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LM339N

TILM339N

Texas Instruments
Same comparator family in a through-hole PDIP-14 package for easier breadboarding and prototyping.
Active31,301 in stock
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Overview

The LM339N is a quad, general-purpose voltage comparator featuring four independent channels in a single 14-pin PDIP package. It is designed to operate from a single power supply over a wide range of voltages from 2V to 36V, or from split supplies. Its open-collector output architecture allows for easy interfacing with various logic levels, making it a staple for mixed-signal prototyping.

Why Choose This Part

The LM339N provides four comparators in a breadboard-friendly through-hole package, reducing PCB area or prototyping space. It features a low input bias current of 0.25uA and remains stable across a wide supply voltage range of 2V to 36V. The open-collector outputs allow for wired-OR connections, which simplifies complex logic steering without additional gates.

Applications

Level Translation
Using the open-collector output with a pull-up resistor to interface between different logic voltage domains.
Window Comparators
Utilizing two elements to monitor if a signal remains within a specific upper and lower voltage threshold.
Oscillator Circuits
Implementing square wave generators or pulse-width modulation (PWM) circuits using external RC networks.
Limit Detection
Monitoring sensor voltages against a reference to trigger alarms or system shutdowns when safety limits are exceeded.

Key Specifications

Type Standard (General Purpose)
Output Type Open-Collector
Mounting Type Through Hole
Package / Case 14-DIP (0.300", 7.62mm)
Number of Elements 4
Operating Temperature 0degC ~ 70degC
Current - Output (Typ) 20mA
Supplier Device Package 14-PDIP
Current - Quiescent (Max) 2.5mA
Current - Input Bias (Max) 0.25uA @ 5V
Voltage - Input Offset (Max) 5mV @ 30V
Voltage - Supply, Single/Dual (+/-) 2V ~ 30V, +/-1V ~ 15V

Getting Started

To use the LM339N, connect a bypass capacitor between the VCC and GND pins to ensure stability. Because it uses open-collector outputs, you must connect a pull-up resistor from the output pin to your desired logic voltage (e.g., 3.3V or 5V) to see a high-state signal. For prototyping, this part fits directly into standard 0.1-inch pitch breadboards and requires no specialized toolchain beyond a standard DC power supply and multimeter.

Part of LMx39/2901 Comparators family » LM339N

LM339N Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Temp Range Current - Output (Typ) Voltage - Input Offset (Max) Voltage - Supply, Single/Dual (+/-) Stock
LM339N (this part) 0degC ~ 70degC 20mA 5mV 2V 31,301
LM339N/NOPB -25degC ~ 85degC 16mA 5mV 2V 18,468

Also Consider

LM2901N TITexas Instruments - An automotive-qualified version with a wider operating temperature range of -40C to 125C.
LM339ADR TITexas Instruments - A surface-mount SOIC-14 version with tighter offset voltage specifications for precision applications.