LM339A-TR

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LM339A-TR

+Nomenclature

GENERAL PURPOSE COMPARATOR, OPEN

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Spécifications

Attribut Valeur
PartStatus Active
Type Differential
NumberofElements 4
OutputType Open-Collector, CMOS, TTL
Voltage-Supply,Single/Dual(±) 2.5V ~ 36V, ±1.25V ~ 18V
Voltage-InputOffset(Max) 6mV @ 5V
Current-InputBias(Max) 0.001µA @ 5V
Current-Quiescent(Max) 300µA
OperatingTemperature -40°C ~ 125°C
Package/Case 14-TSSOP (0.173", 4.40mm Width)
MountingType Surface Mount
SupplierDevicePackage 14-TSSOP

Présentation

Description

The LM339A-TR is a quad voltage comparator integrated circuit, designed for a variety of applications requiring precise voltage comparison. Housed in a compact package, it includes four independent voltage comparators that can operate from a single power supply over a wide voltage range. This versatility makes it suitable for both low and high voltage applications.
Key features of the LM339A-TR include low power consumption, open collector outputs that allow for wired AND connections, and the ability to operate with a single or dual power supply. The comparators are designed to provide a common-mode input voltage range that includes ground, making them ideal for use in ground-sensing applications.
Typical applications include zero-crossing detectors, voltage level shifters, and pulse generators. The LM339A-TR is often used in consumer electronics, automotive, and industrial control systems due to its reliability and performance. With its ability to operate in a wide temperature range, it is a robust choice for many design needs.

Equivalent

The LM339A-TR is a quad voltage comparator. Equivalent products include:
1. LM339N
2. LM339D
3. LM239 (military-grade)
4. MC3302 (Motorola)
5. UA339 (Texas Instruments)
6. LM2901 (low-power variant)
7. TLV1704 (TI, with higher precision)
These chips offer similar functionality with possible variations in packaging and electrical specifications but are used interchangeably in applications requiring voltage comparison.

Features

The LM339A-TR is a quad voltage comparator featuring four independent precision voltage comparators. It operates over a wide range of supply voltages, from 2V to 36V, making it versatile for various applications. The key features include low input offset voltage, low input bias current, and a common-mode input voltage range that includes ground. It provides an open-collector output, allowing multiple outputs to be connected in a wired-OR configuration. The LM339A-TR is designed for single-supply or dual-supply operation and is ideal for applications requiring low power consumption. It is commonly used in level detection, signal buffering, and interfacing with logic circuits. The device comes in a small outline package (SOP) for efficient space utilization on PCBs. It is designed to be robust, with high immunity to unwanted transients and noise, which enhances its reliability in various electronic environments.

Pinout

The LM339A-TR is a quad voltage comparator integrated circuit, typically housed in a 14-pin package. It consists of four independent voltage comparators designed to operate from a single power supply over a wide range of voltages. Here’s a concise overview of its pin configuration:
1. VCC (Pin 3): Positive supply voltage.
2. GND (Pin 12): Ground connection.
3. Inputs (Pins 4, 5, 6, 7, 9, 10, 11, 13): These pins serve as the inverting and non-inverting inputs for the four comparators (two inputs per comparator).
4. Outputs (Pins 1, 2, 14, 8): Each output corresponds to one of the comparators.
The main function of the LM339A-TR is to compare input voltages and provide a digital output based on the comparison. If the non-inverting input voltage is greater than the inverting input voltage, the output is high; otherwise, it is low. The device is versatile, used in applications like oscillators, voltage level shifters, and function generators.

Manufacturer

The LM339A-TR is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a broad range of semiconductor products. These products include microcontrollers, sensors, power management devices, and analog and digital integrated circuits. STMicroelectronics serves various industries, including automotive, industrial, personal electronics, and communications equipment. The company is known for its innovation and focus on developing sustainable technologies, making it a significant player in the global semiconductor industry.

Application

The LM339A-TR is a quad voltage comparator commonly used in various applications, including zero-crossing detectors, overvoltage protection circuits, level shifters, and oscillators. It's ideal for analog signal processing where comparisons of voltages are required. Additionally, it can be used in sensor interfacing, power supply monitoring, and window comparators. Its ability to operate with a single power supply and low power consumption makes it suitable for battery-operated devices and portable electronics. Its applications also extend to automotive and industrial systems where robust and reliable voltage comparison is necessary.

Package

The LM339A-TR is a quad voltage comparator IC, typically housed in a surface-mount package such as the SOIC-14 (Small Outline Integrated Circuit with 14 pins). This package type is designed for compact, space-efficient applications on printed circuit boards.

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