IS-705RH Datasheet, PDF (1/2 Pages) Intersil Corporation – Radiation Hardened Power-Up/Down Microprocessor Reset Circuit

Radiation Hardened Power-Up/Down
Microprocessor Reset Circuit
IS-705RH
The Radiation Hardened IS-705RH
is a monolithic device that
TM _{monitors the power supply voltage}
used by satellite control units and
provides a reset output pulse
during power-up and power-down. The reset threshold
is 4.65V (Typ) and the reset pulse width is set at 200ms
(Typ). A watchdog circuit is incorporated for easy
interfacing with microprocessors and controllers. If the
watchdog input has not been toggled within a preset
1.6s (Typ) time period, an output signal is generated,
which can be used as an interrupt. The power function
input (PFI) may be used to monitor other voltage levels.
The circuit has a 1.25V (Typ) threshold and provides a
PFO output when low voltage is detected. An active-low
manual reset input is also provided for direct control of
the reset function.
Constructed with the Intersil UHF2X-CMOS process,
these devices have been specifically designed to provide
highly reliable performance in harsh radiation
environments. This process has been tested for single
event latch-up and has demonstrated an immunity to
90MeV/mg/cm².
Specifications for Rad Hard QML devices are
controlled by the Defense Supply Center in
Columbus (DSCC). The SMD numbers listed here
must be used when ordering.
Detailed Electrical Specifications for these
devices are contained in SMD 5962-00538. A
“hot-link” is provided on our homepage for
downloading.
http://www.dscc.dla.mil/downloads/milspec/s
md/00538.pdf
Features
• Electrically Screened to SMD #5962-00538
• QML Qualified per MIL-PRF-38535 Requirements
• Radiation Hardness
- Total Dose . . . . . . . . . . . . . 100 krad(Si) (Min)
- Single Event Latch-up . . . . . . >90MeV/mg/cm²
• Precision 4.65V Voltage Monitor
• Supply Voltage Range . . . . . . . . . 4.75V to 5.5V
• RESET Valid at V_CC = 1.2V
• Low Supply Current . . . . . . . . . . . . .420µA (Typ)
• 200ms (Typ) RESET Pulse Width
Applications
• Flight Computers
• Controllers
• Critical Microprocessor Power Monitoring
• Reliable Replacement of Discrete Solutions
Pin Configuration
IS-705RH
(8 LD FLATPACK)
TOP VIEW
MR 1
V_CC 2
GND 3
PFI 4
8 WDO
7 RESET
6 WDI
5 PFO
Ordering Information
ORDERING
NUMBER
INTERNAL
MKT. NUMBER
PART
MARKING
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
5962R0053801V9A
IS0-705RH-Q
-55 to +125
DIE
IS0-705RH/SAMPLE IS0-705RH/SAMPLE
-55 to +125
DIE SAMPLE
5962R0053801QXC
(Note)
IS9-705RH-8
Q 5962R00 53801QXC
-55 to +125
8 Ld Flatpack, Solder SL
5962R0053801VXC
(Note)
IS9-705RH-Q
Q 5962R00 53801VXC
-55 to +125
8 Ld Flatpack, Solder SL
IS9-705RH/PROTO
(Note)
IS9-705RH/PROTO
IS9- 705RH /PROTO
-55 to +125
8 Ld Flatpack, Solder SL
NOTE: These Intersil Pb-free Hermetic packaged products employ 100% Au plate - e4 termination finish, which is RoHS compliant
and compatible with both SnPb and Pb-free soldering operations.
March 23, 2010
FN4703.6
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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