SN7409N

Quadruple 2-Input Positive-AND Gate with Open-Collector Outputs, standard 14-pin plastic dual-in-line package footprint manufactured by Texas Instruments. Leverages open-collector outputs to allow wired-AND bus structuring while executing standard Boolean logical multiplications. Used to monitor multi-source check lines, drive bus configurations, and handle signal level conversions cleanly. Industry exact equivalents include Signetics N7409N, Fairchild DM7409N, Motorola MC7409N, and NTE7409. Historical equipment applications include Williams High Speed pinball, Atari Asteroidsarcade hardware, Rock-Ola 477 Max jukebox, Roland Juno-106 synthesizer, and Bally Xenonpinball tables.