The Intersil ISL43640 is a precision, bidirectional, analog switch configured as a 4 channel multiplexer/demultiplexer. The ISL43640 is designed to operate from a single +2V to +12V supply. It is equipped with an inhibit pin to simultaneously open all signal paths. ON resistance is 115Ω with a +5V supply, 45Ω with a +12V supply, and 190Ω with a +3V supply. Each switch can handle rail to rail analog signals. The off-leakage current is only 1nA at 25°C or 2. 5nA at 85°C. All digital inputs have 0. 8V to 2. 4V logic thresholds ensuring TTL/CMOS logic compatibility when using a single +5V supply. Some of the smallest packages are available, alleviating board space limitations, and making Intersil's newest line of low-voltage switches an ideal solution.


  • Fully Specified at 3V, 5V, and 12V Supplies for 10% Tolerances
  • ON Resistance (RON), VS = 5V 100Ω
  • RON Matching Between Channels <2Ω
  • Low Charge Injection 3pC (Max)
  • Single Supply Operation +2V to +12V
  • Low Power Consumption (PD) <3µW
  • Low Off Leakage Current 2.5nA
  • Fast Switching Action (VS = 5V)
  • tON 60ns
  • tOFF 30ns
  • Guaranteed Break-Before-Make
  • TTL, CMOS Compatible
  • Available in 10 Ld MSOP and 16 Ld QFN Packages
  • Pb-Free Plus Anneal Available (RoHS Compliant)


  • Battery Powered, Handheld, and Portable Equipment
  • Communications Systems Radios Telecom Infrastructure ADSL, VDSL Modems
  • Test Equipment Medical Ultrasound Electrocardiograph Magnetic Resonance Image CT and PET Scanners (MRI) ATE
  • Audio and Video Switching
  • Various Circuits +3V/+5V DACs and ADCs Sample and Hold Circuits 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 MSOP Tube 980
Active MSOP Reel 2500

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL43640 Datasheet Datasheet PDF 705 KB
Application Notes & White Papers
AN1690: Electronics Meets the Challenges of Patient Monitors Application Note PDF 377 KB
AN535: Design Considerations for a Data Acquisition System (DAS) Application Note PDF 843 KB