9 open source boards using the 74LS74

Real designs built with the 74LS74, 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.

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The 74LS74 in open source designs

The gallery holds 9 open source boards using the 74LS74 from 8 GitHub repositories; a typical one measures about 203.4 × 172.7 mm and carries around 102 components.

89% are two-layer designs, the rest use four layers or more, and 44% carry an open source license.

The most starred is Multi by homebrew8088.

Parts used alongside the 74LS74

Microcontrollers on boards using the 74LS74

ESP32 1

What boards using the 74LS74 are built for

74LS74: common questions

Where can I find a 74LS74 reference design?

Each of the 9 boards on this page is a real design using the 74LS74. 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 74LS74?

The 74LS245, 74LS04, 74LS138, 74LS139 and 74LS373 appear in the most repositories here.

Which microcontrollers do boards using the 74LS74 use?

Most are built on ESP32 (1).

How big is a typical board using the 74LS74?

The median is 203.4 × 172.7 mm, and 89% are two-layer designs.

What is the most popular open source board using the 74LS74?

By GitHub stars, Multi by homebrew8088, with 238 stars.

Can I simulate one of these boards using the 74LS74 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.

9 open source boards using the 74LS74

Multi

C64-250407-Replica

TI99 22

Leako

Tandy-Color-Computer-Multi-Pak