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LM339ADR

TILM339ADR

Texas Instruments
Quad comparator option when you need four comparator channels in a single package; useful to reduce component count for multi-channel designs.
NRND18,276 in stock

Overview

The LM339ADR is a cost-effective quad differential comparator designed to operate from a single power supply over a wide range of voltages from 2V to 30V. This device contains four independent voltage comparators with open-collector outputs, allowing for easy level shifting and logical wired-AND connections. It is a industry-standard solution for applications requiring multiple comparison channels with minimal board space.

Why Choose This Part

The quad-channel configuration in a 14-pin SOIC package significantly reduces component count in multi-channel designs. It features a low input bias current of 0.25uA and a wide supply voltage range, making it versatile for both battery-powered and industrial 24V systems. The open-collector output design provides design flexibility for interfacing with various voltage rails up to 30V.

Applications

Limit Threshold Detection
Monitoring sensor voltages against fixed reference levels for over-temperature or over-voltage protection.
Zero-Crossing Detectors
Identifying the point where an AC signal crosses zero for timing and synchronization in power electronics.
Oscillators and Multivibrators
Generating square waves or timing pulses in basic control logic circuits.
Level Translation
Using the open-collector output to interface between different logic families such as CMOS, TTL, and MOS.

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) 3mV @ 30V
Voltage - Supply, Single/Dual (+/-) 2V ~ 30V, +/-1V ~ 15V

Getting Started

To use the LM339ADR, ensure a pull-up resistor is connected to the open-collector output to define the high-level logic state. Decouple the supply pin with a 0.1uF ceramic capacitor placed close to the IC. When prototyping, this SOIC-14 part can be used on a standard DIP adapter board for breadboarding or integrated directly into PCB layouts using standard footprints.

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