FSUSB42UMX

Product Overview

Category

FSUSB42UMX belongs to the category of USB switch ICs.

Use

This product is primarily used for switching between two USB sources in electronic devices.

Characteristics

• Package: The FSUSB42UMX comes in a small form factor package, making it suitable for compact designs.
• Essence: It provides a convenient solution for managing multiple USB inputs and outputs.
• Packaging/Quantity: The FSUSB42UMX is typically packaged in reels or tubes and is available in large quantities.

Specifications

The FSUSB42UMX has the following specifications:

• Supply Voltage: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Switching Speed: <10ns
• On-Resistance: <0.5Ω
• Maximum Continuous Current: 500mA

Detailed Pin Configuration

The FSUSB42UMX has a total of 8 pins, which are configured as follows:

1. VBUS1: Power supply input for USB port 1.
2. D+1: Data line 1 for USB port 1.
3. D-1: Data line 1 for USB port 1.
4. GND1: Ground connection for USB port 1.
5. VBUS2: Power supply input for USB port 2.
6. D+2: Data line 2 for USB port 2.
7. D-2: Data line 2 for USB port 2.
8. GND2: Ground connection for USB port 2.

Functional Features

• Automatic Switching: The FSUSB42UMX can automatically detect and switch between USB sources without user intervention.
• Low Power Consumption: This IC is designed to minimize power consumption, making it suitable for battery-powered devices.
• ESD Protection: It provides built-in electrostatic discharge (ESD) protection to safeguard connected devices.

Advantages and Disadvantages

Advantages

• Compact Size: The small form factor of the FSUSB42UMX allows for easy integration into space-constrained designs.
• Automatic Switching: The automatic switching feature eliminates the need for manual intervention, enhancing user convenience.
• ESD Protection: The built-in ESD protection ensures the safety of connected devices.

Disadvantages

• Limited Number of Ports: The FSUSB42UMX supports only two USB ports, which may not be sufficient for applications requiring more connections.
• Current Limitation: The maximum continuous current of 500mA may restrict its use in high-power USB applications.

Working Principles

The FSUSB42UMX operates based on a combination of analog and digital circuitry. It utilizes internal switches to connect or disconnect the USB data lines and power lines between the two ports. The IC continuously monitors the status of the USB ports and automatically switches the connection when a new USB source is detected.

Detailed Application Field Plans

The FSUSB42UMX finds application in various electronic devices, including but not limited to:

1. Laptops and Notebooks: Enables seamless switching between different USB peripherals.
2. Smartphones and Tablets: Facilitates quick switching between charging and data transfer modes.
3. Gaming Consoles: Allows easy connection of multiple gaming accessories without the need for manual cable swapping.
4. Industrial Equipment: Provides a reliable solution for managing USB connections in industrial automation systems.

Detailed and Complete Alternative Models

1. FSUSB42UCX: Similar to FSUSB42UMX, but with enhanced ESD protection features.
2. FSUSB42R: A variant with integrated USB Type-C support for next-generation devices.
3. FSUSB42LMX: Low-power version of FSUSB42UMX, suitable for energy-efficient applications.

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