Home > Industry Information > PI3USB221AZUAEX
The PI3USB221AZUAEX is a dedicated USB 2.0 signal switch with an SPDT (2:1 multiplexer) circuit configuration. It supports a single-supply voltage range from 2.3V to 3.6V and features bi-directional signal transmission capability. This device is designed to provide high-fidelity USB signal path management for tablets, phones, docking stations, and other equipment, maximizing signal integrity during switching to ensure compliance with USB 2.0 High-Speed (480 Mbps) specifications.
Category:Integrated Circuits (ICs);Interface;Analog Switches - Special Purpose
Manufacturer:Diodes Incorporated
Packaging:Tape & Reel (TR);Cut Tape (CT)
Part Status:Active
Applications:USB
Multiplexer/Demultiplexer Circuit:2:1
Switch Circuit:SPDT
Number of Channels:1
On-State Resistance (Max):6Ohm
Voltage - Supply, Single (V+):2.3V ~ 3.6V
-3db Bandwidth:1.1GHz
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:10-UFQFN
Supplier Device Package:10-UQFN (1.5x2)
Base Product Number:PI3USB221
Optimized for USB 2.0 High-Speed: A high bandwidth of 1.1 GHz and low insertion loss ensure signal integrity at 480 Mbps data rates, meeting USB 2.0 electrical specifications.
Ultra-Low On-Resistance: Only 6 Ω on-resistance minimizes signal voltage drop and power dissipation, particularly beneficial for performance in VBUS power paths or long-cable applications.
Fully Bi-Directional & Transparent: Supports bi-directional communication on data lines with no restrictions on signal direction, acting as a "transparent" bridge in the system.
Wide Low-Voltage Single-Supply Operation: A wide supply range of 2.3V to 3.6V allows direct powering from system 3.3V or 2.5V rails, simplifying power design.
Miniature Package: The extremely small 1.5x2 mm UQFN package offers a space-saving solution for space-constrained portable devices.
USB Port Multiplexing & Sharing: Enables switching a single physical USB port on a tablet or ultrabook between host and device functions (OTG).
Docking Stations & Port Replicators: Used to switch signal paths to different USB ports on a dock or to allow multiple devices to share one upstream port.
Device Detection & Signal Routing: In systems with multiple USB connectors (e.g., supporting both Type-A and Type-C), automatically routes data signals based on the connected device type.
Integrated USB Switching: Built into motherboard designs to enable/disable specific USB ports or to implement failover and redundancy.
Consumer Electronics & Mobile Devices: Widely used in smartphones, digital cameras, portable gaming consoles, and other devices requiring flexible USB connection management.
The PI3USB221AZUAEX is a highly integrated, dedicated USB switch that successfully combines high-speed performance, low conduction loss, and a miniature package. Its excellent bandwidth and signal fidelity make it a key component for implementing complex USB connectivity architectures in modern electronic devices. Whether designing multi-function USB ports, compact docking stations, or optimizing internal signal routing, this device provides an efficient, reliable, and standards-compliant solution.
Industry Information
