DATASHEET ISL54225 FN7627 Rev 0.00 High-Speed USB 2.0 (480Mbps) Multiplexer with Overvoltage Protection (OVP) July 2, 2010 The ISL54225 is a single supply dual 2:1 multiplexer Features that can operate from a single 2.7V to 5.25V supply. High-Speed (480Mbps) and Full-Speed (12Mbps) It contains two SPDT (Single Pole/Double Throw) Signaling Capability per USB 2.0 switches configured as a DPDT. The part was designed for switching or routing of USB High-Speed signals 1.8V Logic Compatible (2.7V to +3.6V Supply) and/or USB Full-speed signals in portable battery Enable Pin to Open all Switches powered products. Low Power Mode The 6.5switches were specifically designed to pass Power OFF Protection USB high speed/full speed data signals. They have D-/D+ Pins Overvoltage Protection for +5.25V and high bandwidth and low capacitance to pass USB high -5V Fault Voltages speed data signals with minimal DISTORTION. -3dB Frequency 780MHz The ISL54225 has OVP circuitry on the D-/D+ COM Low ON Capacitance 240MHz 3.3pF pins that opens the USB in-line switches when the voltage at these pins exceeds 3.8V (typ) or goes Low ON-Resistance 6.5 negative by -0.5V (typ). It isolates fault voltages up to Single Supply Operation (V ) 2.7V to 5.25V DD +5.25V or down to Available in TQFN and TDFN Packages -5V from getting passed to the other-side of the Pb-Free (RoHS Compliant) switch, thereby protecting the USB transceivers. Compliant with USB 2.0 Short Circuit and The digital logic inputs are 1.8V logic compatible when Overvoltage Requirements Without Additional operated with a 2.7V to 3.6V supply. The ISL54225 External Components has an output enable pin to open all the switches. It can be used to facilitate proper bus disconnect and Applications*(see page 16) connection when switching between the USB sources. MP3 and other Personal Media Players The ISL54225 is available in 10 Ld 1.8mmx1.4mm Cellular/Mobile Phones TQFN and 10 Ld TDFN packages. It operates over a temperature range of -40C to +85C. PDAs 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- USB D- D- TRANSCEIVER HSD1+ OVP HSD2- D+ D+ USB HSD2+ TRANSCEIVER ISL54225 GND GND TIME SCALE (0.2ns/DIV) FN7627 Rev 0.00 Page 1 of 18 July 2, 2010 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 Rev 0.00 Page 2 of 18 July 2, 2010 LOGIC CONTROL