Intersil's Satellite Applications Flow™ (SAF) devices are tested and guaranteed to 100kRAD Total Dose. These QML Class T devices are processed to a standard flow intended to meet the cost and shorter lead-time needs of large volume satellite manufacturers, while maintaining a high level of reliability. The HS-1840ARH-T is a Radiation Hardened, monolithic channel multiplexer constructed with the Intersil Rad-Hard Silicon Gate, Dielectric Isolation process. It is designed provide a high input impedance to the analog source if device power fails (open), or the analog signal voltage inadvertently exceeds the supply by up to ±35V, regardless of whether the device is powered on or off. Selection of of sixteen channels is controlled by a 4-bit binary address plus an Enable-Inhibit input, which conveniently controls ON/OFF operation of several multiplexers in a system. All inputs have electrostatic discharge protection.


  • QML Class T, Per MIL-PRF-38535
  • Radiation Performance
  • Gamma Dose 1 x 105 RAD(Si)
  • No Latch-Up, Dielectrically Isolated Device Islands
  • Improved rDS(ON) Linearity
  • Improved Access Time 1.5µs (Max) Over Temp and Rad
  • High Analog Input Impedance 500M± During Power Loss (Open)
  • ±35V Input Over Voltage Protection (Power On or Off)
  • Excellent in Hi-Rel Redundant Systems
  • Break-Before-Make Switching

Product Options

Orderable Part ID Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active 450

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
HS-1840ARH-T Datasheet Datasheet PDF 230 KB
Application Notes & White Papers
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
PCN15036 - Part Marking Change for the Listed Intersil HSx-1840xxH / DLA SMD 5962-95630 Products Product Change Notice PDF 278 KB
hs1840_release Model ZIP 59 KB
Intersil Space Products Brochure Brochure PDF 3.14 MB
Intersil Commercial Lab Services Brochure PDF 364 KB
TB402: Avoiding Excessive Supply Current in the HS-1840ARH During Start-Up Other PDF 155 KB