Overview

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.

ISL705xxH_ISL706xxH Functional Diagram
ISL705xxH_ISL706xxH Functional Diagram
  • Electrically screened to SMD 5962-11213
  • QML qualified per MIL-PRF-38535 requirements
  • TID Rad Hard Assurance (RHA) testing
    • High dose rate (50rad(Si)/s - 300rad(Si)/s): 100krad(Si)
    • Low dose rate (0.01rad(Si)/s): 50krad(Si)
  • SEE hardness (see SEE report for details)
    • No DSEE for VDD = 6.5V and 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

Applications

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

Documentation

Design & Development

Software Downloads
Type Title Date
PCB Design Files
ISL705xRHEVAL1Z Design Files
ZIP 253 KB
1 item
ISL705XRHEVAL1Z Rad Hard Supervisory IC Eval Board

ISL705XRHEVAL1Z

Evaluation
Learn More

Radiation Hardened, 5.0V Microprocessor Supervisory Circuit Evaluation Board

The ISL705XRHEVAL1Z evaluation board is a design platform featuring the ISL705ARH, ISL705BRH and ISL705CRH 5V supervisory circuits. It includes all the circuitry needed...

Featured Documents:
ISL705XRHEVAL1Z User Guide

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models
Diagram of ECAD Models

Product Options

    Processing table
    Pkg. Type
    Carrier Type
    MOQ
    DLA SMD
    Buy / Sample
    Part Number
    ISL705AEHVF
    circleActive
    memory
    view_in_ar
    		CFP Tray 25 5962R1121307V9A
    ISL705AEHVX
    circleActive
    memory
    view_in_ar
    		DIE 100 5962R1121307VXC
    Parametric Table tips

    Tips for Using This Parametric Table:

    • Hide Filters button in header: Collapse or expands filters
    • Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
    • Reset button in header: Reset all filters to the page default
    • Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
    • Export button in header: Export the filtered results of the table to an Excel document
    • Filter parts search bar in header: Type to filter table results by part number
    • Hide column button in column headers: Select to hide columns in table
    • AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
    • Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
    • Document icon next to product name in row: View the featured document for this product
    • Chip icon next to the right of the document icon in row: View the block diagram for this product
    • Cart icon to the right of the chip icon: Indicates that samples are available for this product