LM339N

Overview

The LM339N is a quad differential voltage comparator manufactured by Texas Instruments, housed in a 14-pin PDIP package. It operates from a single power supply ranging from 2 V to 36 V. The device features open-collector outputs capable of sinking up to 6 mA per channel. Key electrical parameters include a maximum input offset voltage of 5 mV and a typical response time of 0.3 µs. It functions within an operating temperature range of 0°C to +70°C with a quiescent current of 500 µA.

Feature Summary

• Provides four independent differential comparators for signal processing
• Features open-collector outputs compatible with various logic families
• Operates efficiently on a single power supply rail

Applications

• Temperature sensing circuits
• Supply voltage monitoring systems
• Logic level conversion interfaces

Procurement Notes

Verify the specific manufacturer datasheet for the LM339N to confirm pinout compatibility and absolute maximum ratings before integration. Ensure the selected component meets the required thermal dissipation standards for the intended application environment. Cross-reference ordering information with official Texas Instruments documentation to avoid counterfeit parts.

Selection Notes

Select this component when a low-cost, general-purpose quad comparator is required for single-supply applications. Consider the open-collector output structure for interfacing with different voltage levels. Evaluate the 5 mV offset voltage specification against the precision requirements of the target circuit design.

Part Context

This part belongs to the LMx39 family of quad comparators, which includes variants like the LM139, LM239, and LM2901. These devices share similar functional architectures but differ in temperature ranges and performance specifications. The LM339N represents the commercial grade version suitable for standard industrial and consumer electronics applications.

Replacement Considerations

LM339DRG4 (SOIC-14), LM339PWRE4 (TSSOP-14), LM339AN/NOPB (PDIP-14)