LM339D

Product Overview

Category: Integrated Circuit (IC)

Use: LM339D is a quad voltage comparator that operates from a single power supply. It is widely used in various electronic circuits for comparing voltages and determining the logic state of signals.

Characteristics: - Quad voltage comparator - Single power supply operation - Low input bias current - Wide range of operating voltage - High output sink current capability - Compatible with TTL, DTL, ECL, MOS, and CMOS logic systems

Package: LM339D is available in a small outline package (SOIC) with 14 pins.

Essence: The essence of LM339D lies in its ability to compare multiple input voltages and provide corresponding output signals based on the comparison results.

Packaging/Quantity: LM339D is typically sold in reels or tubes containing a specific quantity of ICs, such as 250 or 1000 units per reel/tube.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: ±1mV
• Input Bias Current: ±25nA
• Output Sink Current: 16mA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

LM339D has a total of 14 pins arranged as follows:

___________ VCC |1 14| GND IN(-) |2 13| OUT IN(+) |3 12| IN(4) IN(1) |4 11| IN(3) IN(2) |5 10| IN(5) |6 9| IN(6) |7 8| IN(7) -----------

Functional Features

• Quad voltage comparator: LM339D can compare up to four input voltages simultaneously.
• Single power supply operation: It can operate from a single power supply, simplifying circuit design.
• Low input bias current: LM339D has low input bias current, minimizing the impact on the input signal.
• Wide range of operating voltage: It can operate within a wide voltage range, making it suitable for various applications.
• High output sink current capability: The IC can handle high output currents, enabling it to drive external loads efficiently.
• Compatibility with various logic systems: LM339D is compatible with TTL, DTL, ECL, MOS, and CMOS logic systems.

Advantages and Disadvantages

Advantages: - Versatile and widely used in electronic circuits - Low power consumption - High-speed response - Compact size - Cost-effective

Disadvantages: - Limited number of comparators (four in the case of LM339D) - Output saturation voltage may affect accuracy in certain applications

Working Principles

LM339D compares the voltages applied to its inputs and produces corresponding output signals based on the comparison results. It utilizes internal operational amplifiers to perform the voltage comparisons and generate logical outputs.

Detailed Application Field Plans

LM339D finds applications in various fields, including but not limited to: 1. Voltage level detection and monitoring 2. Signal conditioning and amplification 3. Threshold detection and triggering 4. Motor control circuits 5. Battery management systems 6. Industrial automation 7. Audio processing circuits 8. Power supply monitoring and control

Alternative Models

Some alternative models to LM339D include: - LM339N - LM339M - LM339A - LM339E - LM339DG

These models offer similar functionality and characteristics, providing options for different application requirements.

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