The TC7USB221FT(EL) is a high-speed USB 2.0 switch manufactured by Toshiba Semiconductor and Storage. It's designed to allow a single USB port to be shared between two different devices, enabling flexible connectivity options in various applications.

Applications:

• USB Port Sharing: Allows two devices to share a single USB port on a host system.
• Mobile Devices: Used in smartphones and tablets for switching between different USB functions (e.g., data transfer and charging).
• Docking Stations: Enables connectivity to multiple USB devices through a docking station.
• Automotive Infotainment Systems: Facilitates switching between different USB sources.
• Industrial Equipment: Used in industrial control systems for USB device selection.

Features:

• High-Speed USB 2.0: Supports USB 2.0 data transfer rates up to 480 Mbps.
• Low On-Resistance: Provides minimal signal attenuation during switching.
• Low Capacitance: Minimizes signal distortion and ensures signal integrity.
• Bi-Directional Switching: Allows data to flow in both directions between the USB ports.
• Low Power Consumption: Designed for efficient power usage.
• Compact Package: Available in a small package for space-constrained applications.

Benefits:

• Increased Connectivity: Expands the number of USB devices that can be connected to a system.
• Improved Signal Integrity: Low on-resistance and capacitance ensure minimal signal degradation.
• Reduced Power Consumption: Extends battery life in portable devices.
• Space Saving: Compact package size allows for dense circuit designs.
• Simplified System Design: Simplifies the design of USB switching applications.

Additional Details:

The TC7USB221FT(EL) typically includes control pins for selecting which USB port is active. Refer to the Toshiba datasheet for detailed electrical specifications, including insertion loss, isolation, and return loss. Proper PCB layout techniques are essential to maintain signal integrity at high USB 2.0 data rates. Decoupling capacitors should be placed close to the power supply pins to minimize noise. The device is commonly used in applications where it is necessary to share a limited number of USB ports between multiple devices.