4 layers57.5 × 49.5 mm

Boards in 1 GitHub repository, designed in KiCad, that use the SN74HC21D by Texas Instruments (-40℃~+85℃ 1.5V~4.2V 1.9V、4.4V、5.9V 100mV、400mV、400mV 19ns@6V,50pF 2 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 74HC Series AND Gate SOIC-14 Logic Gates ROHS). See how each wires it, with its parts, size, README and files; the SN74HC21D’s symbol, footprint and pinout are on its own page.

