The Intersil ISL43110 and ISL43111 are precision, high performance analog switches that are fully specified for 3. 3V, 5V, and 12V operation, and feature improved leakage, ICC and switching time specifications. Designed to operate from a single +2. 4V to +12V supply, the low supply current (1µA Max over-temperature and voltage ranges) and low leakage currents (1nA) make these switches ideal for battery powered applications. Low rON and fast switching speeds over a wide operating supply range increase these devices usefulness in industrial equipment, portable instruments, and as input signal multiplexers for new generation, low supply voltage data converters. Some of the smallest packages are available alleviating board space limitations, and making Intersil’s newest line of low-voltage switches an ideal solution. The ISL43110 and ISL43111 are single-pole/single-throw (SPST) switches, with the ISL43110 being normally open (NO), and the ISL43111 being normally closed (NC). For similar performance ±5V supply versions, see the ISL43112 and ISL43113 data sheets.


  • Fully specified at 3.3V, 5V, and 12V supplies
  • Available in SOT-23 packaging
  • Single supply operation: +2.4V to +12V
  • ON-Resistance (rON max: 20Ω (V+ = 5V), 10Ω (V+ = 12V)
  • rON flatness: 1.5Ω
  • Charge injection (max): 10pC
  • Low power consumption (PD max): 5µW
  • Low leakage current (max at +85°C): 10nA (Off Leakage), 20nA (On Leakage)
  • Fast switching action
  • tON (max): 80ns
  • tOFF (max): 50ns
  • Minimum 2kV ESD protection per method 3015.7
  • TTL, CMOS compatible
  • Pb-free (RoHS compliant)


  • Battery powered, handheld, and portable equipment
  • Cellular/mobile phones, pagers
  • Laptops, notebooks, palmtops, PDAs
  • Communications systems
  • Radios
  • Test equipment
  • Logic and spectrum analyzers
  • Portable meters, DVM, DMM
  • Medical equipment
  • Ultrasound, MRI, CAT SCAN
  • Electrocardiograph, blood analyzer
  • Heads-up displays
  • Audio and video switching
  • General purpose 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

Product Options

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

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL43110, ISL43111 Datasheet Datasheet PDF 748 KB
Application Notes & White Papers
AN535: Design Considerations for a Data Acquisition System (DAS) Application Note PDF 843 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
PLC17019 - Q2 Cy 17 General PLC Notice Product Life Cycle Notice PDF 320 KB
TB471: Detecting the Absences of Video with HSYNC Present Other PDF 372 KB