New 30Pcs for LM339 0.3V~+36V 50mA DIP-14 Low Power Quad Voltage Comparators IC LM339N

Description

Product Overview

The LM339N is a low‑power quad voltage comparator designed for a wide range of applications where precise voltage monitoring and threshold detection are essential. Each of the four independent comparators can operate from a supply voltage as low as 0.3 V up to a maximum of +36 V, making the device suitable for both low‑voltage battery‑powered circuits and higher‑voltage industrial systems. The device is packaged in a standard 14‑pin DIP (Dual In‑Line Package) which provides a familiar footprint for designers and ease of insertion into breadboards, prototype boards, and automated assembly lines. With a typical input bias current of 50 µA and a maximum input current of 50 mA per channel, the LM339N delivers reliable performance while consuming minimal power, an important consideration for energy‑conscious designs.

Each comparator within the LM339N features an open‑collector output stage, allowing the user to pull the output low when the input voltage exceeds the reference voltage, or let it float high through an external pull‑up resistor. This configuration provides flexibility in interfacing with a variety of logic families, including TTL, CMOS, and open‑collector compatible devices. The device also includes internal temperature compensation, ensuring stable operation across a broad temperature range, typically –40 °C to +125 °C. The 30‑piece lot supplied by Todiys ensures that engineers have sufficient inventory for both development and production runs, reducing lead times and simplifying supply chain management.

Usage

In industrial automation, the LM339N can be employed to monitor sensor outputs such as thermocouples, pressure transducers, and light sensors, providing a clean digital signal that can be processed by microcontrollers or PLCs. Its ability to handle a wide supply voltage range makes it ideal for interfacing with both low‑voltage analog sensors and higher‑voltage signal conditioning circuits. In scientific instrumentation, the comparator can be used to create precise voltage thresholds for data acquisition systems, ensuring that only signals above a defined level trigger further processing.

For hobbyists and makers, the LM339N is a versatile component for building projects like battery level indicators, over‑voltage protection circuits, and simple analog‑to‑digital converters. The DIP‑14 package is compatible with standard breadboard layouts, allowing rapid prototyping and testing. The low‑power nature of the device means that battery‑operated projects can achieve longer runtimes without sacrificing performance. Additionally, the open‑collector outputs enable easy interfacing with LED indicators, relay drivers, and other load devices, expanding the range of possible applications.

When designing multi‑channel monitoring systems, the four comparators can be configured independently, each with its own reference voltage and input signal. This enables the creation of complex decision‑making logic without the need for additional ICs, reducing board space and component count. The LM339N’s robust design also makes it suitable for harsh environments, where temperature fluctuations and electrical noise are common challenges.

Why Choose Us

Choosing the LM339N from Todiys provides confidence in both product quality and supply reliability. Each unit undergoes rigorous testing to ensure compliance with industry standards for electrical performance and durability. The components are sourced from reputable manufacturers and are verified for authenticity, eliminating the risk of counterfeit parts that can compromise circuit reliability.

Our 30‑piece packaging offers a balance between inventory convenience and cost efficiency, making it an ideal choice for small‑to‑medium production runs as well as educational labs. We provide clear, high‑resolution product images and detailed specifications to help you verify that the part meets your design requirements before purchase.

Customer support is a cornerstone of our service. While we do not provide technical design assistance, our knowledgeable staff can answer product‑related inquiries, confirm compatibility, and guide you through the ordering process. We also offer a straightforward return policy for any items that arrive damaged or do not match the listed specifications.

Key Features

• Four independent comparators in a single DIP‑14 package for compact multi‑channel designs
• Wide supply voltage range from 0.3 V to +36 V accommodates diverse power environments
• Low input bias current (50 µA) reduces power consumption for battery‑operated projects
• Open‑collector outputs provide flexible interfacing with various logic families and load devices
• Comprehensive after‑sales support and easy return process for peace of mind

FAQ

What is the maximum input voltage for each comparator?

The LM339N can handle input voltages up to the supply voltage (VCC) of the device, which can be as high as +36 V. This allows the comparators to be used in high‑voltage applications while maintaining accurate threshold detection.

Can the LM339N be used with a microcontroller that operates at 3.3 V?

Yes. By powering the LM339N at 5 V or 3.3 V and using appropriate pull‑up resistors, the open‑collector outputs can be interfaced directly with microcontroller input pins, providing reliable logic‑level signals.

Is the LM339N suitable for temperature‑sensitive applications?

The device includes internal temperature compensation and operates reliably from –40 °C to +125 °C, making it suitable for most temperature‑sensitive industrial and scientific applications.

How many comparators are included in the 30‑piece lot?

The lot contains 30 individual LM339N ICs, each providing four independent comparators, giving you a total of 120 comparator channels for extensive multi‑channel projects.

What should I do if I receive a damaged component?

Contact our customer service within 7 days of receipt with a photo of the damage. We will arrange a replacement or refund according to our return policy.