5 open source boards using the 74LS194
Real designs built with the 74LS194, 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.
TI99 22
danwerner21
350 × 224.3 mm242 parts2LNo license50
Microdigital - TK 2000
clemarfolly
236.8 × 169.8 mm195 parts2LNo license17
ESP32TI99 22
244 × 244 mm257 parts4LNo license4
BitStack-DigiTrainer
RetroStack
320 × 150 mm262 parts2LMIT2
TK2000 InterfaceDeDrive
65.1 × 92.8 mm18 parts2LNo license17
The 74LS194 in open source designs
The gallery holds 5 open source boards using the 74LS194 from 4 GitHub repositories; a typical one measures about 244 × 169.8 mm and carries around 242 components.
80% are two-layer designs, the rest use four layers or more, and 20% carry an open source license.
The most starred is TI99 22 by danwerner21.
Parts used alongside the 74LS194
Microcontrollers on boards using the 74LS194
What boards using the 74LS194 are built for
74LS194: common questions
Where can I find a 74LS194 reference design?
Each of the 5 boards on this page is a real design using the 74LS194. 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 74LS194?
The 74LS04, 74LS08, 74LS244, 74LS245 and 74LS32 appear in the most repositories here.
Which microcontrollers do boards using the 74LS194 use?
Most are built on ESP32 (1).
How big is a typical board using the 74LS194?
The median is 244 × 169.8 mm, and 80% are two-layer designs.
What is the most popular open source board using the 74LS194?
By GitHub stars, TI99 22 by danwerner21, with 50 stars.
Can I simulate one of these boards using the 74LS194 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.