DATASHEET ISL54224 FN6969 Rev 1.00 High-Speed USB 2.0 (480Mbps) Multiplexer with Overvoltage Protection (OVP) September 19, 2013 and Overvoltage Indicator Output The ISL54224 is a single supply dual 2:1 multiplexer that can Features operate from a single 2.7V to 5.25V supply. It contains two SPDT High-speed (480Mbps) and full-speed (12Mbps) signaling (Single Pole/Double Throw) switches configured as a DPDT. The capability per USB 2.0 part was designed for switching of USB data signals in portable battery powered products. 1.8V logic compatible (2.7V to +3.6V supply) The 6.5switches were specifically designed to pass USB high OE/ALM pin to open all switches and indicate overvoltage speed/full speed data signals. They have high bandwidth and fault condition low capacitance to pass USB high speed data signals with Power OFF protection minimal distortion. D-/D+ pins overvoltage protection for +5.25V and -5V fault The ISL54224 has OVP circuitry on the D-/D+ com pins that voltages opens the USB in-line switches when the voltage at these pins -3dB frequency . 780MHz exceeds 3.8V (typ) or goes negative by -0.5V (typ). It isolates Low ON capacitance 240MHz 3.3pF fault voltages up to +5.25V or down to -5V from getting passed to the other-side of the switch, thereby protecting the USB Low ON-resistance 6.5 transceivers. Single supply operation (V ) 2.7V to 5.25V DD The digital logic inputs are 1.8V logic compatible when operated Available in TQFN and TDFN packages with a 2.7V to 3.6V supply. The ISL54224 has an open drain Pb-free (RoHS compliant) OE/ALM pin that can be driven Low to open all switches and outputs a Low when the OVP circuitry is activated. It can be used Compliant with USB 2.0 short circuit and overvoltage to facilitate proper bus disconnect and connection when requirements without additional external components switching between the USB sources. Applications The ISL54224 is available in 10 Ld 1.8mmx1.4mm TQFN and 10 Ld TDFN packages. It operates over a temperature range of MP3 and other personal media players -40C to +85C. Cellular/mobile phones PDAs Related Literature Digital cameras and camcorders See AN1571 ISL54224IRTZEVAL1Z Evaluation Board User s Manual USB switching 3.3V 3.3V 500 100k VDD OE/ALM LOGIC SEL P CONTROL VBUS HSD1- USB D- D- TRANSCEIVER HSD1+ OVP HSD2- D+ D+ USB HSD2+ TRANSCEIVER ISL54224 GND GND TIME SCALE (0.2ns/DIV) FIGURE 1. TYPICAL APPLICATION FIGURE 2. USB 2.0 HS EYE PATTERN WITH SWITCHES IN THE SIGNAL PATH FN6969 Rev 1.00 Page 1 of 18 September 19, 2013 USB CONNECTOR VOLTAGE SCALE (0.1V/DIV)ISL54224 Pin Configuration ISL54224 ISL54224 (10 LD 1.8x1.4 TQFN) (10 LD 3x3 TDFN) TOP VIEW TOP VIEW HSD1+ HSD1- PD 7 6 LOGIC CONTROL SEL D- 1 10 VDD 5 OE/ALM 8 4M 4M 4M HSD2- 9 9 GND 2 OE/ALM VDD 4 OVP SEL 10 3 HSD2+ 8 D+ 3 HSD1+ 4MW 1 2 7 D+ 4 HSD1- HSD2- HSD2+ 5 6 GND OVP D- NOTE: 1. Switches Shown for SEL = Logic 1 and OE/ALM = Logic 1. Truth Table Pin Descriptions OE/ALM SEL HSD1-, HSD1+ HSD2-, HSD2+ PIN 0X OFF OFF TQFN TDFN NAME DESCRIPTION 10 ON OFF 1 2 HSD2- USB Data Port Channel 2 11 OFF ON 2 3 HSD2+ USB Data Port Channel 2 Logic 0 when 0.5V, Logic 1 when 1.4V with a 2.7V to 3.6V 34 D+ USB Data COM Port Supply. 45 GND Ground Connection 56 D- USB Data COM Port 6 7 HSD1- USB Data Port Channel 1 7 8 HSD1+ USB Data Port Channel 1 8 9 OE/ALM Switch Enable/Alarm (open drain connection) Drive Low to Open All Switches Outputs Low when OVP is Activated 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 OE/ALM DD 2.7V to 3.3V 2.7V to 5.25V VBUS Yes 3.63V 3.95V Low 2.7V to 3.3V 2.7V to 5.25V -5V Yes -0.76V -0.29V Low FN6969 Rev 1.00 Page 2 of 18 September 19, 2013 LOGIC CONTROL