The Intersil ISL54050 device is a low ON-resistance, low voltage, bidirectional, dual single-pole/double-throw (SPDT) analog switch designed to operate from a single +1. 65V to +4. 5V supply. Targeted applications include battery powered equipment that benefit from low rON (0. 29Ω) and fast switching speeds (tON = 40ns, tOFF = 20ns). The digital logic input is 1. 8V logic-compatible when using a single +3V supply. 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 part may be used to mux-in additional functionality while reducing ASIC design risk. The ISL54050 is offered in small form factor package, alleviating board space limitations. The ISL54050 is a committed dual single-pole/double-throw (SPDT) that consists of two normally open (NO) and two normally closed (NC) switches. This configuration can be used as a dual 2-to-1 multiplexer. The ISL54050 is pin compatible with the NLAS5223 and NLAS5223L.


  • Pin Compatible Replacement for the NLAS5223 and NLAS5223L
  • ON-Resistance (rON)
  • V+ = +4.3V 0.29Ω
  • V+ = +3.0V 0.33Ω
  • V+ = +1.8V 0.55Ω
  • rON Matching Between Channels 0.06Ω
  • rON Flatness Across Signal Range 0.03Ω
  • Single Supply Operation +1.65V to +4.5V
  • Low Power Consumption (PD) <0.45µW
  • Fast Switching Action (V+ = +4.3V)
  • tON 40ns
  • tOFF 20ns
  • ESD HBM Rating >8kV
  • Break-before-Make
  • 1.8V Logic Compatible (+3V supply)
  • Low ICC Current when VinH is not at the V+ Rail
  • Available in 10 Ld 1.8mmx1.4mmx0.5mm µTQFN
  • Pb-Free (RoHS Compliant)


  • Battery powered, Handheld, and Portable Equipment Cellular/mobile Phones Pagers Laptops, Notebooks, Palmtops
  • Portable Test and Measurement
  • Medical Equipment
  • Audio and Video Switching

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active uTQFN Reel 3000
Active uTQFN Reel 250

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL54050 Datasheet Datasheet PDF 600 KB
Application Notes & White Papers
AN557: Recommended Test Procedures for Analog Switches Application Note PDF 468 KB
PCN10114 - Part Marking Configuration Change for Intersil TDFN, uTDFN, and uTQFN Packaged Products Product Change Notice PDF 205 KB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB
TB363: Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices (SMDs) Other PDF 293 KB