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LM339APWR

TILM339APWR

Texas Instruments
Comparator Standard (General Purpose) Open-Collector 14-TSSOP
Active14,014 in stock
Datasheet Digi-Key Compare Prices

Overview

The LM339APWR is a quad-channel differential comparator designed for general-purpose voltage monitoring and signal conditioning. It features four independent comparators in a single 14-TSSOP package, utilizing an open-collector output architecture that allows for easy interfacing with various logic levels. This device operates over a wide supply range from 2V to 30V, making it suitable for both low-voltage digital systems and higher-voltage industrial applications.

Why Choose This Part

The quad-channel integration significantly reduces PCB footprint in dense designs like server power supplies and robotics. Its open-collector output provides system flexibility by allowing the output voltage level to be independent of the VCC supply, while the wide common-mode input range includes ground for single-supply operation.

Applications

Limit Comparators
Monitoring sensor voltages against a fixed reference to trigger alarms or logic signals when thresholds are exceeded.
Oscillators
Configuring the high-gain channels with RC networks to create square-wave generators or clock sources.
Level Translation
Using the open-collector outputs to interface between different logic families (e.g., 3.3V CMOS to 12V industrial logic) via pull-up resistors.
Battery Voltage Monitoring
Detecting low-battery conditions in cordless power tools and portable appliances where low input bias current is critical.

Key Specifications

Type Standard (General Purpose)
Output Type Open-Collector
Mounting Type Surface Mount
Package / Case 14-TSSOP (0.173", 4.40mm Width)
Number of Elements 4
Operating Temperature 0degC ~ 70degC
Current - Output (Typ) 20mA
Supplier Device Package 14-TSSOP
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

To evaluate this part, use a standard breadboard with a TSSOP-to-DIP adapter or integrate it into a prototype using a 14-pin TSSOP footprint. Ensure a pull-up resistor is placed on each output pin, as the open-collector architecture cannot drive a high logic state independently. Decouple the VCC pin with a 0.1uF ceramic capacitor placed close to the device to minimize switching noise.

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
LM339APWR (this part) TSSOP-14 3mV 14,014
LM339PWR TSSOP-14 5mV 16,873
LM339ADBR SSOP-14 3mV 2,480

Also Consider

LM339ADR TITexas Instruments - Identical quad comparator functionality but in a larger SOIC-14 package for easier hand-soldering and thermal management.