The Intersil ISL84781 device contains precision, bidirectional, analog switches configured as an 8-channel multiplexer/demultiplexer. It is designed to operate from a single +1. 6V to +3. 6V supply. The device has an inhibit pin to simultaneously open all signal paths. ON-resistance is 0. 4Ω with a +3. 0V supply and 0. 55Ω with a single +1. 8V supply. Each switch can handle rail-to-rail analog signals. The off-leakage current is only 4nA max at +25°C or 40nA max at +85°C with a +3. 3V supply. All digital inputs are 1. 8V logic-compatible when using a single +3V supply. The ISL84781 is a 8-to-1 multiplexer device that is offered in a 16 Ld TSSOP package, and a 16 Ld thin QFN package.


  • Pin Compatible Replacement for the MAX4781, and MAX4617
  • ON-resistance (rON)
  • V+ = +3.0V: 0.4Ω
  • V+ = +1.8V: 0.55Ω
  • rON Matching Between Channels: 0.12Ω
  • rON Flatness Across Signal Range: 0.056Ω
  • Single Supply Operation: +1.6V to +3.6V
  • Low Power Consumption (PD): <0.2µW
  • Fast Switching Action (VS = +3V)
  • tON: 16ns
  • tOFF: 13ns
  • Guaranteed Break-Before-Make
  • High Current Handling Capacity (300mA Continuous)
  • Available in 16 Ld TSSOP and 16 Ld 3x3 Thin QFN
  • 1.8V CMOS-Logic Compatible (+3V Supply)
  • Pb-Free (RoHS Compliant)
  • ISL84781IR Replaces the ISL43L680IR.


  • Battery Powered, Handheld, and Portable Equipment Cellular/Mobile Phones Pagers Laptops, Notebooks, Palmtops
  • Portable Test and Measurement
  • Medical Equipment
  • Audio Switching and Routing

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active TQFN Tube 100
Active TQFN Reel 6000
Active TSSOP Tube 960
Active TSSOP Reel 2500
Active TSSOP Reel 250

Documentation & Downloads