LM239DG

Product Overview

Category: Integrated Circuits (ICs)

Use: LM239DG is a quad differential comparator designed for use in industrial, automotive, and consumer applications. It is commonly used to compare voltages and provide digital outputs based on the comparison results.

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

Package: LM239DG is available in a small outline package (SOP) with 14 pins.

Essence: The essence of LM239DG lies in its ability to accurately compare voltages and generate digital outputs, making it an essential component in various electronic circuits.

Packaging/Quantity: LM239DG is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: 2mV (maximum)
• Response Time: 1.3μs (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

LM239DG features 14 pins arranged as follows:

```

---

| | --|IN(-) VCC|-- --|IN(+) OUT|-- --|GND OUT|-- --|IN(+) OUT|-- --|IN(-) GND|-- --|OUT OUT|-- --|OUT IN(-)|-- --|OUT IN(+)|-- --|GND NC|-- --|OUT VCC|-- --|IN(+) IN(-)|-- --|IN(-) IN(+)|-- |___________| ```

Functional Features

• Quad differential comparators
• Low power consumption
• Wide common-mode voltage range
• Output compatible with TTL, MOS, and CMOS logic systems
• Built-in hysteresis for improved noise immunity

Advantages and Disadvantages

Advantages: - Accurate voltage comparison - Wide supply voltage range allows for versatile applications - Fast response time enables real-time monitoring - Low power consumption for energy-efficient designs - Open collector outputs provide flexibility in circuit integration

Disadvantages: - Limited number of comparators (4 in this case) - Requires external resistors for precise voltage level setting

Working Principles

LM239DG operates based on the principle of comparing two input voltages and generating a digital output based on the comparison result. It utilizes internal operational amplifiers to amplify and compare the input signals. The output is driven to a low state when the non-inverting input voltage exceeds the inverting input voltage.

Detailed Application Field Plans

LM239DG finds extensive application in various fields, including but not limited to: 1. Industrial automation: Voltage monitoring, motor control, and process control systems. 2. Automotive electronics: Battery management, voltage regulation, and safety systems. 3. Consumer electronics: Power supply monitoring, audio amplifiers, and signal conditioning circuits. 4. Communication systems: Signal detection, level shifting, and data encoding/decoding.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LM239DG are: 1. LM339DG: Quad differential comparator with open collector outputs. 2. LM2901DG: Quad differential comparator with push-pull outputs. 3. LM311DG: Single differential comparator with open collector output.

These alternatives can be considered based on specific requirements and design constraints.

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