LM139DG4

Product Overview

Category: Integrated Circuits (ICs)

Use: LM139DG4 is a quad voltage comparator that is designed to operate from a single power supply over a wide range of voltages. It is commonly used in applications where multiple voltage levels need to be compared.

Characteristics: - Quad voltage comparator - Wide operating voltage range - Low input bias current - Open collector outputs - High output sink current capability

Package: LM139DG4 is available in a small outline package (SOIC) with 14 pins.

Essence: The essence of LM139DG4 lies in its ability to compare multiple voltage levels and provide corresponding outputs based on the comparison results.

Packaging/Quantity: LM139DG4 is typically sold in reels, with each reel containing 2500 units.

Specifications

• Supply Voltage Range: 2V to 36V
• Input Offset Voltage: ±1mV
• Input Bias Current: ±25nA
• Output Sink Current: 6mA
• Response Time: 1.3μs

Detailed Pin Configuration

LM139DG4 has a total of 14 pins, which are assigned specific functions as follows:

1. Output 1
2. Inverting Input 1
3. Non-Inverting Input 1
4. VCC+
5. GND
6. Non-Inverting Input 2
7. Inverting Input 2
8. Output 2
9. Output 3
10. Inverting Input 3
11. Non-Inverting Input 3
12. Output 4
13. Inverting Input 4
14. Non-Inverting Input 4

Functional Features

• Quad voltage comparator allows for simultaneous comparison of four voltage levels.
• Wide operating voltage range enables compatibility with various power supply configurations.
• Low input bias current minimizes the impact on the compared voltage levels.
• Open collector outputs provide flexibility in connecting external components.
• High output sink current capability allows for driving external loads.

Advantages and Disadvantages

Advantages: - Simultaneous comparison of multiple voltage levels - Wide operating voltage range - Low input bias current - Flexible output configuration

Disadvantages: - Limited number of comparators (four in this case) - Requires an external power supply

Working Principles

LM139DG4 works by comparing the voltages applied to its input pins and providing corresponding outputs based on the comparison results. The comparator compares the voltage at the non-inverting input with the voltage at the inverting input and produces a high or low output accordingly.

Detailed Application Field Plans

LM139DG4 finds applications in various fields, including: 1. Battery management systems 2. Power supply monitoring 3. Signal conditioning circuits 4. Threshold detection 5. Level shifting

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to LM139DG4 are: 1. LM339 2. LM2901 3. LM311 4. LM393 5. LM324

These models offer similar functionality and can be used as replacements depending on specific requirements.

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