4 open source boards using the 74LS253
Real designs built with the 74LS253, 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.
Microdigital - TK 2000
clemarfolly
236.8 × 169.8 mm195 parts2LNo license17
ALUModule
crempp
177 × 121.9 mm168 parts2LNo license4- schematic only · 278 parts
ARCADE
antongale
278 parts2LNo license3 
Esh
RulecityLLC
299.7 × 229.9 mm182 parts2LBSD-3-Clause1
The 74LS253 in open source designs
The gallery holds 4 open source boards using the 74LS253 from 4 GitHub repositories; a typical one measures about 236.8 × 169.8 mm and carries around 189 components.
100% are two-layer designs, the rest use four layers or more, and 25% carry an open source license.
The most starred is Microdigital - TK 2000 by clemarfolly.
74LS253: common questions
Where can I find a 74LS253 reference design?
Each of the 4 boards on this page is a real design using the 74LS253. 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 74LS253?
The 74LS08, 74LS86, 74LS02, 2764 and 74LS04 appear in the most repositories here.
How big is a typical board using the 74LS253?
The median is 236.8 × 169.8 mm, and 100% are two-layer designs.
What is the most popular open source board using the 74LS253?
By GitHub stars, Microdigital - TK 2000 by clemarfolly, with 17 stars.
Can I simulate one of these boards using the 74LS253 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.