6 open source boards using the 74HC138
Real designs built with the 74HC138, 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.
OS816
c0pperdragon
76.7 × 76.7 mm36 parts4LNo license26
6502 VGA Card Pro
acwright
100 × 57.6 mm23 parts2LCERN-OHL-P-2.047
6502 Storage Card Pro
100 × 57.6 mm20 parts2LCERN-OHL-P-2.047
6502 Video Card Pro
100 × 57.6 mm20 parts2LCERN-OHL-P-2.047
6502 Video Card
100 × 57.6 mm18 parts2LCERN-OHL-P-2.047
6502 RAM Card
100 × 57.6 mm15 parts2LCERN-OHL-P-2.047
The 74HC138 in open source designs
The gallery holds 6 open source boards using the 74HC138 from 2 GitHub repositories; a typical one measures about 100 × 57.6 mm and carries around 20 components.
83% are two-layer designs, the rest use four layers or more, and 83% carry an open source license.
The most starred is 6502 VGA Card Pro by acwright.
What boards using the 74HC138 are built for
74HC138: common questions
Where can I find a 74HC138 reference design?
Each of the 6 boards on this page is a real design using the 74HC138. 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 74HC138?
The median is 100 × 57.6 mm, and 83% are two-layer designs.
What is the most popular open source board using the 74HC138?
By GitHub stars, 6502 VGA Card Pro by acwright, with 47 stars.
Can I simulate one of these boards using the 74HC138 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.