
Overview
The 74LS670 is a specialty Logic made by Texas Instruments with 5 pins.
JLCPCB lists it (part C3210620). 34 open-source boards in 22 repositories on GitHub use it.
Symbol
The library has no symbol for this part yet.
Footprint
The library has no footprint for this part yet.
Order codes
1- 74LS670LCSC C3210620
Open-source boards using it
All 34- 2 layers182.9 × 172.7 mm

- 2 layers365.1 × 203.2 mm

DIAG
Nakazoto/CenturionComputer
This is just a simple backup of all the files related to the Centurion that I have stored on my HD. The Wiki itself has far more in-depth information about the Centurion and it's individual cards.
150 parts172 - 2 layers170.2 × 100 mm

Z80-SBC
skiselev/zeta_sbc
Zeta SBC is an Zilog Z80 based single board computer. It is inspired by Ampro Little Board Z80 and N8VEM project. Zeta SBC is software compatible with RomWBW Firmware
75 parts53GPL-3.0 - 2 layers65.3 × 63 mm

- 2 layers254 × 160 mm

- 2 layers160 × 200 mm

Retro programmer
lynchaj/duodyne
Duodyne is a hobbyist retrocomputer system designed to run ROMWBW. It is comprised of modules on a system bus
209 parts15 - 4 layers121.9 × 91.4 mm

AVG Discrete KiCad
nmikstas/atari-avg-replacements
Atari AVG chip replacements. Both CPLD andTTL versions of the chip.
214 parts14 - 4 layers76.2 × 151.8 mm

Questions
Where can I order the 74LS670?
JLCPCB lists it as part C3210620, with 0 in stock; the sellers' links on this page open their listings.
Which open-source boards use the 74LS670?
34 boards in 22 repositories on GitHub; the most starred are listed on this page, with their KiCad files.