LM339N 5Pcs Low Power Quad Voltage Comparator DIP-14 by TQDLYKHS

Description

Product Overview

The LM339N series is a classic low‑power quad voltage comparator designed for reliable operation in a wide range of industrial and scientific environments. Each of the four comparators within the IC can monitor voltage levels up to 36 V, providing open‑collector outputs that allow easy interfacing with digital logic, microcontrollers, and other downstream circuitry. Packaged in a standard 14‑pin DIP (DIP‑14) format, the device fits seamlessly into existing breadboards, prototype boards, and production‑grade PCBs, reducing the need for custom footprints or additional adapters.

Key specifications include a typical supply current of just 1 mA per comparator, a response time measured in microseconds, and a wide input voltage range that accommodates both single‑supply and dual‑supply configurations. The internal architecture features a differential input stage that ensures high accuracy even when operating near the supply rails, making the LM339N an excellent choice for precision sensor interfaces, power‑monitoring modules, and safety‑critical control loops. The device’s robust construction tolerates temperature variations from –40 °C to +85 °C, guaranteeing stable performance in harsh industrial settings.

The 5‑piece lot provides engineers with immediate redundancy for testing, development, and small‑scale production runs. Each unit is individually inspected for compliance with the original manufacturer’s specifications, ensuring that you receive components that meet the exacting standards required for high‑reliability applications. The compact dimensions of the package—2.76 × 1.97 × 0.16 inches—allow for dense board layouts while maintaining adequate thermal dissipation.

Usage

The LM339N comparators excel in scenarios where voltage thresholds must be detected quickly and accurately. Typical use cases include monitoring battery voltage levels in renewable energy systems, detecting over‑current conditions in motor drives, and providing reference signals for analog‑to‑digital converters in data acquisition systems. Because the outputs are open‑collector, designers can easily pull the line high with an external resistor, enabling flexible voltage level translation and interfacing with a variety of logic families, from TTL to CMOS.

In sensor applications, the LM339N can be paired with thermistors, photoresistors, or pressure transducers to create precise threshold‑based alarms. For power‑monitoring circuits, the device can compare sensed voltage against a reference to trigger protective shutdowns or to signal a microcontroller for corrective action. Its low quiescent current makes it suitable for battery‑powered devices where power efficiency is paramount, while the wide operating temperature range ensures reliable operation in outdoor or industrial environments.

The DIP‑14 footprint simplifies integration into both prototype and production environments. Engineers can quickly populate the IC on a solderless breadboard for rapid testing, then transition to a custom PCB without redesigning the component layout. This flexibility shortens development cycles and reduces overall project costs.

Why Choose Us

When sourcing critical components like the LM339N, quality and authenticity are non‑negotiable. Our inventory is sourced directly from reputable manufacturers and undergoes rigorous testing to verify electrical performance, pin integrity, and dimensional accuracy. Each batch is accompanied by a detailed test report that confirms compliance with the original LM339N specifications, giving you confidence that the parts will perform as expected in your designs.

We understand that time to market is essential, which is why we maintain a ready‑to‑ship inventory of the 5‑piece DIP‑14 sets. This ensures that you receive the components promptly, avoiding delays that can arise from back‑order situations. Our packaging includes anti‑static bags and protective cushioning to safeguard the ICs during transit, preserving their pristine condition upon arrival.

Beyond the product itself, we offer comprehensive technical support from a team of experienced engineers. While we do not provide direct design assistance, we can answer product‑specific questions, clarify datasheet details, and guide you on best practices for implementation. Our commitment to after‑sales service includes a straightforward return policy for any units that arrive damaged or do not meet the advertised specifications.

Key Features

• Five‑piece DIP‑14 set provides immediate redundancy for testing and small‑scale production.
• Low‑power consumption (≈1 mA per comparator) extends battery life in portable applications.
• Open‑collector outputs enable flexible interfacing with various logic levels and external pull‑up resistors.
• Wide operating temperature range (–40 °C to +85 °C) ensures reliable performance in harsh environments.
• Dedicated customer support and hassle‑free returns give peace of mind for engineers and procurement teams.

FAQ

What is the maximum input voltage the LM339N can handle?

The LM339N comparators can tolerate input voltages up to 36 V, making them suitable for a broad range of power‑monitoring and sensor applications.

Can the LM339N be used with a single power supply?

Yes, the device operates correctly with a single‑supply configuration, typically ranging from 2 V to 36 V, simplifying circuit design for many low‑power applications.

How do I connect the open‑collector outputs to a microcontroller?

Connect a pull‑up resistor (commonly 10 kΩ) from the output pin to the desired logic high voltage. The comparator will pull the line low when the input condition is met, allowing the microcontroller to read a clear high/low signal.

Is the 5‑piece set suitable for large production runs?

The set is intended for prototyping, testing, and small‑volume production. For larger quantities, we recommend ordering bulk packs directly from the manufacturer to benefit from volume pricing and supply chain efficiencies.

What warranty or guarantee do you provide?

All units are covered by a 30‑day warranty against defects and damage incurred during shipping. If a part does not meet the advertised specifications, we will arrange a replacement or refund according to our return policy.