LM239AD

Product Overview

Category: Integrated Circuit (IC)

Use: LM239AD is a quad differential comparator designed for use in industrial and automotive applications. It is commonly used to compare voltages and determine the difference between two input signals.

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

Package: LM239AD is available in a small outline package (SOIC) with 14 pins.

Essence: The essence of LM239AD lies in its ability to accurately compare voltage levels and provide digital outputs based on the comparison results.

Packaging/Quantity: LM239AD is typically sold in reels or tubes, with each reel/tube containing a specified quantity of ICs.

Specifications

LM239AD has the following specifications:

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

Pin Configuration

The pin configuration of LM239AD is as follows:

```

---

| | --|IN(-) VCC|-- --|IN(+) OUT|-- --|GND INB|-- --|OUT IN|-- --|INA GND|-- --|OUTB IN(-)|-- --|INB(+) IN(+)|-- --|VCC IN(-)|-- --|OUTB OUTA|-- --|INA INA|-- --|GND GND|-- --|OUTB OUTB|-- --|INB INB|-- |___________| ```

Functional Features

• Quad differential comparator: LM239AD consists of four independent comparators, allowing simultaneous comparison of multiple input signals.
• Open collector outputs: The outputs of the comparators are open collector, providing flexibility for interfacing with other digital circuits.
• Wide supply voltage range: LM239AD can operate within a wide range of supply voltages, making it suitable for various applications.
• Low input offset voltage: The low input offset voltage ensures accurate and precise comparisons.

Advantages and Disadvantages

Advantages: - High accuracy in voltage comparisons - Wide operating temperature range - Versatile application possibilities - Fast response time

Disadvantages: - Limited output current capability - Requires external pull-up resistors for proper operation

Working Principles

LM239AD works based on the principle of comparing two input voltages. It measures the difference between the voltages and provides a digital output based on the result of the comparison. The comparators inside LM239AD use a combination of internal circuitry to achieve accurate voltage comparisons.

Detailed Application Field Plans

LM239AD finds applications in various fields, including but not limited to: - Industrial automation - Automotive electronics - Power management systems - Sensor interfaces - Battery monitoring systems

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LM239AD include: - LM339 - LM2901 - LM311 - LM393

These alternatives can be considered based on specific requirements and compatibility with the application.

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