LM239DT

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LM239DT

+BOM

IC COMP QUAD LOW PWR 14SOIC

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Specifications

Attribute Value
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
Type General Purpose
NumberofElements 4
OutputType CMOS, DTL, ECL, MOS, Open-Collector, TTL
Voltage-SupplySingle/Dual(±) 2V ~ 32V, ±1V ~ 16V
Voltage-InputOffset(Max) 5mV @ 30V
Current-InputBias(Max) 0.25µA @ 5V
Current-Output(Typ) 16mA @ 5V
Current-Quiescent(Max) 2mA
OperatingTemperature -40°C ~ 105°C
Package/Case 14-SOIC (0.154, 3.90mm Width)
MountingType Surface Mount

Overview

Description

The LM239DT is a quad comparator integrated circuit (IC) designed for low-power, low-offset voltage applications. It is part of the LM239 series, which is widely used in electronic circuits for comparing voltages. The IC contains four independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages. It can also function with dual power supplies.
Key features of the LM239DT include low input bias current, low input offset current, and low power consumption, making it suitable for battery-powered applications. The open-collector output allows for wired-AND connections, which is useful in digital circuits. The device is typically used in applications such as zero-crossing detectors, voltage level shifters, and logic level converters.
The LM239DT comes in a variety of package options, including the compact SOIC-14 package, which is suitable for space-constrained designs. Its robustness and versatility make it a popular choice for both analog and digital signal processing tasks in a range of electronic projects.

Equivalent

The LM239DT is a quad voltage comparator. Equivalent products include:
1. LM339 series (e.g., LM339N, LM339D) from various manufacturers like Texas Instruments, ON Semiconductor, or STMicroelectronics.
2. LM2901 series, which offers similar functionality with extended temperature ranges.
3. TLC3704, which provides similar quad comparator functionality with different specifications.
4. LM124, which can also be used depending on the application requirements.
Ensure to verify electrical specifications and pin configurations when selecting equivalents.

Features

The LM239DT is a quad voltage comparator integrated circuit (IC). It features four independent comparators designed to operate from a single power supply over a wide range of voltages. Key features include:
1. Wide Supply Voltage Range: Operates from 2V to 36V for single supply or ±1V to ±18V for dual supplies.
2. Low Input Offset Voltage: Typically around 2mV, which ensures precision.
3. Low Input Current: Typically 25nA, conserving power and improving performance.
4. Low Power Consumption: Uses minimal power, making it efficient for battery-operated devices.
5. Open Collector Output: Allows for wired OR connections and output level shifting.
6. Wide Common-Mode Range: Extends to the negative supply voltage, including ground for single supply operation.
7. Temperature Range: Operational from 0°C to +70°C for commercial grade or -40°C to +85°C for industrial grade.
8. Package: Available in surface-mount (SO-14) package.
These features make the LM239DT suitable for a variety of applications, including sensor interfaces, signal conditioning, and zero-crossing detectors.

Pinout

The LM239DT is a quad voltage comparator IC. It typically comes in a 14-pin package. Here's a concise overview of its pin functions:
1. Pin 1 (OUT1): Output for comparator 1
2. Pin 2 (IN1-): Inverting input for comparator 1
3. Pin 3 (IN1+): Non-inverting input for comparator 1
4. Pin 4 (VCC+): Positive supply voltage
5. Pin 5 (IN2+): Non-inverting input for comparator 2
6. Pin 6 (IN2-): Inverting input for comparator 2
7. Pin 7 (OUT2): Output for comparator 2
8. Pin 8 (OUT3): Output for comparator 3
9. Pin 9 (IN3-): Inverting input for comparator 3
10. Pin 10 (IN3+): Non-inverting input for comparator 3
11. Pin 11 (GND): Ground or negative supply voltage
12. Pin 12 (IN4+): Non-inverting input for comparator 4
13. Pin 13 (IN4-): Inverting input for comparator 4
14. Pin 14 (OUT4): Output for comparator 4
The LM239DT is used in various applications for comparing voltages and driving logic circuits. It operates over a wide voltage range, making it versatile for different electronic projects.

Manufacturer

The LM239DT is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a wide range of semiconductor products. The company serves diverse industries, including automotive, industrial, personal electronics, communications equipment, and computers. STMicroelectronics is known for its innovation in semiconductor technology and offers a comprehensive portfolio of products, including microcontrollers, sensors, power management devices, and more. The company operates globally with manufacturing facilities, R&D centers, and sales offices around the world, positioning itself as a leader in the semiconductor industry.

Application

The LM239DT is a quad comparator IC commonly used in various applications requiring voltage level detection and comparison. Key areas include:
1. Voltage Level Detection: Monitors input voltages to trigger actions when specific thresholds are crossed.
2. Zero-Crossing Detection: Used in AC signal applications to identify zero voltage points.
3. Pulse Width Modulation (PWM): Compares reference and input signals to generate PWM outputs.
4. Oscillators and Waveform Generators: Assists in creating precise timing sequences and waveforms.
5. Analog-to-Digital Conversion (ADC) Support: Acts as a part of ADC systems by providing reference voltage comparisons.
6. Signal Conditioning: Enhances signal clarity and precision in mixed-signal processing.
These applications benefit from the LM239DT's low power consumption and wide voltage range.

Package

The LM239DT is a quad comparator IC typically housed in a SOIC-14 (Small Outline Integrated Circuit) package.

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