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IMP708TESA PDF预览

IMP708TESA

更新时间: 2024-10-28 05:39:19
品牌 Logo 应用领域
A1PROS 光电二极管
页数 文件大小 规格书
9页 278K
描述
3/3..3/4..0V μP Superrviissorr Ciirrccuiittss

IMP708TESA 技术参数

生命周期:Contact Manufacturer包装说明:,
Reach Compliance Code:unknown风险等级:5.69
Base Number Matches:1

IMP708TESA 数据手册

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IMP706P/R/S/T/J, IMP708R/S/T/J  
P
OWER  
M
ANAGEMENT  
Key Features  
3/3.3/4.0V µP Supervisor Circuits  
– Low supply current  
– Watchdog timer  
– Brownout detection  
The IMP706P/R/S/T/J and IMP708R/S/T/J CMOS supervisor circuits  
monitor power-supply and battery voltage level, and µP/µC operation.  
A reset is generated when the supply drops below 2.63V (IMP706P/R,  
IMP708R), 2.93V (IMP706S, IMP708S), 3.08V (IMP706T, IMP708T) or 4.00  
(IMP706J, IMP708J).  
Lower power, pin compatible replacements for  
Maxim MAX706P/R/S/T, MAX708R/S/T  
– 30% lower supply current:140µA vs. 200µA  
Precision power supply monitor  
– 2.63V threshold (IMP706P/R, IMP708R)  
– 2.93V threshold (IMP706S, IMP708S)  
– 3.08V threshold (IMP706T, IMP708T)  
– New 4.00V threshold (IMP706J, IMP708J)  
Debounced manual reset input  
Auxiliary voltage monitor comparator  
– 1.25V threshold  
– Battery monitor/auxiliary supply monitor  
Watchdog timer (IMP706P/R/S/T/J)  
– Watchdog can be disabled by floating WDI  
200ms reset time delay  
The family offers several functional options. Each device generates a  
reset signal during power-up, power-down and during brownout  
conditions.  
In addition, the IMP706P/R/S/T/J feature a 1.6 second watchdog timer.  
The watchdog timer output will trigger a reset if connected to MR.  
Unlike competitive devices, floating the WDI input pin disables the  
watchdog timer.  
Three reset signal options  
– Active HIGH: IMP706P  
– Active LOW: IMP706R/S/T/J  
– Active HIGH & LOW outputs: IMP708R/S/T/J  
DIP, SO and MicroSO packages  
Guaranteed RESET assertion to VCC = 1.1V  
The IMP708R/S/T/J have both active-HIGH and active-LOW reset out-  
puts but no watchdog function. The IMP706P has the same pin-out and  
functions as the IMP706R but has an active-HIGH reset output.  
A versatile power-fail circuit, useful in checking battery levels and  
non-5V supplies, has a 1.25V threshold. All devices have a manual  
reset input.  
Applications  
All devices are available in 8-pin DIP, SO and the compact MicroSO  
packages. The MicroSO package requires 50% less PC board area than  
the conventional SO package.  
Computers and controllers  
CTI applications  
Embedded controllers  
Battery operated systems  
Intelligent instruments  
Wireless communication systems  
PDAs and handheld equipment  
Block Diagrams  
Transition  
Detector  
Watchdog  
Timer  
WDI  
WDO  
RESET  
RESET  
VCC  
20k  
VCC  
Timebase  
20kΩ  
RESET  
Generator  
MR  
MR  
RESET  
(RESET) IMP706P  
RESET  
Generator  
+
+
VCC  
VCC  
+
+
2.63V (IMP706P/R)  
2.93V (IMP706S)  
3.08V (IMP706T)  
4.00V (IMP706J)  
2.63V (IMP708R)  
2.93V (IMP708S)  
3.08V (IMP708T)  
4.00V (IMP708J)  
+
PFI  
+
PFI  
PFO  
PFO  
1.25V  
1.25V  
IMP708R/S/T/J  
IMP706P/R/S/T/J  
706P_02.eps  
706P_01.eps  
GND  
GND  
©
1999 IMP, Inc.  
408-432-9100/www.impweb.com  
1

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