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Intersil ISL705ARH Datasheet

Radiation hardened, 5.0v/3.3v mu-processor supervisory circuits
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Radiation Hardened, 5.0V/3.3V µ-Processor
Supervisory Circuits
ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH,
ISL706CRH
This family of devices 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.
1. A reset output during power-up, power-down and brownout
conditions.
2. An independent watchdog output that goes low if the
watchdog input has not been toggled within 1.6s.
3. A precision threshold detector for monitoring a power
supply other than V
.
DD
4. 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
Related Literature
•
AN1650
"ISL705XRH Evaluation Board User's Guide"
•
AN1671
"ISL706xRH Evaluation Board User Guide"
•
AN1651
"Single Event Effects (SEE) Testing of the
ISL705xRH/EH and ISL706xRH/EH Rad Hard Supervisory
Circuits"
•
"Total Dose Testing of the ISL706ARH Radiation Hardened
Microprocessor Supervisory Circuit"
•
AN1710
"ISL705xRH and IS706xRH SPICE Model"
5V POWER SUPPLY
1
MR
WDO
8
2
V
RST
7
DD
165k
3
GND
WDI
6
4
PFI
5
PFO
49.9k
ISL705ARH
5V SUPERVISOR APPLICATION WITH OVERVOLTAGE PROTECTION
FIGURE 1. TYPICAL APPLICATION
February 10, 2015
FN7662.3
V
CC
NMI
RST
µP
I/O
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
Features
• Electrically screened to SMD
• QML qualified per MIL-PRF-38535 requirements
• Radiation hardness
- High dose rate . . . . . . . . . . . . . . . . . . . . . . . . . . 100krad(Si)
- SEL/SEB LET
. . . . . . . . . . . . . . . . . . . . . . 86MeV/mg/cm
TH
• Precision supply voltage monitor
- 4.65V threshold in the ISL705ARH/BRH/CRH
- 3.08V threshold in the ISL706ARH/BRH/CRH
• 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 ISL705ARH/BRH/CRH
- 0.6V threshold in the ISL706ARH/BRH/CRH
• Debounced TTL/CMOS compatible manual-reset input
• Reset output valid at V
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
-80
-60
-40
-20
FIGURE 2. PRECISION THRESHOLD DETECTOR TEMPERATURE
CHARACTERISTICS CURVE
|
Copyright Intersil Americas LLC 2011, 2014, 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
DATASHEET
5962-11213
= 1.2V
DD
ISL705xRH
ISL706xRH
0
20
40
60
80
100 120 140
TEMPERATURE (°C)
2

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Summary of Contents for Intersil ISL705ARH

  • Page 1 1-888-INTERSIL or 1-888-468-3774 Copyright Intersil Americas LLC 2011, 2014, 2015. All Rights Reserved FN7662.3 Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners.

  • Page 2: Ordering Information

    1. Specifications for Rad Hard QML devices are controlled by the Defense Logistics Agency Land and Maritime (DLA). The SMD numbers listed in the “Ordering Information” table must be used when ordering. 2. 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.

  • Page 3: Pin Configurations

    1.2V. As V rises, RST stays low. When V rises above a 4.65V (ISL705ARH/BRH/CRH) or 3.08V (ISL706ARH/BRH/CRH) reset threshold, an internal timer releases RST after about 200ms. RST pulses low whenever V goes below the reset threshold. If a brownout condition occurs in the middle of a previously initiated reset pulse, the pulse will continue for at least 140ms.

  • Page 4: Functional Block Diagrams

    ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH, ISL706CRH Functional Block Diagrams RST_OD ISL705ARH, ISL706ARH ISL705BRH, ISL706BRH ISL705CRH, ISL706CRH Timing Diagrams 1.2V >t <t FIGURE 3. RST, RST, MR AND WDO TIMING DIAGRAM 1.2V < t < t < t >t FIGURE 4. WATCHDOG TIMING DIAGRAM Submit Document Feedback FN7662.3...

  • Page 5: Absolute Maximum Ratings

    Supply Voltage ISL705ARH/BRH/CRH ......4.75V to 5.5V ISL706ARH/BRH/CRH ......3.15V to 3.6V CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time.
  • Page 6 ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH, ISL706CRH Electrical Specifications Unless otherwise specified V = 4.75V to 5.5V for the ISL705ARH/BRH/CRH, V = 3.15V to 3.6V for the ISL706ARH/BRH/CRH T = -55°C to +125°C. Boldface limits apply across the ambient operating temperature range, -55°C to +125°C. (Continued)
  • Page 7 ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH, ISL706CRH Post Radiation Characteristics Unless otherwise specified, V = 4.75V to 5.5V for the ISL705ARH/BRH/CRH, V = 3.15V to 3.6V for the ISL706ARH/BRH/CRH T = +25°C. This data is parameter deltas post radiation exposure at a rate of 50 to 300rad(Si)/s. This data is intended to show typical parameter shifts due to high dose radiation.
  • Page 8 ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH, ISL706CRH Typical Performance Curves ISL705xRH ISL705xRH ISL706xRH ISL706xRH 100 120 140 100 120 140 TEMPERATURE (°C) TEMPERATURE (°C) FIGURE 5. I vs TEMPERATURE FIGURE 6. V vs TEMPERATURE ISL705xRH ISL706xRH 100 120 140 TEMPERATURE (°C) FIGURE 7.
  • Page 9 ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH, ISL706CRH Typical Performance Curves (Continued) FIGURE 11. ISL706xRH RESET AND RESET DEASSERTION FIGURE 12. ISL705xRH PFI TO PFO RESPONSE FIGURE 13. ISL706xRH PFI TO PFO RESPONSE Submit Document Feedback FN7662.3 February 10, 2015...

  • Page 10: Functional Overview

    ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH, ISL706CRH Functional Overview The ISL705xRH and ISL706xRH provide the functions needed for monitoring critical voltages in high reliability applications such as microprocessor systems. Functions of the these supervisors include ISL705xRH/ISL706xRH power-on reset control; supply voltage supervisions; power-fail detection;...
  • Page 11 MR ensures no false reset triggering when the negative RST_OD pin. The ISL705ARH has a sink capability of 3.2mA and voltage is within its regulation window.
  • Page 12 ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH, ISL706CRH Adding Hysteresis to the PFI Comparator The rising threshold voltage is selected at 3.0V and R2 is calculated by Equation The PFI comparator has no built-in hysteresis, however, the     ...
  • Page 13 ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH, ISL706CRH Weight Characteristics BACKSIDE FINISH Silicon Weight of Packaged Device PROCESS 0.31 Grams typical 0.6µM BiCMOS Junction Isolated Die Characteristics ASSEMBLY RELATED INFORMATION Die Dimensions Substrate Potential 2030µm x 2030µm (79.9 mils x 79.9 mils) Unbiased Thickness: 483µm ±25.4µm (19.0 mils ±1 mil)

  • Page 14: Revision History

    Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use.
  • Page 15 ISL705ARH, ISL705BRH, ISL705CRH, ISL706ARH, ISL706BRH, ISL706CRH Package Outline Drawing K8.A 8 LEAD CERAMIC METAL SEAL FLATPACK PACKAGE Rev 4, 12/14 PIN NO. 1 0.015 (0.38) ID OPTIONAL 0.008 (0.20) 0.050 (1.27 BSC) 0.005 (0.13) 0.265 (6.73) PIN NO. 1 0.245 (6.22) ID AREA 0.022 (0.56)
  • Page 16 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Intersil ISL706XRHEVAL1Z...

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