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LM311P

Name: LM311P
Rating: 4.7 (12 reviews)

IC DIFF COMP W/STROBE 8DIP

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Mfr。パート #LM311P
パッケージ PDIP (P)-8
データシート
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仕様

Package	Tube
ProductStatus	Active
Type	General Purpose
NumberofElements	1
OutputType	DTL, MOS, Open-Collector, Open-Emitter, RTL, TTL
Voltage-SupplySingle/Dual(±)	3.5V ~ 30V, ±1.75V ~ 15V
Voltage-InputOffset(Max)	7.5mV @ ±15V
Current-InputBias(Max)	0.25µA @ ±15V
Current-Output(Typ)	50mA
Current-Quiescent(Max)	7.5mA
OperatingTemperature	0°C ~ 70°C
Package/Case	8-DIP (0.300, 7.62mm)
MountingType	Through Hole

概要

Description

The LM311P is a voltage comparator integrated circuit (IC) widely used in electronic applications. It features a high-speed response time, capable of operating with a wide supply voltage range of 3V to 36V. The LM311P has a single output, which can drive TTL logic levels, making it suitable for interfacing with digital circuits.
This comparator incorporates a built-in hysteresis, which helps eliminate noise and provides stable switching. The LM311P can compare two input voltages and output a high or low signal based on the difference, allowing for applications such as zero-crossing detectors, oscillators, and signal level detection.
It is available in multiple package types, including DIP and surface-mount options, making it versatile for various circuit designs. With its robust features and ease of integration, the LM311P is a popular choice in both hobbyist and professional electronics projects.

Features

The LM311P is a dual comparator designed for various applications in electronic circuits. Key features include:
1. Dual Comparator: Contains two independent comparators in one package.
2. Wide Supply Voltage Range: Operates from a single power supply of 3V to 36V or dual supplies from ±1.5V to ±18V.
3. Fast Response Time: Typical response time is around 1.5µs, making it suitable for high-speed applications.
4. Output Stage: Open-collector outputs allow for easy interfacing with other logic families and provide flexibility in output voltage levels.
5. High Input Impedance: Minimizes loading effects on the input signal.
6. Low Input Offset Voltage: Typically 2mV, ensuring accurate signal comparison.
7. Temperature Range: Rated for operation from -40°C to +85°C, suitable for industrial applications.
8. Typical Applications: Used in zero-crossing detectors, waveform generators, and voltage level detection.
The LM311P is widely used due to its reliability, versatility, and ease of use in various electronic designs.

Package

The LM311P is typically housed in a dual in-line package (DIP) format, specifically a 8-pin DIP package. This design facilitates easy integration into circuits and prototyping.

Pinout

The LM311P is a voltage comparator with a total of 8 pins. Here are the functions of each pin:
1. Pin 1 (V-): Negative power supply voltage.
2. Pin 2 (Inverting Input, -): Input for the signal to be compared (inverted).
3. Pin 3 (Non-Inverting Input, +): Input for the reference voltage (non-inverted).
4. Pin 4 (Output): Output signal indicating the comparison result.
5. Pin 5 (Ground): Ground connection.
6. Pin 6 (NC): No connection (not used).
7. Pin 7 (V+): Positive power supply voltage.
8. Pin 8 (Offset Null): Used for offset voltage adjustment.
The LM311P operates with a wide supply voltage range and is commonly used in applications such as zero-crossing detectors, voltage level detectors, and as a Schmitt trigger.

Manufacturer

The LM311P is manufactured by Texas Instruments, a well-known semiconductor company. Texas Instruments (TI) is a global technology company that designs and manufactures semiconductors and various integrated circuits, which are used in a wide range of electronic devices. Founded in 1930, TI is recognized for its innovation in analog and embedded processing technologies. The company provides a variety of products, including microcontrollers, digital signal processors, and analog components, serving industries such as automotive, industrial, consumer electronics, and telecommunications. Texas Instruments is also known for its commitment to research and development, producing devices that enhance performance and efficiency in electronic systems.

Application

The LM311P is a voltage comparator widely used in various application areas, including:
1. Analog Signal Processing: To compare voltages and trigger events.
2. Zero-Crossing Detectors: For detecting when signals cross a reference voltage.
3. Level Shifting: To convert analog signals to digital levels.
4. Switching Regulators: For feedback control in power supplies.
5. Temperature Sensing Circuits: To monitor and control temperature thresholds.
6. Pulse Width Modulation (PWM): In motor control and signal modulation applications.

Equivalent

Equivalent products to the LM311P include the TLC3702, LM339, LM2901, and the TLV3701. These comparators have similar functionality, though specifications may vary, such as supply voltage, output type, and response time. Always verify the datasheets for precise compatibility in your application.