15 open source boards using the 74LS02
Real designs built with the 74LS02, 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.
Vic2020mainboard
danwerner21
357.8 × 124.5 mm127 parts2LNo license78
Z80-cmos nmos tester
djtersteegc
81.3 × 86.4 mm38 parts2LMIT61
Dragon64
333.2 × 205.9 mm220 parts2LNo license34
Z80VDP1B
lynchaj
100 × 100 mm93 parts2LNo license31
Leako
barbeque
149.1 × 98.8 mm128 parts2LNo license20
BitStack-DigiTrainer
RetroStack
320 × 150 mm262 parts2LMIT2
Z80-cmos nmos tester
Vakon84
81.3 × 86.4 mm38 parts2LMIT2
Lomax ColorMagic Redux
RichCini
254 × 137.7 mm148 parts4LNo license1
TRS-80 Color Computer 2 NTSC ( 26-3134B & 26-3136B)
qbancoffee
230 × 170 mm150 parts2LGPL-3.040
Backup
333.2 × 205.9 mm218 parts2LNo license34
Z80VDP1A
100 × 100 mm90 parts2LNo license31
Backup1
333.2 × 205.9 mm218 parts2LNo license34
Z80PSG1
100 × 100 mm64 parts2LNo license31
Z80SERIAL3
100 × 100 mm61 parts2LNo license31
Z80SERIAL2
100 × 100 mm59 parts2LNo license31
The 74LS02 in open source designs
The gallery holds 15 open source boards using the 74LS02 from 9 GitHub repositories; a typical one measures about 149.1 × 100 mm and carries around 127 components.
93% are two-layer designs, the rest use four layers or more, and 27% carry an open source license.
The most starred is Vic2020mainboard by danwerner21.
Parts used alongside the 74LS02
What boards using the 74LS02 are built for
74LS02: common questions
Where can I find a 74LS02 reference design?
Each of the 15 boards on this page is a real design using the 74LS02. 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 74LS02?
The 74LS00, 74LS04, 74LS174, 74LS244 and 74LS138 appear in the most repositories here.
How big is a typical board using the 74LS02?
The median is 149.1 × 100 mm, and 93% are two-layer designs.
What is the most popular open source board using the 74LS02?
By GitHub stars, Vic2020mainboard by danwerner21, with 78 stars.
Can I simulate one of these boards using the 74LS02 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.