LM393NG

Product Overview

Category: Integrated Circuit (IC)

Use: LM393NG is a dual differential comparator integrated circuit. It is commonly used in various electronic circuits for comparing voltages and determining the difference between two input signals.

Characteristics: - Low power consumption - Wide supply voltage range - High input impedance - Output compatible with TTL, CMOS, and MOS logic - Operating temperature range: -40°C to 85°C

Package: LM393NG is available in a DIP-8 (Dual In-line Package) format.

Essence: The essence of LM393NG lies in its ability to compare two input voltages and provide a digital output based on the comparison result.

Packaging/Quantity: LM393NG is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

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

Pin Configuration

LM393NG has a total of 8 pins arranged as follows:

___________ VCC | 1 8 | GND IN- | 2 7 | OUT IN+ | 3 6 | NC GND | 4 5 | NC ‾‾‾‾‾‾‾‾‾‾‾

Functional Features

1. Voltage Comparison: LM393NG compares the voltages applied to its two input pins (IN+ and IN-) and produces a digital output signal based on the comparison result.
2. Open-Collector Output: The output pin (OUT) is an open-collector, allowing easy interfacing with various logic families.
3. Wide Supply Voltage Range: LM393NG can operate within a wide supply voltage range of 2V to 36V, making it suitable for a variety of applications.

Advantages and Disadvantages

Advantages: - Low power consumption - High input impedance - Wide supply voltage range - Compatible with multiple logic families

Disadvantages: - Limited output current capability - Lack of built-in hysteresis

Working Principles

LM393NG operates based on the principle of voltage comparison. It compares the voltages applied to its two input pins (IN+ and IN-) and determines whether the voltage at IN+ is higher or lower than the voltage at IN-. The digital output signal reflects this comparison result.

Detailed Application Field Plans

1. Voltage Level Detection: LM393NG can be used in circuits where it is necessary to detect whether a voltage exceeds a certain threshold or falls within a specific range.
2. Signal Conditioning: It can be employed in signal conditioning circuits to convert analog signals into digital signals based on predefined thresholds.
3. Speed Control Systems: LM393NG can be utilized in speed control systems to compare reference and feedback voltages, enabling precise control over motor speeds.

Detailed and Complete Alternative Models

1. LM339: Quad differential comparator IC with similar characteristics and pin configuration as LM393NG.
2. LM311: Single differential comparator IC with higher speed and wider operating temperature range compared to LM393NG.
3. LM324: Quad operational amplifier IC that can also be used as comparators in certain applications.

(Note: This list is not exhaustive, and there are other alternative models available in the market.)

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