The Intersil ISL84581 device contains precision, bidirectional, analog switches configured as an 8-to-1 multiplexer/demultiplexer. It was designed to operate from a single +2V to +12V single supply or from dual ±2V to ±6V supplies. The device has an inhibit pin to simultaneously open all signal paths. The ISL84581 has an ON-resistance of 39Ω with a dual ±5V supply and 125Ω with a single +3. 3V supply. Each switch can handle rail-to-rail analog signals. The off-leakage current is only 0. 02nA at +25°C or 0. 2nA 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. The ISL84581 is a single 8-to-1 multiplexer device.


  • 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 (RoHS Compliant)


  • Battery Powered, Handheld, and Portable Equipment
  • 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

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QSOP Tube 980
Active QSOP Reel 2500
Active TSSOP Tube 960
Active TSSOP Reel 2500

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL84581 Datasheet Datasheet PDF 877 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
AN520: CMOS Analog Multiplexers and Switches; Specifications and Application Considerations Application Note PDF 270 KB
AN1034: CMOS Analog Multiplexers and Switches, Applications Considerations Application Note PDF 300 KB
PCN21006 - Alternate assembly facility of the listed Renesas TSSOP packaged products Product Change Notice PDF 131 KB
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP) Product Change Notice PDF 98 KB
TB363: Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs) Other PDF 293 KB