The devices in this family are radiation hardened 5.0V/3.3V supervisory circuits that reduce the complexity required to monitor supply voltages in microprocessor systems. These devices significantly improve accuracy and reliability relative to discrete solutions. Each IC provides four key functions: A reset output during power-up, power-down and brownout conditions, an independent watchdog output that goes low if the watchdog input has not been toggled within 1.6s, a precision threshold detector for monitoring a power supply other than VDD, and an active-low, manual-reset input.


  • Electrically screened to SMD 5962-11213
  • QML qualified per MIL-PRF-38535 requirements
  • Radiation acceptance testing - ISL705xRH, ISL706xRH
    • High dose rate: 100krad(Si)
  • SEE hardness (see SEE report for details)
    • SEL/SEB LETTH: 86MeV•cm2/mg
  • Precision supply voltage monitor
    • 3.08V threshold in the ISL7x6AxH/BxH/CxH
  • 200ms (typical) reset pulse width
    • Active high, active low, and open-drain options
  • Independent watchdog timer with 1.6s (typical) timeout
  • Precision threshold detector
    • 0.6V threshold in the ISL7x6AxH/BxH/CxH
  • Debounced TTL/CMOS compatible manual-reset input
  • Reset output valid at VDD = 1.2V


  • Supervisor for microprocessors, microcontrollers, FPGAs, and DSPs
  • Critical power supply monitoring
  • Reliable replacement of discrete solutions


Title language Type Format File Size Date
star ISL705xRH, ISL705xEH, ISL706xRH, ISL706xEH, ISL735xEH, ISL736xEH Datasheet Datasheet PDF 977 KB
AN1710: ISL705xRH and IS706xRH SPICE Model Application Note PDF 271 KB
AN9867: End of Life Derating: A Necessity or Overkill Application Note PDF 338 KB
Intersil Space Products Brochure Brochure PDF 3.16 MB
Intersil Commercial Lab Services Brochure PDF 364 KB
ISL706xRHEVAL1Z User Guide Manual - Development Tools PDF 368 KB
VIRTEX5MEZPWREV1Z User Guide Manual - Development Tools PDF 1.32 MB
Standard Microcircuit Drawing 5962-11213 (ISL705AEH, ISL705ARH, ISL705BEH, ISL705BRH, ISL705CEH, ISL705CRH, ISL706AEH, ISL706ARH, ISL706BEH, ISL706BRH, ISL706CEH, ISL706CRH) Other 0 KB
PIN19011 - Price Increase for the Listed Renesas Electronics America (REA) Radiation Hardened Space Products Price Increase Notice PDF 360 KB
ISL706xRH, ISL706xEH, ISL736xEH Total Dose Test Report Report PDF 260 KB
ISL705AEH Neutron Test Report Report PDF 279 KB
ISL705xRH/EH and ISL706xRH/EH SEE Test Report Report PDF 1.62 MB
Wafer by Wafer Low Dose Rate Acceptance White Paper White Paper PDF 533 KB


Title language Type Format File Size Date
isl705xrh_isl706xrh_spice_files Model - Other ZIP 726 KB

memoryBoards & Kits

Part Number Title Type Company
ISL706xRHEVAL1Z Radiation Hardened, 3.3V Microprocessor Supervisory Circuits Evaluation Board Evaluation Renesas

printNews & Additional Resources

Type Date Sort ascending
Low Dose Rate Acceptance Testing Page Mar 26, 2020
Standard Data Package Page Mar 20, 2020
Rad Hard SMD Test Flow Page Mar 20, 2020
Rad Hard Test Reports Page Mar 20, 2020