8 mm48 parts2LCC-BY-SA-4.015
Omega-Mainboard
msx-solis
333.4 × 149.9 mm248 parts2LGPL-3.07
Arc module
andrew-bolin
100 × 85 mm85 parts2LNo license6
Omega mainboard1.3eu
333.4 × 149.9 mm252 parts2LGPL-3.05
Pcie pi module
100 × 68.9 mm15 parts2LNo license6
Xy register
TomNisbet
102 × 96 mm60 parts2LMIT18
Registers
89Mods
209.6 × 108.5 mm98 parts4LMIT2
Commodore VIC-20 8KB RAM Expansion
BrettHallen
62.9 × 61.6 mm15 parts2LNo license4
ALU
209.6 × 108 mm82 parts4LMIT2
Control
209.6 × 108.5 mm81 parts4LMIT2
Memory
209.6 × 108.5 mm58 parts4LMIT2
NQSAP-PCB Flags and Jump Control
102 × 96 mm29 parts2LMIT18
The 74HCT157 in open source designs
The gallery holds 17 open source boards using the 74HCT157 from 12 GitHub repositories; a typical one measures about 209.6 × 108.5 mm and carries around 85 components.
71% are two-layer designs, the rest use four layers or more, and 76% carry an open source license.
The most starred is Omega-Mainboard by skiselev.
Parts used alongside the 74HCT157
Microcontrollers on boards using the 74HCT157
What boards using the 74HCT157 are built for
74HCT157: common questions
Where can I find a 74HCT157 reference design?
Each of the 17 boards on this page is a real design using the 74HCT157. 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 74HCT157?
The 74HCT04, 74HCT74, 74HCT153, 74HCT273 and 74HCT30 appear in the most repositories here.
Which microcontrollers do boards using the 74HCT157 use?
Most are built on AVR/Arduino (2).
How big is a typical board using the 74HCT157?
The median is 209.6 × 108.5 mm, and 71% are two-layer designs.
What is the most popular open source board using the 74HCT157?
By GitHub stars, Omega-Mainboard by skiselev, with 456 stars.
Can I simulate one of these boards using the 74HCT157 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.