ISL54225 High-Speed USB 2.0 (480Mbps) Multiplexer with Overvoltage Protection (OVP) ISL54225 Features High-Speed (480Mbps) and Full-Speed (12Mbps) The Intersil ISL54225 is a single supply dual 2:1 Signaling Capability per USB 2.0 multiplexer that can operate from a single 2.7V to 5.25V supply. It contains two SPDT (Single Pole/Double 1.8V Logic Compatible (2.7V to +3.6V Supply) Throw) switches configured as a DPDT. The part was Enable Pin to Open all Switches designed for switching or routing of USB High-Speed Low Power Mode signals and/or USB Full-speed signals in portable battery powered products. Power OFF Protection D-/D+ Pins Overvoltage Protection for +5.25V and The 6.5 switches were specifically designed to pass -5V Fault Voltages USB high speed/full speed data signals. They have high bandwidth and low capacitance to pass USB high speed -3dB Frequency 780MHz data signals with minimal DISTORTION. Low ON Capacitance 240MHz 3.3pF The ISL54225 has OVP circuitry on the D-/D+ COM pins Low ON-Resistance 6.5 that opens the USB in-line switches when the voltage at Single Supply Operation (V ) . 2.7V to 5.25V DD these pins exceeds 3.8V (typ) or goes negative by -0.5V Available in TQFN and TDFN Packages (typ). It isolates fault voltages up to +5.25V or down to Pb-Free (RoHS Compliant) -5V from getting passed to the other-side of the switch, thereby protecting the USB transceivers. Compliant with USB 2.0 Short Circuit and Overvoltage Requirements Without Additional The digital logic inputs are 1.8V logic compatible when External Components operated with a 2.7V to 3.6V supply. The ISL54225 has an output enable pin to open all the switches. It can be Applications*(see page 16) used to facilitate proper bus disconnect and connection when switching between the USB sources. MP3 and other Personal Media Players Cellular/Mobile Phones The ISL54225 is available in 10 Ld 1.8mmx1.4mm TQFN and 10 Ld TDFN packages. It operates over a PDAs temperature range of -40C to +85C. Digital Cameras and Camcorders USB Switching Typical Application USB 2.0 HS Eye Pattern With Switches in the Signal Path 3.3V 500 VDD OE LOGIC P SEL CONTROL VBUS HSD1- D- USB D- TRANSCEIVER HSD1+ OVP HSD2- D+ D+ USB HSD2+ TRANSCEIVER ISL54225 GND GND TIME SCALE (0.2ns/DIV) July 2, 2010 CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Intersil (and design) is a registered trademark of Intersil Americas Inc. FN7627.0 Copyright Intersil Americas Inc. 2010. All Rights Reserved All other trademarks mentioned are the property of their respective owners. USB CONNECTOR VOLTAGE SCALE (0.1V/DIV)ISL54225 Pin Configuration ISL54225 ISL54225 (10 LD 1.8X1.4 TQFN) (10 LD 3X3 TDFN) TOP VIEW TOP VIEW HSD1+ HSD1- PD 7 6 LOGIC 5 D- SEL 1 10 VDD OE 8 CONTROL GND VDD 9 4 9 OE HSD2- 2 OVP SEL 10 3 D+ 8 3 HSD1+ HSD2+ 1 2 4 7 HSD1- D+ HSD2- HSD2+ 5 6 D- GND OVP NOTE: 1. Switches Shown for SEL = Logic 1 and OE = Logic 0. Pin Descriptions Truth Table PIN HSD1-, HSD2-, TQFN TDFN NAME DESCRIPTION OE SEL HSD1+ HSD2+ STATE 1 2 HSD2- USB Data Port Channel 2 00 ON OFF Normal 2 3 HSD2+ USB Data Port Channel 2 01 OFF ON Normal 3 4 D+ USB Data COM Port 1 0 OFF OFF Low Power 4 5 GND Ground Connection 11 OFF OFF Normal 5 6 D- USB Data COM Port Logic 0 when 0.5V, Logic 1 when 1.4V with a 2.7V to 3.6V Supply. 6 7 HSD1- USB Data Port Channel 1 Note: In Low Power mode there is no persistence checking when in OVP condition. 7 8 HSD1+ USB Data Port Channel 1 89 OE Bus Switch Enable 9 10 VDD Power Supply 10 1 SEL Select Logic Control Input - PD PD Thermal Pad. Tie to Ground or Float TABLE 1. USB - OVP POSSIBLE SITUATIONS AND TRIP POINT VOLTAGE TRIP POINT CODEC SUPPLY SWITCH SUPPLY (V ) COMs SHORTED TO PROTECTED MIN MAX DD 2.7V to 3.3V 2.7V to 5.25V VBUS Yes 3.63V 3.95V 2.7V to 3.3V 2.7V to 5.25V -5V Yes -0.76V -0.29V FN7627.0 2 July 2, 2010 LOGIC CONTROL