Texas Instruments

LM339N/PB

LM339N/PB Description

The LM339N/PB is a general-purpose comparator IC designed by Texas Instruments, featuring four independent comparators in a through-hole package. This device is well-suited for a variety of applications requiring high performance and reliability. Despite being marked as obsolete, the LM339N/PB remains a popular choice due to its robust design and wide operating voltage range of 2V to 36V for single supply and ±1V to ±18V for dual supply configurations. The maximum quiescent current of 2.5mA ensures low power consumption, making it ideal for battery-operated and energy-efficient systems. The LM339N/PB operates within a temperature range of 0°C to 70°C, ensuring stable performance in various environmental conditions.

LM339N/PB Features

• High Output Current: The LM339N/PB can deliver a typical output current of 16mA at 5V, making it suitable for driving various loads directly without additional amplification stages.
• Low Input Bias Current: With a maximum input bias current of 0.25µA at 5V, the LM339N/PB ensures minimal loading on the input signal sources, preserving signal integrity.
• Low Input Offset Voltage: The maximum input offset voltage of 5mV at 30V guarantees accurate comparisons, reducing the likelihood of errors in signal processing applications.
• Wide Operating Voltage Range: The device supports a wide supply voltage range, offering flexibility in power supply design and compatibility with various system architectures.
• Moisture Sensitivity Level 1: The LM339N/PB has an MSL rating of 1, indicating it is not moisture-sensitive and can be stored and handled without special precautions.
• REACH Compliant: The LM339N/PB is REACH unaffected, ensuring compliance with environmental and safety regulations.

LM339N/PB Applications

The LM339N/PB is ideal for applications requiring precise signal comparison and control. Its general-purpose nature makes it suitable for a wide range of uses, including:

• Level Shifting: Efficiently shifting voltage levels between different parts of a system.
• Window Detection: Monitoring and controlling signals within a specified voltage range.
• Zero-Crossing Detection: Detecting the point at which a signal crosses zero volts, useful in AC signal processing.
• Battery Monitoring: Monitoring battery voltage levels to ensure safe operation and prevent over-discharge.
• Analog-to-Digital Conversion: Assisting in the conversion of analog signals to digital form by comparing input signals to reference levels.

Conclusion of LM339N/PB

The LM339N/PB from Texas Instruments is a versatile and reliable general-purpose comparator IC that offers a balance of performance and efficiency. Its low input bias current, low input offset voltage, and high output current make it suitable for a variety of applications, from simple level shifting to more complex signal processing tasks. Despite being marked as obsolete, the LM339N/PB remains a valuable component for engineers and designers who require a dependable and cost-effective solution for their projects.