LM239ADRE4

Product Overview

Category: Integrated Circuits (ICs)

Use: LM239ADRE4 is a quad differential comparator designed for use in industrial, automotive, and commercial applications. It is commonly used for voltage level detection, waveform shaping, and signal conditioning.

Characteristics: - Quad differential comparator - Low input offset voltage - Wide supply voltage range - High input impedance - Open collector outputs - Low output saturation voltage

Package: The LM239ADRE4 is available in an SOIC-14 package, which provides ease of integration into various circuit designs.

Essence: The essence of LM239ADRE4 lies in its ability to accurately compare voltage levels and provide digital outputs based on the comparison results.

Packaging/Quantity: The LM239ADRE4 is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: 2mV (maximum)
• Input Bias Current: 25nA (maximum)
• Response Time: 1.3μs (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM239ADRE4 has a total of 14 pins arranged as follows:

```

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

Functional Features

• Quad differential inputs allow for versatile voltage comparisons.
• Open collector outputs enable easy interfacing with other digital circuits.
• Wide supply voltage range allows for flexibility in various applications.
• Low input offset voltage ensures accurate voltage level detection.
• High input impedance minimizes loading effects on the measured signals.

Advantages

• Accurate and reliable voltage level detection.
• Versatile functionality with quad differential inputs.
• Easy integration into various circuit designs.
• Suitable for industrial, automotive, and commercial applications.
• Low power consumption.

Disadvantages

• Limited output current capability.
• Not suitable for high-frequency applications.
• Requires external pull-up resistors for proper operation.

Working Principles

The LM239ADRE4 operates based on the principle of comparing two input voltages and providing a digital output based on the comparison result. It utilizes internal comparators to compare the voltage levels at its differential input pins. The output is driven low when the voltage at the non-inverting input is higher than the voltage at the inverting input, and it is driven high otherwise.

Detailed Application Field Plans

The LM239ADRE4 finds applications in various fields, including but not limited to: 1. Voltage level detection in power supply circuits. 2. Waveform shaping in signal processing circuits. 3. Signal conditioning in sensor interfaces. 4. Overvoltage/undervoltage protection in automotive systems. 5. Window comparators in control systems.

Alternative Models

1. LM339ADRE4: Similar to LM239ADRE4 but with open-drain outputs instead of open collector outputs.
2. LM2901ADRE4: Quad differential comparator with lower supply voltage range (2V to 28V).
3. LM311DRE4: Single differential comparator with faster response time (0.3μs typical).

These alternative models provide similar functionality and can be considered as substitutes depending on specific application requirements.

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