The ISL84544 is a precision, dual analog switch designed to operate from a single +2. 7V to +12V supply. Targeted applications include battery-powered equipment that benefit from the devices' low power consumption (5µW), low leakage currents (100pA max), and fast switching speeds (tON = 35ns, tOFF = 25ns). Cell phones, for example, often face ASIC functionality limitations. The number of analog input or GPIO pins may be limited and digital geometries are not well suited to analog switch performance. This family of parts may be used to mux-in additional functionality while reducing ASIC design risk. Some of the smallest packages are available, alleviating board space limitations. The ISL84544 is a committed SPDT, which is perfect for use in 2-to-1 multiplexer applications.


  • Drop-in Replacements for MAX4544
  • Fully Specified at 3.3V and 5V Supplies
  • Pin Compatible with MAX323
  • ON-Resistance (RON) 30Ω
  • RON Matching Between Channels <1Ω
  • Low Charge Injection 5pC (Max)
  • Single Supply Operation +2.7V to +12V
  • Low Power Consumption (PD) <5µW
  • Low Leakage Current (Max at 85°C) 10nA
  • Fast Switching Action
  • tON 35ns
  • tOFF 25ns
  • Guaranteed Break-Before-Make
  • Minimum 2000V ESD Protection per Method 3015.7
  • TTL, CMOS Compatible
  • Available in SOIC and SOT-23 Packaging


  • Battery Powered, Handheld, and Portable Equipment Cellular/Mobile Phones Pagers Laptops, Notebooks, Palmtops
  • Communications Systems Military Radios PBX, PABX
  • Test Equipment Ultrasound Electrocardiograph
  • Heads-Up Displays
  • Audio and Video Switching
  • Various 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 SOICN Tube 980
Active SOICN Reel 2500
Active SOT23 Reel 3000

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL84541, ISL84544 Datasheet Datasheet PDF 813 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
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