ISL54222
High-Speed USB 2.0 (480Mbps) Multiplexer

Key Features

• High-Speed (480Mbps) and Full-Speed (12Mbps) Signaling Capability per USB 2.0
• 1.8V Logic Compatible
• Enable Pin to Open all Switches
• Power OFF Protection
• D-/D+ Pins are Overvoltage Tolerant to 5.5V
• -3dB Frequency 782MHz
• Low ON Capacitance 6.5pF
• Low ON-Resistance 5.5Ω
• Single Supply Operation (V_DD) 1.8V to 3.3V
• Available in µTQFN, TDFN, and MSOP Packages
• Pb-Free (RoHS Compliant)
• Compliant with USB 2.0 Short Circuit and Overvoltage Requirements Without Additional External Components

Description

The Intersil ISL54222 is a single supply dual 2:1 multiplexer that can operate from a single 1.8V to 3.3V supply. It contains two SPDT (Single Pole/Double Throw) switches configured as a DPDT. The part was designed for switching or routing of USB High-Speed signals and/or USB Full-speed signals in portable battery powered products.

The 5.5Ω switches can swing rail-to-rail and were specifically designed to pass USB full speed data signals that range from 0V to 3.3V and USB high speed data signals that range from 0V to 400mV with a single supply as low as 1.8V. They have high bandwidth and low capacitance to pass USB high speed data signals with minimal distortion.

The part can be used in Personal Media Players and other portable battery powered devices that need to route USB high-speed signals and/or full-speed signals to different transceiver sections of the device while connected to a single USB host (computer).

The digital logic inputs are 1.8V logic compatible when operated with a 1.8V to 3.3V supply. The ISL54222 has an output enable pin to open all the switches. It can be used to facilitate proper bus disconnect and connection when switching between the USB sources.

The ISL54222 is available in 10 Ld 1.8mmx1.4mm µTQFN, 10 Ld TDFN and 10 Ld MSOP packages. It operates over a temperature range of -40 to +85°C.

Applications

• MP3 and other Personal Media Players
• Cellular/Mobile Phones
• PDA's
• Digital Cameras and Camcorders
• USB Switching