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LM339DRG4

TILM339DRG4

Texas Instruments
Comparator Standard (General Purpose) Open-Collector 14-SOIC
NRND4,485 in stock
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Overview

The LM339DRG4 is a quad-channel independent precision voltage comparator designed to operate from a single power supply over a wide range of voltages. It features four independent comparators with open-collector outputs, allowing for easy level shifting and wired-OR logic configurations in mixed-signal circuits.

Why Choose This Part

The device supports a wide supply range from 2V to 36V, providing flexibility for both battery-powered and industrial rail systems. Its quad-element design in a single 14-SOIC package saves significant PCB real estate while maintaining a low quiescent current of 2.5mA max.

Applications

Limit Comparators
Monitoring signal levels against fixed reference voltages in industrial control systems.
Oscillator Circuits
Creating simple square wave generators or pulse-width modulation (PWM) signals.
Voltage Level Translation
Interfacing between different logic families (e.g., 5V TTL to 15V CMOS) using the open-collector output stage.
Zero-Crossing Detectors
Identifying the point where an AC signal crosses the ground reference for timing or synchronization.

Key Specifications

Type Standard (General Purpose)
Output Type Open-Collector
Mounting Type Surface Mount
Package / Case 14-SOIC (0.154", 3.90mm Width)
Number of Elements 4
Operating Temperature 0degC ~ 70degC
Current - Output (Typ) 20mA
Supplier Device Package 14-SOIC
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

When designing with the LM339DRG4, ensure a pull-up resistor is connected to the output, as the open-collector architecture cannot drive high logic levels independently. Use decoupling capacitors (typically 0.1uF) close to the VCC pin to minimize noise sensitivity, especially when multiple comparators switch simultaneously.

Also Consider

LM2901DR TITexas Instruments - A pin-compatible quad comparator designed for a wider automotive temperature range (-40C to 125C).
LM339ADR TITexas Instruments - An 'A' suffix version providing tighter input offset voltage specifications for higher precision applications.

Categories

Analog ICs > Comparators