3 open source boards using the 74LS191
Real designs built with the 74LS191, 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.
TRS80 3D
palazzol
130.9 × 81.3 mm37 parts2LNo license1
Registers-StackPointer
DutchMaker
121.9 × 121.9 mm19 parts2LNo license14
AVG Discrete
Mazamars312
121.9 × 91.4 mm36 parts2LNo license6
The 74LS191 in open source designs
The gallery holds 3 open source boards using the 74LS191 from 3 GitHub repositories; a typical one measures about 121.9 × 91.4 mm and carries around 36 components.
100% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is Registers-StackPointer by DutchMaker.
Parts used alongside the 74LS191
74LS191: common questions
Where can I find a 74LS191 reference design?
Each of the 3 boards on this page is a real design using the 74LS191. 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 74LS191?
The median is 121.9 × 91.4 mm, and 100% are two-layer designs.
What is the most popular open source board using the 74LS191?
By GitHub stars, Registers-StackPointer by DutchMaker, with 14 stars.
Can I simulate one of these boards using the 74LS191 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.