6 open source boards using the 74LS155
Real designs built with the 74LS155, 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.
St251n 20603
schlae
137.4 × 199.1 mm277 parts4LNo license38
ISA DualUARTParport
hkzlab
176.5 × 90.2 mm69 parts2LCC-BY-NC-4.018
AVR/ArduinoPCB-Temperature-Controller
MbFredys
90.8 × 56.5 mm68 parts2LCERN-OHL-W-2.05
GSE14
stonedDiscord
163 × 249 mm102 parts2LBSD-2-Clause4
St296n 20741
137.4 × 199.1 mm269 parts4LNo license38
ADV-16 CPU
abzman
228.1 × 172.7 mm111 parts2LUnlicense4
The 74LS155 in open source designs
The gallery holds 6 open source boards using the 74LS155 from 5 GitHub repositories; a typical one measures about 150.2 × 185.9 mm and carries around 107 components.
67% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is St251n 20603 by schlae.
Microcontrollers on boards using the 74LS155
What boards using the 74LS155 are built for
74LS155: common questions
Where can I find a 74LS155 reference design?
Each of the 6 boards on this page is a real design using the 74LS155. 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 74LS155?
The 74LS174, 74LS00, 74LS123, 74LS244 and 74LS245 appear in the most repositories here.
Which microcontrollers do boards using the 74LS155 use?
Most are built on AVR/Arduino (1).
How big is a typical board using the 74LS155?
The median is 150.2 × 185.9 mm, and 67% are two-layer designs.
What is the most popular open source board using the 74LS155?
By GitHub stars, St251n 20603 by schlae, with 38 stars.
Can I simulate one of these boards using the 74LS155 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.