The Intersil ISL43210 device is a precision, bidirectional, single SPDT analog switch designed to operate from a single +2. 7V to +12V supply. Targeted applications include battery powered equipment that benefit from the devices' low power consumption (5µW), low leakage currents (3nA max), and fast switching speeds (tON = 28ns, tOFF = 20ns). Cell phones, for example, often face ASIC functionality limitations. The number of analog input or GPIO pins may be limited and digital geometries are not well suited to analog switch performance. This device may be used to mux-in additional functionality while reducing ASIC design risk. Its small package alleviates board space limitations, making it an ideal solution. The ISL43210 is a single committed SPDT, which is perfect for use in 2-to-1 multiplexer applications.


  • Fully specified at 12V, 5V, and 3.3V supplies for 10% tolerances
  • ON-resistance (rON) 19Ω
  • rON matching between channels <1Ω
  • Low charge injection 5pC (Max)
  • Single supply operation +2.7V to +12V
  • Low power consumption (PD) <5µW
  • Low leakage current 10nA
  • Fast switching action
  • tON 28ns
  • tOFF 20ns
  • Guaranteed break-before-make switching
  • Minimum 2000V ESD protection per method 3015.7
  • TTL, CMOS compatible
  • Available in 6 Ld SOT-23 package
  • Pb-free available (RoHS compliant)


  • Battery-powered, handheld, and portable equipment Cellular/mobile phones Pagers Laptops, notebooks, palmtops
  • Communications systems Radios, ADSL Modems PBX, PABX
  • Test and measurement equipment Ultrasound Computerized Tomography (CT) Scanner Magnetic Resonance Image (MRI) Position Emission Tomography (PET) Scanner Electrocardiograph
  • Heads-up displays
  • Audio and video switching
  • Various circuits +3V/+5V DACs and ADCs Sample and hold circuits Digital filters Operational amplifier gain switching networks High frequency analog switching High speed multiplexing Integrator reset circuits

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOT23 Reel 3000
Active SOT23 Reel 250


Title language Type Format File Size Date
Datasheets & Errata
star ISL43210 Datasheet Datasheet PDF 704 KB
Application Notes & White Papers
AN535: Design Considerations for a Data Acquisition System (DAS) Application Note PDF 843 KB
AN557: Recommended Test Procedures for Analog Switches Application Note PDF 468 KB
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TB363: Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs) Other PDF 293 KB