Quadruple 2-Input Monolithic Positive-AND Digital Logic Gates with Open-Collector Outputs, 4.75V to 5.25V Standard Gold-Plate Bipolar TTL Supply Range, 14-Pin Ceramic Dual Inline Package (CDIP-14) or Plastic Dual Inline Package (PDIP-14) Structural Framework, 15ns Standard Channel Propagation Delay at 5.0V Rail, High-Reliability Early 9N09/7409 Core Architecture Blueprint, High-Voltage Output Pull-Up Multi-Channel Steering Array, Low Static Power Consumption Bipolar Processing, Fully Buffered Signal Inputs, Foundational Hardware Boolean Control and Wired-AND Logic Interfacing Switch | Vintage high-performance digital logic integrated circuit manufactured by Fairchild Semiconductor under dual industry tracking catalog registration index 9N09/7409 (commonly stored under logistics inventory trackers as Fairchild 9N09). Housing four entirely independent 2-input positive-AND logic gates configured with open-collector NPN transistor output stages, this specialized device requires external resistor pull-ups to establish high-level output voltage planes. This open architecture permits digital hardware engineers to bind multiple outputs together onto a single wire line to execute complex "Wired-AND" logic operations cleanly, making it an excellent drop-in selection for driving high-voltage indicator lamps, isolating multiplexed bus tracks, or matching mismatched logic level planes. | Industry Exact Equivalents: Fairchild 9N09/7409, Fairchild 9N09, Fairchild 7409PC, TI SN7409N, National DM7409N | Industry Functional Cross-References: 7409, 9N09, SN7409, HD7409P, DM7409, NTE7409 | Military Specification National Stock Number (NSN): 5962-01-016-8433 (Base 7409 Open-Collector AND Gate Matrix)
