LM1881N/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Video Sync Separator
• Characteristics: High-performance, low-power sync separator IC
• Package: DIP-8 (Dual In-line Package with 8 pins)
• Essence: Extracts synchronization information from composite video signals
• Packaging/Quantity: Available in tubes or reels, quantity depends on supplier

Specifications

• Supply Voltage: 4.75V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Sync Input Level: 0.3V to 2.0V
• Sync Output Level: 5V
• Sync Output Impedance: 300Ω
• Sync Output Rise/Fall Time: 20ns
• Sync Output Duty Cycle: 40% to 56%
• Dimensions: 9.81mm x 6.35mm x 3.30mm

Pin Configuration

The LM1881N/NOPB has a total of 8 pins arranged as follows:

```

---

| | --| SYNC OUT 1|-- VCC --| SYNC OUT 2|-- GND --| SYNC IN |-- BLANKING --| GND |-- VIDEO IN --| GND |-- COMP IN --| GND |-- BURST/BACK PORCH |___________| ```

Functional Features

• Extracts horizontal and vertical synchronization information from composite video signals
• Provides separate sync outputs for horizontal and vertical synchronization signals
• Supports both negative and positive polarity composite video signals
• Detects the presence of color burst and back porch signals
• Suitable for use in various video applications

Advantages and Disadvantages

Advantages: - High-performance sync separator with low power consumption - Supports both negative and positive polarity composite video signals - Compact DIP-8 package for easy integration into circuit designs

Disadvantages: - Limited operating temperature range (-40°C to +85°C) - Requires an external power supply (4.75V to 5.25V)

Working Principles

The LM1881N/NOPB works by analyzing the incoming composite video signal and extracting the horizontal and vertical synchronization information. It detects the sync pulses and separates them from the video signal, providing separate outputs for horizontal and vertical synchronization signals. The IC also detects the presence of color burst and back porch signals, which are essential for accurate video display.

Application Field Plans

The LM1881N/NOPB is widely used in various video-related applications, including: - Video surveillance systems - Video game consoles - Video editing equipment - Broadcast equipment - Video signal processing devices

Alternative Models

Other alternative models that provide similar functionality to the LM1881N/NOPB include: - AD724JRZ - MAX7456EUI - TDA4858PS

These alternative models can be considered based on specific requirements and availability.

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