10 open source boards using the 74LS85
Real designs built with the 74LS85, 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/ArduinoTTY
KALTCHUK
99.7 × 69.9 mm43 parts2LNo license94
Intellivision t card
abzman
143 × 174.7 mm75 parts2LUnlicense12
VIO MPF I
electrickery
156 × 100.1 mm63 parts2LNo license4
Atari-1090XL-80CVC
reifsnyderb
228.6 × 139.7 mm78 parts2LGPL-2.03
BitStack-DigiTrainer
RetroStack
320 × 150 mm262 parts2LMIT2
TRS80 3D
palazzol
130.9 × 81.3 mm37 parts2LNo license1
I2C
99.7 × 69.9 mm31 parts2LNo license94
MEM
99.7 × 69.9 mm28 parts2LNo license94
CPU09US4
roberto314
160 × 100 mm68 parts2LNo license1
FLASHv2
99.7 × 69.9 mm16 parts2LNo license94
The 74LS85 in open source designs
The gallery holds 10 open source boards using the 74LS85 from 7 GitHub repositories; a typical one measures about 136.9 × 90.6 mm and carries around 53 components.
100% are two-layer designs, the rest use four layers or more, and 30% carry an open source license.
The most starred is TTY by KALTCHUK.
Parts used alongside the 74LS85
Microcontrollers on boards using the 74LS85
What boards using the 74LS85 are built for
74LS85: common questions
Where can I find a 74LS85 reference design?
Each of the 10 boards on this page is a real design using the 74LS85. 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 74LS85?
The 74LS00, 74LS04, 74LS245, 74LS08 and 74LS174 appear in the most repositories here.
Which microcontrollers do boards using the 74LS85 use?
Most are built on AVR/Arduino (1).
How big is a typical board using the 74LS85?
The median is 136.9 × 90.6 mm, and 100% are two-layer designs.
What is the most popular open source board using the 74LS85?
By GitHub stars, TTY by KALTCHUK, with 94 stars.
Can I simulate one of these boards using the 74LS85 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.