5 open source boards using the 74LS257
Real designs built with the 74LS257, 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.
C64-250407-Replica
bwack
390 × 179.8 mm214 parts2LCERN-OHL-1.2114
MetaphoricV2
OldWer
204.5 × 138 mm140 parts2LCC0-1.05
8088
homebrew8088
132 × 73.9 mm22 parts2LGPL-3.0238
386EX
132 × 73.9 mm19 parts2LGPL-3.0238
80188
143 × 73.9 mm18 parts2LGPL-3.0238
The 74LS257 in open source designs
The gallery holds 5 open source boards using the 74LS257 from 3 GitHub repositories; a typical one measures about 143 × 73.9 mm and carries around 22 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is 8088 by homebrew8088.
What boards using the 74LS257 are built for
74LS257: common questions
Where can I find a 74LS257 reference design?
Each of the 5 boards on this page is a real design using the 74LS257. 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 74LS257?
The median is 143 × 73.9 mm, and 100% are two-layer designs.
What is the most popular open source board using the 74LS257?
By GitHub stars, 8088 by homebrew8088, with 238 stars.
Can I simulate one of these boards using the 74LS257 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.