2 layers

Boards in 2 GitHub repositories, designed in KiCad, that use the SN75107BD by Texas Instruments (0℃~+70℃ 4.75V~5.25V SOIC-14 Interface - Specialized ROHS). See how each wires it, with its parts, size, README and files; the SN75107BD’s symbol, footprint and pinout are on its own page.

