LM339DR

Product Overview

Category: Integrated Circuits (ICs)

Use: LM339DR is a quad voltage comparator that is commonly used in various electronic circuits for comparing voltages and making decisions based on the comparison results.

Characteristics: - Low power consumption - Wide supply voltage range - High input impedance - Open collector outputs - Fast response time

Package: SOIC-14

Essence: The LM339DR is an essential component in many electronic devices and systems where voltage comparison is required. It provides a reliable and efficient solution for voltage monitoring and decision-making processes.

Packaging/Quantity: LM339DR is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: ±1mV
• Input Bias Current: ±25nA
• Response Time: 1.3μs
• Output Sink Current: 16mA
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM339DR is a quad voltage comparator with 14 pins arranged as follows:

___________ VCC | 1 14 | GND IN1 | 2 13 | OUT1 IN2 | 3 12 | OUT2 IN3 | 4 11 | OUT3 IN4 | 5 10 | OUT4 GND | 6 9 | NC OUT | 7 8 | NC ‾‾‾‾‾‾‾‾‾‾‾‾

Functional Features

• Quad voltage comparator: LM339DR contains four independent voltage comparators in a single package, allowing for multiple voltage comparison operations simultaneously.
• Open collector outputs: The outputs of the comparators are open collector type, which provides flexibility in connecting external components and allows for wired OR configurations.
• Wide supply voltage range: LM339DR can operate within a wide range of supply voltages, making it suitable for various applications.
• Low power consumption: The IC is designed to consume minimal power, ensuring energy efficiency in electronic systems.

Advantages and Disadvantages

Advantages: - Versatile and widely used in different electronic circuits - High input impedance allows for easy interfacing with other components - Fast response time enables quick decision-making based on voltage comparisons - Open collector outputs provide flexibility in circuit design

Disadvantages: - Limited output current capacity may require additional buffering for certain applications - Input offset voltage may introduce small errors in precision applications

Working Principles

The LM339DR compares the voltages applied to its input pins and produces corresponding digital outputs based on the comparison results. Each comparator inside the IC consists of a differential amplifier stage followed by an output stage. When the voltage at the non-inverting input (+) is higher than the voltage at the inverting input (-), the output goes low (logic 0). Conversely, when the voltage at the non-inverting input is lower than the inverting input, the output goes high (logic 1).

Detailed Application Field Plans

The LM339DR finds applications in various fields, including but not limited to: 1. Battery management systems 2. Motor control circuits 3. Voltage monitoring and protection circuits 4. Signal conditioning circuits 5. Industrial automation systems 6. Audio amplifiers 7. Power supply control circuits

Detailed and Complete Alternative Models

Some alternative models to LM339DR that serve similar functions are: - LM339N - LM2901 - LM311 - LM393

These alternative models offer comparable features and can be used as substitutes in many applications.

In conclusion, the LM339DR is a versatile quad voltage comparator widely used in electronic circuits for voltage comparison and decision-making processes. Its low power consumption, wide supply voltage range, and fast response time make it suitable for various applications across different industries.