8 open source boards using the 74HCT240
Real designs built with the 74HCT240, 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.
AVR/ArduinoHardmpu wt
PickledDog
106.1 × 95.4 mm46 parts2LApache-2.030
2FISC
DoctorWkt
214.6 × 123.2 mm73 parts2LGPL-3.010
FISC
231.3 × 96.5 mm59 parts2LGPL-3.07
Exordisk v1
roberto314
160 × 100 mm110 parts2LNo license1
SimplifiedEconetInstallKit
kgl2001
85 × 56 mm75 parts4LCC-BY-SA-4.01
KIM-1 RAMpager
hkzlab
123.4 × 134.6 mm65 parts2LCC-BY-NC-4.01
Registers-StackPointer
DutchMaker
121.9 × 121.9 mm19 parts2LNo license14
Exorset Floppy
160 × 100 mm85 parts2LNo license1
The 74HCT240 in open source designs
The gallery holds 8 open source boards using the 74HCT240 from 7 GitHub repositories; a typical one measures about 141.7 × 100 mm and carries around 69 components.
88% are two-layer designs, the rest use four layers or more, and 50% carry an open source license.
The most starred is Hardmpu wt by PickledDog.
Parts used alongside the 74HCT240
Microcontrollers on boards using the 74HCT240
What boards using the 74HCT240 are built for
74HCT240: common questions
Where can I find a 74HCT240 reference design?
Each of the 8 boards on this page is a real design using the 74HCT240. 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 74HCT240?
The 74HCT574, 74HCT541, 74HCT74, 74HC245 and 74HCT138 appear in the most repositories here.
Which microcontrollers do boards using the 74HCT240 use?
Most are built on AVR/Arduino (1).
How big is a typical board using the 74HCT240?
The median is 141.7 × 100 mm, and 88% are two-layer designs.
What is the most popular open source board using the 74HCT240?
By GitHub stars, Hardmpu wt by PickledDog, with 30 stars.
Can I simulate one of these boards using the 74HCT240 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.