The ISL54211 dual Single Pole/Double Throw (SPDT) switches combine low distortion audio and accurate USB 2.0 High-Speed data (480Mbps) signal switching in the same low voltage device. When operated with a 2.7V to 5.0V single supply, these analog switches allow audio signal swings below-ground, allowing the use of a common USB and audio headphone connector in personal media players and other portable battery-powered devices. The ISL54211 logic control pins are 1.8V compatible with a supply voltage of 2.7V to 3.6V, which allows for control via a standard microcontroller. The part has an audio enable control pin (CTRL) to open all in-line switches and activate the audio click and pop circuitry. The high off-isolation and special click/pop circuitry of the audio switches eliminate clicks and pops in the headphones when the audio CODEC drivers are powering up or down or when a headphone is inserted or removed from the headphone jack. It's available in a tiny 10 Ld 1.8mm x 1.4mm ultra-thin µTQFN package and a 10 Ld 3mm x 3mm TDFN package. 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
  • Low distortion negative signal capability
  • Clickless/Popless audio switches
  • Enable pin to open all switches
  • Low distortion headphone audio signals
  • THD+N at 1mW into 32Ω load 0.014%
  • Cross-talk (20Hz to 20kHz) -100dB
  • OFF isolation (20Hz to 100kHz) 95dB
  • Single supply operation (VDD) 2.7V to 5.0V
  • -3dB bandwidth USB switch 700MHz
  • Available in µTQFN and TDFN packages
  • Compliant with USB 2.0 short circuit requirements without additional external components
  • Pb-free plus anneal (RoHS compliant)


  • MP3 and other personal media players
  • Cellular/Mobile phones
  • PDAs
  • Audio/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


Title language Type Format File Size Date
Datasheets & Errata
star ISL54211 Datasheet Datasheet PDF 1.53 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
ISL54211EVAL1Z MP3/USB 2.0 High-Speed Switch Evaluation Board Evaluation Renesas