2 open source boards using the 74HC138LQ

Real designs built with the 74HC138LQ, 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 74HC138LQ in open source designs

The gallery holds 2 open source boards using the 74HC138LQ from 1 GitHub repository; a typical one measures about 197 × 132 mm and carries around 1332 components.

100% use four copper layers or more, and 0% carry an open source license.

The most starred is Panel by ItsShadowCone.

Microcontrollers on boards using the 74HC138LQ

RP2040/RP2350 1

74HC138LQ: common questions

Where can I find a 74HC138LQ reference design?

Each of the 2 boards on this page is a real design using the 74HC138LQ. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.

Which microcontrollers do boards using the 74HC138LQ use?

Most are built on RP2040/RP2350 (1).

How big is a typical board using the 74HC138LQ?

The median is 197 × 132 mm, and 0% are two-layer designs.

What is the most popular open source board using the 74HC138LQ?

By GitHub stars, Panel by ItsShadowCone, with 0 stars.

Can I simulate one of these boards using the 74HC138LQ 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.