The Intersil ISL43140-ISL43142 devices are CMOS, precision, quad analog switches designed to operate from a single +2V to +12V supply or from a ±2V to ±6V supply. Targeted applications include battery powered equipment that benefit from the devices' low power consumption (1µW), low leakage currents (1nA max), and fast switching speeds (tON = 30ns, tOFF = 18ns). A 12Ω maximum RON flatness ensures signal fidelity, while channel-to-channel mismatch is guaranteed to be less than 2. 5Ω. The 3mm x 3mm Quad No- Lead Flatpack (QFN) package alleviates board space limitations, making this newest line of low-voltage switches an ideal solution. The ISL43140/ISL43141/ISL43142 are quad single-pole/ single-throw (SPST) devices. The ISL43140 has four normally closed (NC) switches; the ISL43141 has four normally open (NO) switches; the ISL43142 has two NO and two NC switches and can be used as a dual SPDT, or a dual 2:1 multiplexer.


  • Fully Specified at ±5V, 12V, 5V, and 3V Supplies for 10% Tolerances
  • Four Separately Controlled SPST Switches
  • Pin Compatible with DG411/DG412/DG413
  • ON Resistance (RON) 50Ω
  • RON Matching Between Channels 2Ω
  • Low Charge Injection 5pC (Max)
  • Low Power Consumption (PD) <1µW
  • Low Leakage Current (Max at 85°C) 5nA
  • Fast Switching Action
  • tON 30ns
  • tOFF 18ns
  • Guaranteed Break-Before-Make (ISL43142 only)
  • Minimum 2000V ESD Protection per Method 3015.7
  • TTL, CMOS Compatible
  • Pb-free Available


  • Battery Powered, Handheld, and Portable Equipment Cellular/Mobile Phones Pagers Laptops, Notebooks, Palmtops
  • Communications Systems Military Radios RF "Tee" Switches
  • Test Equipment Ultrasound Electrocardiograph
  • Heads-Up Displays
  • Audio and Video Switching
  • General Purpose Circuits +3V/+5V DACs and ADCs Digital Filters Operational Amplifier Gain Switching Networks High Frequency Analog Switching High Speed Multiplexing

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOICN Tube 960
Active SOICN Reel 2500
Active QFN Tube 100
Active QFN Reel 6000
Active TSSOP Tube 1920
Active TSSOP Reel 2500


Title language Type Format File Size Date
Datasheets & Errata
ISL43140, ISL43141, ISL43142 Datasheet Datasheet PDF 1.07 MB
Application Notes & White Papers
AN535: Design Considerations for a Data Acquisition System (DAS) Application Note PDF 843 KB
PCN16043 - Alternate leadframe material for assembly of the listed Intersil TSSOP packaged products Product Change Notice PDF 78 KB
PCN12094 - Alternate Manufacturing Site for Assembly of the Listed Intersil Packaged Products - Amkor Technology, Philippines (ATP) Product Change Notice PDF 98 KB
PCN12085 - 8l, 14l, 16l SOIC w/ Gold Bond Wire @ ATP as Alternate Assembly Site Product Change Notice PDF 152 KB
PLC14003 - Product Discontinuance / Obsolescence Notification Product Life Cycle Notice PDF 179 KB