Space & Harsh Environment

概览

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 - ISL705xEH, ISL706xEH
    • High dose rate: 100krad(Si)
    • Low dose rate: 50krad(Si)
  • SEE hardness (see SEE report for details)
    • SEL/SEB LETTH: 86MeV•cm2/mg
  • Precision supply voltage monitor
    • 4.65V threshold in the ISL7x5AxH/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
    • 1.25V threshold in the ISL7x5AxH/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

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