onsemi

LM339AN

LM339AN Description

The LM339AN is a general-purpose comparator IC designed for a wide range of applications. Manufactured by onsemi, this IC features four independent comparators housed in a through-hole package, making it suitable for various electronic circuits. The LM339AN operates within a temperature range of 0°C to 70°C and supports a broad supply voltage range of 2V to 36V for single supply and ±1V to ±18V for dual supply configurations. With a typical output current of 18mA at 5V, it ensures robust performance in diverse electronic systems. The comparator offers a maximum input offset voltage of 2mV at 5V and a maximum input bias current of 0.25µA at 5V, ensuring high accuracy and low power consumption. The quiescent current is kept to a maximum of 2.5mA, further enhancing its efficiency. The LM339AN is packaged in a tube and has a moisture sensitivity level (MSL) of 1, indicating it is unaffected by moisture and suitable for unlimited storage. Although the product is now obsolete, its legacy as a reliable and versatile comparator remains significant in the electronics industry.

LM339AN Features

• General Purpose Comparator: The LM339AN is designed for general-purpose applications, making it a versatile choice for a wide range of electronic circuits.
• Four Independent Comparators: Each comparator operates independently, allowing for multiple comparisons within a single package, which is ideal for complex systems requiring multiple signal comparisons.
• Wide Operating Voltage Range: With a supply voltage range of 2V to 36V for single supply and ±1V to ±18V for dual supply, the LM339AN can be used in various power supply environments, enhancing its flexibility.
• Low Input Offset Voltage: A maximum input offset voltage of 2mV at 5V ensures high accuracy in signal comparisons, making it suitable for precision applications.
• Low Input Bias Current: The maximum input bias current of 0.25µA at 5V minimizes power consumption, making the LM339AN energy-efficient and suitable for low-power applications.
• High Output Current: A typical output current of 18mA at 5V allows the LM339AN to drive moderate loads directly, reducing the need for additional amplification stages.
• Low Quiescent Current: The maximum quiescent current of 2.5mA ensures minimal power consumption during operation, contributing to overall system efficiency.
• Through-Hole Mounting: The through-hole package type facilitates easy installation and integration into printed circuit boards (PCBs), ensuring reliable mechanical stability.
• Moisture Sensitivity Level 1: The MSL rating of 1 indicates that the LM339AN is unaffected by moisture, making it suitable for storage in various environmental conditions without the need for special handling.

LM339AN Applications

The LM339AN is well-suited for a variety of applications due to its general-purpose design and robust performance characteristics. Some specific use cases include:

• Signal Processing: Ideal for comparing analog signals in various signal processing applications, such as audio and video processing systems.
• Level Detection: Used in level detection circuits to monitor and control voltage levels, ensuring proper operation of electronic devices.
• Window Comparator Circuits: Can be configured to create window comparators for applications requiring multiple threshold levels, such as battery monitoring and power supply supervision.
• Pulse Width Modulation (PWM): Suitable for generating PWM signals in motor control and power conversion applications.
• Data Acquisition Systems: Used in data acquisition systems to compare and process analog signals before digitization.
• Automotive and Industrial Control: Given its wide operating voltage range and robust performance, the LM339AN is suitable for automotive and industrial control applications where reliability and accuracy are critical.

Conclusion of LM339AN

The LM339AN, despite being obsolete, remains a notable comparator IC due to its versatile design and robust performance. Its wide operating voltage range, low input offset voltage, and low quiescent current make it suitable for a variety of applications, from signal processing to industrial control. The through-hole package and moisture sensitivity level 1 ensure easy integration and reliable operation in diverse environments. While modern alternatives may offer enhanced features, the LM339AN's legacy as a reliable and efficient comparator continues to be relevant in the electronics industry.