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Rad-Hard, 5.0V/3.3V μ-Processor Supervisory Circuits

This family of devices are radiation hardened 5.0V/3.3V supervisory circuits that reducethe 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.

Features

? Electrically Screened to SMD 5962-11213

? QML Qualified per MIL-PRF-38535 Requirements

?Radiation Hardness

- High Dose Rate. . . . . . . . . . . . . . . . . . . . . . . . . . 100krad(Si)

- Low Dose Rate . . . . . . . . . . . . . . . . . . . 100krad(Si) (Note 1)

- SEL/SEB LETTH. . . . . . . . . . . . . . . . . . . . 86MeV * cm2/mg

? Precision Supply Voltage Monitor

- 4.65V Threshold in the ISL705AEH/BEH/CEH

- 3.08V Threshold in the ISL706AEH/BEH/CEH

? 200ms (Typ) Reset Pulse Width

- Active High, Active Low and Open Drain Options

? Independent Watchdog Timer with 1.6s (Typ) Timeout

? Precision Threshold Detector

- 1.25V Threshold in the ISL705AEH/BEH/CEH

- 0.6V Threshold in the ISL706AEH/BEH/CEH

? Debounced TTL/CMOS Compatible Manual-Reset Input

? Reset Output Valid at VDD = 1.2V

Applications

? Supervisor for μ-Processors, μ-Controllers, FPGAs and DSPs

? Critical Power Supply Monitoring

? Reliable Replacement of Discrete Solutions