PI3CH281QEX

Product Overview

• Category: Integrated Circuit (IC)
• Use: Signal Switch
• Characteristics: High-speed, Low-power, Bidirectional
• Package: QFN (Quad Flat No-Lead)
• Essence: Efficient signal switching solution
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Number of Channels: 2
• Switching Speed: <5ns
• Supply Voltage Range: 1.65V to 3.6V
• Operating Temperature Range: -40°C to +85°C
• Input/Output Capacitance: 4pF typical
• On-Resistance: 0.7Ω typical
• Off-Isolation: -30dB typical
• Power Dissipation: 0.5mW typical

Detailed Pin Configuration

The PI3CH281QEX has a total of 16 pins arranged as follows:

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| | | 1 9 16 | | | | 2 8 15 | | | | 3 7 14 | | | | 4 6 13 | | | | 5 10 12 | |_______________| ```

Pin Description: 1. VCC: Power supply voltage 2. GND: Ground reference 3. IN1: Input control signal for Channel 1 4. OUT1: Output signal for Channel 1 5. EN: Enable pin for Channel 1 6. IN2: Input control signal for Channel 2 7. OUT2: Output signal for Channel 2 8. EN: Enable pin for Channel 2 9-10, 12-15: Reserved pins 11: NC (No Connection) 16: VCC: Power supply voltage

Functional Features

• Bidirectional signal switching between two channels
• High-speed switching with minimal delay (<5ns)
• Low power consumption for energy-efficient operation
• Wide supply voltage range for compatibility with various systems
• Excellent off-isolation to minimize signal interference
• Compact QFN package for space-saving integration

Advantages and Disadvantages

Advantages: - Fast switching speed enables efficient data transmission - Low power consumption prolongs battery life in portable devices - Wide supply voltage range allows compatibility with different systems - Compact package saves board space

Disadvantages: - Limited number of channels (only 2) - Off-isolation may not be sufficient for highly sensitive applications

Working Principles

The PI3CH281QEX is a bidirectional signal switch designed to enable or disable the flow of signals between two channels. It operates based on control signals received at the input pins (IN1 and IN2) and the enable pins (EN). When the control signal is active and the enable pin is high, the corresponding channel is enabled, allowing the signal to pass through from the input to the output pin. Conversely, when the control signal is inactive or the enable pin is low, the channel is disabled, blocking the signal flow.

Detailed Application Field Plans

The PI3CH281QEX is widely used in various applications that require efficient signal switching. Some potential application fields include:

1. Communication Systems: Used in routers, switches, and network equipment for signal routing and switching.
2. Test and Measurement Equipment: Enables signal selection and routing in oscilloscopes, logic analyzers, and other testing instruments.
3. Audio/Video Systems: Facilitates signal switching in audio/video receivers, set-top boxes, and multimedia devices.
4. Industrial Automation: Used in control systems to switch signals between different components or subsystems.
5. Automotive Electronics: Enables signal routing in infotainment systems, navigation units, and vehicle communication modules.

Detailed and Complete Alternative Models

1. PI3CH480QEX: Similar bidirectional signal switch with 4 channels instead of 2.
2. PI3CH110QEX: Bidirectional signal switch with enhanced off-isolation for more sensitive applications.
3. PI3CH210QEX: Dual-channel signal switch with lower on-resistance for reduced signal loss.

These alternative models offer similar functionality but may have different specifications or additional features to suit specific application requirements.

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