The ISL71841SEH is a radiation hardened, 32-channel high ESD protected multiplexer fabricated using the Renesas proprietary P6SOI (Silicon On Insulator) process technology to mitigate single event effects. It operates with a dual supply voltage ranging from ±10. 8V to ±16. 5V. It has a 5-bit address plus an enable pin that can be driven with adjustable logic thresholds to conveniently select one of 32 available channels. An inactive channel is separated from an active channel by a high impedance, which inhibits any interaction between them. The ISL71841SEH’s low rON allows for improved signal integrity and reduced power losses. The ISL71841SEH is also designed for cold sparing, making it excellent for high reliability applications that have redundancy requirements. It is designed to provide a high impedance to the analog source in a powered off condition, making it easy to add additional backup devices without loading signal sources. The ISL71841SEH also incorporates input analog overvoltage protection, which disables the switch to protect downstream devices. The ISL71841SEH is available in a 48 Ld CQFP, 44 Ld CLCC, or die form and operates across the extended temperature range of -55°C to +125°C. A 16-channel version in a 28 Ld CDFP is also available. Refer to the ISL71840SEH datasheet for more information.


  • DLA SMD# 5962-15220
  • Fabricated using P6SOI process technology
  • Provides latch-up immunity
  • ESD protection 8kV (HBM)
  • Rail-to-rail operation
  • Overvoltage protection
  • Low rON: <500Ω (typical)
  • Flexible split rail operation
  • Positive supply above GND (V+): +10.8V to +16.5V
  • Negative supply below GND (V-): -10.8V to -16.5V
  • Adjustable logic threshold control with VREF pin
  • Cold sparing capable (from ground): ±25V
  • Analog overvoltage range (from ground): ±35V
  • Off switch leakage: 100nA (maximum)
  • Transition times (tR, tF): 500ns (typical)
  • Break-before-make switching
  • Grounded metal lid (internally connected)
  • Operating temperature range: -55°C to +125°C
  • Radiation tolerance
    • High dose rate (50-300rad(Si)/s): 100krad(Si)
    • Low dose rate (0.01rad(Si)/s): 100krad(Si) (see Note)
    • SEB LETTH: 86.4MeV•cm2/mg
      NOTE: Product capability established by initial characterization. All subsequent lots are assurance tested to 50krad (0.01rad(Si)/s) wafer-by-wafer.

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active Tray 1
Active Tube 1
Active Tray 45
Active Tube 45
Active 100

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL71841SEH Datasheet Datasheet PDF 1.00 MB
User Guides & Manuals
ISL71841SEHEV1Z User Guide Manual PDF 523 KB
Application Notes & White Papers
How to Reduce SWaP of Satellite Command and Telemetry Subsystems White Paper PDF 352 KB
Achieving Satellite Mission Assurance with Rad Hard Multiplexers White Paper PDF 438 KB
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
isl71840seh-isl71841seh_pspice_model Model ZIP 9 KB
Intersil Space Products Brochure Brochure PDF 3.14 MB
R34ZZ0001: ISL7184xSEH Output Capacitance Considerations Other PDF 2.67 MB
Standard Microcircuit Drawing 5962-15220 (ISL71841SEH, ISL73841SEH) Other 0 KB
TB517: Digital Pin Voltage Range for the Next Generation Muxes Other PDF 187 KB
ISL71841SEHEV1Z Design Files Design File ZIP 563 KB
Intersil Commercial Lab Services Brochure PDF 364 KB
ISL71841SEH SEE Test Report Report PDF 1.54 MB
ISL71841SEH Total Dose Test Report Report PDF 688 KB

Boards & Kits

Part Number Title Type Company
ISL71840SEHEV1Z Radiation Hardened 16 and 32-Channel Analog Multiplexer Evaluation Board Evaluation
ISL71841SEHEV1Z Radiation Hardened 16 and 32-Channel Analog Multiplexer Evaluation Board Evaluation