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5962R1121309V9A

更新时间： 2024-11-24 12:21:59
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英特矽尔 - INTERSIL 监控
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19页 1152K
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Rad-Hard, 5.0V/3.3V μ-Processor Supervisory Circuits

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Rad-Hard, 5.0V/3.3V µ-Processor Supervisory Circuits  
ISL705AEH, ISL705BEH, ISL705CEH, ISL706AEH, ISL706BEH, ISL706CEH  
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.  
Features  
• Electrically Screened to SMD 5962-11213  
• QML Qualified per MIL-PRF-38535 Requirements  
• Radiation Hardness  
1. A reset output during power-up, power-down, and brownout  
conditions.  
- High Dose Rate. . . . . . . . . . . . . . . . . . . . . . . . . . 100krad(Si)  
- Low Dose Rate . . . . . . . . . . . . . . . . . . . 100krad(Si) (Note 1)  
2
2. An independent watchdog output that goes low if the  
watchdog input has not been toggled within 1.6s.  
- SEL/SEB LET . . . . . . . . . . . . . . . . . . . . 86MeV * cm /mg  
TH  
• Precision Supply Voltage Monitor  
3. A precision threshold detector for monitoring a power  
- 4.65V Threshold in the ISL705AEH/BEH/CEH  
- 3.08V Threshold in the ISL706AEH/BEH/CEH  
• 200ms (Typ) Reset Pulse Width  
supply other than V  
.
DD  
4. An active-low manual-reset input.  
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 on page 3  
must be used when ordering.  
- Active High, Active Low and Open Drain Options  
• Independent Watchdog Timer with 1.6s (Typ) Timeout  
• Precision Threshold Detector  
Detailed Electrical Specifications for the ISL705AEH,  
ISL705BEH, ISL705CEH, ISL706AEH, ISL706BEH and  
ISL706CEH are contained in SMD 5962-11213. A “hot-link” is  
also provided on our website for downloading.  
- 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 V = 1.2V  
DD  
Applications  
Related Literature  
• AN1650, “ISL705XRH Evaluation Board User’s Guide”  
• Supervisor for µ-Processors, µ-Controllers, FPGAs and DSPs  
• Critical Power Supply Monitoring  
• Reliable Replacement of Discrete Solutions  
• AN1671, “ISL706xRH Evaluation Board User’s Guide”  
• AN1651, “Single Event Effects (SEE) Testing of the  
ISL705xRH/EH and ISL706xRH/EH Rad Hard Supervisory  
Circuits”  
5V POWER SUPPLY  
1.4  
1.2  
VCC  
ISL705xEH  
ISL706xEH  
1.0  
0.8  
0.6  
0.4  
0.2  
0
1
2
3
4
MR  
VDD  
WDO  
RST  
WDI  
PFO  
8
7
6
5
NMI  
RST  
I/O  
µP  
165k  
GND  
PFI  
49.9k  
ISL705AEH  
0
25  
50  
75  
100  
125  
150  
5V SUPERVISOR APPLICATION WITH OVERVOLTAGE PROTECTION  
FIGURE 1. TYPICAL APPLICATION  
krad (Si)  
FIGURE 2. PRECISION THRESHOLD DETECTOR LOW DOSE  
IONIZING CHARACTERISTIC CURVE  
NOTE:  
1. Product capability established by initial characterization. The EH version is acceptance tested on a wafer by wafer basis to 50krad(Si) at low dose rate.  
March 30, 2012  
FN8262.0  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2012. 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.  
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