2 open source boards using the 74LS189
Real designs built with the 74LS189, 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.
Eda designs
kyllikki
237.5 × 171.5 mm148 parts2LMIT32
Hol-1 8-bit CPU - RAM board
agben
109.2 × 78.7 mm22 parts2LNo license1
The 74LS189 in open source designs
The gallery holds 2 open source boards using the 74LS189 from 2 GitHub repositories; a typical one measures about 173.4 × 125.1 mm and carries around 85 components.
100% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is Eda designs by kyllikki.
74LS189: common questions
Where can I find a 74LS189 reference design?
Each of the 2 boards on this page is a real design using the 74LS189. 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 74LS189?
The 74LS04, 74LS139 and 74LS245 appear in the most repositories here.
How big is a typical board using the 74LS189?
The median is 173.4 × 125.1 mm, and 100% are two-layer designs.
What is the most popular open source board using the 74LS189?
By GitHub stars, Eda designs by kyllikki, with 32 stars.
Can I simulate one of these boards using the 74LS189 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.