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LM339ADBR

TILM339ADBR

Texas Instruments
Comparator Standard (General Purpose) Open-Collector 14-SSOP
Active2,480 in stock
Datasheet Digi-Key Compare Prices

Overview

The LM339ADBR is a quad independent precision voltage comparator designed to operate from a single power supply over a wide range of voltages from 2V to 30V. It features an open-collector output stage, allowing for easy level shifting and wired-AND logic configurations in multi-channel monitoring systems. This version is the A-grade variant, which offers a tighter maximum input offset voltage of 3mV for more precise threshold detection.

Why Choose This Part

The quad-channel configuration provides high functional density in a compact 14-SSOP package, reducing board space requirements. Its wide supply range and low quiescent current of 2.5mA make it versatile for both battery-powered and industrial 24V rail applications.

Applications

Limit Comparators
Monitoring sensor voltages against a fixed reference to trigger alarms or logic state changes.
Level Translators
Using the open-collector output to interface low-voltage logic with higher voltage systems up to 36V.
Oscillator Circuits
Implementing square wave generators or pulse-width modulation (PWM) controllers with minimal external components.
Window Comparators
Combining two channels to detect if a signal remains within a specific voltage range.

Key Specifications

Type Standard (General Purpose)
Output Type Open-Collector
Mounting Type Surface Mount
Package / Case 14-SSOP (0.209", 5.30mm Width)
Number of Elements 4
Operating Temperature 0degC ~ 70degC
Current - Output (Typ) 20mA
Supplier Device Package 14-SSOP
Current - Quiescent (Max) 2.5mA
Current - Input Bias (Max) 0.25uA @ 5V
Voltage - Input Offset (Max) 3mV @ 30V
Voltage - Supply, Single/Dual (+/-) 2V ~ 30V, +/-1V ~ 15V

Getting Started

When designing with the LM339ADBR, ensure a pull-up resistor is connected to the open-collector output to establish the desired high-level logic voltage. Since the device is a standard comparator without internal hysteresis, engineers should include external positive feedback to prevent output oscillations when processing slow-moving input signals.

Part of LM339 family » LM339

LM339 Family

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

Part Number Package Voltage - Input Offset (Max) Stock
LM339ADBR (this part) SSOP-14 3mV 2,480
LM339PWR TSSOP-14 5mV 16,873
LM339APWR TSSOP-14 3mV 14,014

Also Consider

LM339ADR TITexas Instruments - The same quad comparator in a standard 14-SOIC package for designs with less stringent space requirements.

Categories

Analog ICs > Comparators Microcontrollers > Texas Instruments