The Intersil ISL43841 device is a precision, bidirectional, analog switches configured as a a dual 4 channel multiplexer/ demultiplexer designed to operate from a single +2V to +12V supply or from a ±2V to ±6V supply. The device has a latch bar pin to lock in the last switch address. ON resistance of 39Ω with a ±5V supply and 125Ω with a +3. 3V supply. Each switch can handle rail to rail analog signals. The off-leakage current is only 0. 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 3. 3V or +5V supply or dual ±5V supplies.


  • Fully Specified at 3.3V, 5V, ±5V, and 12V Supplies for 10% Tolerances
  • ON Resistance (RON) Max, VS = ±4.5V 50Ω
  • ON Resistance (RON) Max, VS = +3V 155Ω
  • RON Matching Between Channels, VS = ±5V <2Ω
  • Low Charge Injection, VS = ±5V 1pC (Max)
  • Single Supply Operation +2V to +12V
  • Dual Supply Operation ±2V to ±6V
  • Fast Switching Action (VS = +5V)
  • tON 38ns
  • tOFF 19ns
  • Guaranteed Max Off-leakage 2.5nA
  • Guaranteed Break-Before-Make
  • TTL, CMOS Compatible
  • Pb-free available


  • Communications Systems Radios Telecom Infrastructure ADSL, VDSL Modems
  • Test Equipment Medical Ultrasound Magnetic Resonance Image CT and PET Scanners (MRI) ATE Electrocardiograph
  • Audio and Video Signal Routing
  • 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

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Obsolete QFN Tube 75
Obsolete QFN Reel 6000


Title language Type Format File Size Date
Datasheets & Errata
star ISL43840 Datasheet Datasheet PDF 748 KB
User Guides & Manuals
RTKA-BDGSTKEV1Z User Manual Manual - Development Tools PDF 1.21 MB
RTKA-BDGSTKDBEVKIT1Z User's Manual Manual - Development Tools PDF 1.09 MB
RTKA-BDGSTKEV2Z User's Manual Manual - Development Tools PDF 721 KB
Application Notes & White Papers
AN535: Design Considerations for a Data Acquisition System (DAS) Application Note PDF 843 KB
PLC20036 - 2H EOL 2020 Product Life Cycle Notice PDF 319 KB
PCN14011 - Alternate Manufacturing Facilities for Assembly of the Listed Intersil DFN/TDFN/QFN Packaged Products -Carsem (CAS) - Ipoh, Malaysia Product Change Notice PDF 225 KB


Title language Type Format File Size Date
RTKA-BDGSTKDBEVKIT1Z Design Files PCB Design Files ZIP 759 KB
RTKA-BDGSTKEV1Z Design Files PCB Design Files ZIP 4.38 MB
RTKA-BDGSTKEV2Z Design Files PCB Design Files ZIP 569 KB

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RTKA-BDGSTKEV2Z DAQ on a Stick Strain Gauge Kit Evaluation Renesas