ISL54221

High-Speed USB 2.0 (480Mbps) Multiplexer

OVERVIEW

The Intersil ISL54221 is a single supply dual 2:1 multiplexer that can operate from a single 2.7V to 5.5V 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 6.7Ω 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. 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 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 2.7V to 3.6V supply. The ISL54221 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 ISL54221 is available in a tiny 10 Ld 2.1mmx1.6mm µTQFN package. It operates over a temperature range of -40 to +85°C.

KEY FEATURES

  • High-Speed (480Mbps) and Full-Speed (12Mbps) Signaling Capability per USB 2.0
  • 1.8V Logic Compatible (2.7V to +3.6V supply)
  • Enable Pin to Open all Switches
  • Power OFF Protection
  • D-/D+ Pins Overvoltage Tolerant to 5.5V
  • -3dB Frequency 742MHz
  • Low ON Capacitance 7.4pF
  • Low ON-Resistance 6.7Ω
  • Single Supply Operation (VDD) 2.7V to 5.5V
  • Available in µTQFN Package
  • Pb-Free (RoHS Compliant)
  • Compliant with USB 2.0 Short Circuit and Overvoltage Requirements Without Additional External Components

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL54221
Basic Information
Production Status
Mass Production
Configuration
HS/HS
Switch Control
Logic Level
BW High (MHz)
500
BW Full (MHz)
500
IS
1 µA
Supply Voltage Vdd Min
2 V
Supply Voltage Vdd Max
5.5 V
Qualification Level
Standard
Supply Voltage Vdd Range (V)
2.0 to 5.5
Can Sample
YES
Temperature Range
-40 to +85

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