Texas Instruments

LM339N

LM339N Description

The LM339N from Texas Instruments is a quad differential comparator designed for general-purpose applications. Housed in a 14-pin DIP package, this active RoHS3-compliant IC operates over a wide supply voltage range (2V to 30V single supply or ±1V to 15V dual supply), making it versatile for various circuit designs. With a low input bias current (0.25µA max @ 5V) and minimal quiescent current (2.5mA max), it ensures efficient power consumption. The device exhibits a maximum input offset voltage of 5mV @ 30V, ensuring precision in comparison tasks. Its through-hole mounting and non-MSLA (Moisture Sensitivity Level) status simplify handling and integration.

LM339N Features

• Quad Comparator Design: Four independent comparators in a single package, reducing board space and cost.
• Wide Voltage Range: Supports 2V–30V single or ±1V–15V dual supplies for flexible power configurations.
• Low Power Consumption: Quiescent current ≤2.5mA and input bias current ≤0.25µA enhance energy efficiency.
• High Precision: Input offset voltage ≤5mV ensures accurate signal comparison.
• Robust Packaging: 14-pin DIP in a tube, suitable for through-hole PCB assembly.
• Industrial Compliance: REACH unaffected, RoHS3 compliant, and EAR99/ECCN classified for global use.

LM339N Applications

The LM339N excels in analog signal processing, voltage monitoring, and threshold detection systems. Key applications include:

• Battery-Powered Devices: Voltage level detection in portable electronics due to low power draw.
• Automotive Systems: Window comparators for over/under-voltage protection circuits.
• Industrial Control: Limit comparators in motor drives or sensor interfaces.
• Consumer Electronics: Zero-crossing detectors in dimmers or audio equipment.
• Test Equipment: Precision signal conditioning and waveform shaping.

Conclusion of LM339N

The LM339N stands out for its versatility, low-power operation, and high accuracy, making it a preferred choice for comparator-based designs. Its quad-channel integration reduces component count, while the wide supply range accommodates diverse applications—from automotive to industrial systems. Texas Instruments’ reliability and compliance with global standards further solidify its position as a go-to solution for engineers seeking a cost-effective, high-performance comparator IC.