Texas Instruments 74LS Series 2-Input NOR Gate IC SN74LS02N, 14-Pin PDIP, Logic Family LS

Texas Instruments SN74LS02N is a high-quality logic integrated circuit designed for digital systems requiring NOR functionality. As part of the 74LS Series, it offers low power Schottky technology, providing improved speed and reduced power consumption compared to conventional TTL ICs. This model features four independent 2-input NOR gates, enabling versatile logic processing in a single package. The PDIP form factor with 14 pins is ideal for through-hole mounting, facilitating easy integration onto prototype boards and production PCBs.

Each gate accepts two logic inputs and delivers a NOR output, allowing designers to implement complex digital functions and circuits efficiently. The device operates reliably within a supply voltage range of 4.75V to 5.25V, conforming to standard TTL logic requirements. Signal integrity is supported by a maximum propagation delay of just 5ns, enabling responsive performance in timing-sensitive applications such as instrumentation, automation, and embedded systems.

Built for robust operation, the SN74LS02N exhibits a wide operating temperature range of 0°C to 70°C, making it suitable for industrial, laboratory, and educational use. Maximum high-level output current is -0.4mA while low-level output current can reach up to 8mA, offering solid electrical characteristics for various drive scenarios. The LS logic family is well-recognized for reliability and consistent operation in digital logic circuits.

Physical dimensions include a length of 19.3mm and a height of 4.57mm, supporting compact designs. Mounting is straightforward due to its PDIP package style, which is preferred in many prototyping and manufacturing settings. Schmitt trigger input is not present, reinforcing the device’s classic logic gate behavior. The SN74LS02N is not rated for automotive standards nor does it hold special certifications; its focus is industrial and commercial PCB applications.

This logic gate IC is widely used in electronic circuits for signal processing, control logic, and digital interface design. Common applications include combinational logic, sequencing, and control circuitry in industrial automation, lab equipment, instrumentation panels, commercial electronics, and educational hardware projects.

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