Overview: Datasheet
ISL705xRH, ISL705xEH, ISL706xRH, ISL706xEH, ISL735xEH, ISL736xEH
Radiation Hardened, 5.0V/3.3V µ-Processor Supervisory Circuits The devices in this family (ISL705AEH, ISL705BEH, ISL705CEH, ISL705ARH, ISL705BRH, ISL705CRH, ISL706AEH, ISL706BEH, ISL706CEH, ISL706ARH, ISL706BRH, ISL706CRH, ISL735AEH, ISL735BEH, ISL735CEH, ISL736AEH, ISL736BEH, ISL736CEH) 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.
▪ An active-low, manual-reset input.
Applications
▪ Supervisor for µ-processors, µ-controllers, FPGAs, and DSPs
▪ Critical power supply monitoring
▪ Reliable replacement of discrete solutions 5V Power Supply 165k 49.9k 1 MR 2 VDD 3 GND 4 PFI WDO 8 RST 7 WDI 6 PFO 5 VCC NMI RST µP I/O ISL7X5AxH 5V Supervisor Application with Overvoltage Protection Figure 1. Typical Application FN7662 Rev.6.
