The ISL54225 is a single supply dual 2:1 multiplexer that can operate from a single 2.7V to 5.25V supply. It contains two Single Pole/Double Throw (SPDT) 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 6.5Ω switches were specifically designed to pass USB High-Speed/Full-Speed data signals. They have high bandwidth and low capacitance to pass USB High-Speed data signals with minimal distortion. The ISL54225 has OVP circuitry on the D-/D+ COM pins that opens the USB in-line switches when the voltage at these pins exceeds 3.8V (typ.) or goes negative by -0.5V (typ.). It isolates fault voltages up to +5.25V or down to -5V from getting passed to the other side of the switch, thereby protecting the USB transceivers. The digital logic inputs are 1.8V logic compatible when operated with a 2.7V to 3.6V supply. The ISL54225 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 ISL54225 is available in 10 Ld 1.8mm x 1.4mm µTQFN and 10 Ld TDFN packages. It operates over a temperature range of -40 °C to +85 °C.


  • 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
  • Low power mode
  • Power OFF protection
  • D-/D+ pins overvoltage protection for +5.25V and -5V fault voltages
  • -3dB frequency: 780MHz
  • Low ON capacitance at 240MHz: 3.3pF
  • Low ON-resistance: 6.5Ω
  • Single supply operation (VDD): 2.7V to 5.25V
  • Available in µTQFN and TDFN packages
  • Pb-free (RoHS compliant)
  • Compliant with USB 2.0 short circuit and overvoltage requirements without additional external components


  • MP3 and other personal media players
  • Cellular/Mobile phones
  • PDAs
  • Digital cameras and camcorders
  • USB switching

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TDFN Tube 100
Active TDFN Reel 6000
Active uTQFN Reel 3000
Active uTQFN Reel 250


Title language Type Format File Size Date
Datasheets & Errata
star ISL54225 Datasheet Datasheet PDF 1.08 MB
PCN10114 - Part Marking Configuration Change for Intersil TDFN, uTDFN, and uTQFN Packaged Products Product Change Notice PDF 205 KB

memoryBoards & Kits

Part Number Title Type Company
ISL54225IRTZEVAL1Z High-Speed USB 2.0 (480Mbps) Multiplexer or Switch Evaluation Board Evaluation Renesas