2 layers

Boards in 1 GitHub repository, designed in KiCad, that use the SN74LS169BN by Texas Instruments (0℃~+70℃ 1 25MHz 4.75V~5.25V Divide-by-2 Rising Edge Synchronous Up Counter、Down Counter PDIP-16 Counters, Dividers ROHS). See how each wires it, with its parts, size, README and files; the SN74LS169BN’s symbol, footprint and pinout are on its own page.
