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參數(shù)資料
| 型號(hào)： | IMP708JCUA |
| 廠商： | IMP INC. |
| 英文描述： | 3/3.3/4.0V レP SUPERVISOR CIRCUITS |
| 中文描述： | 3/3.3/4.0VレP監(jiān)控電路 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 229K |
| 代理商： | IMP708JCUA |
1999 IMP, Inc.
408-432-9100/www.impweb.com
1
Key Features
Applications
N
Computers and controllers
N
CTI applications
N
Embedded controllers
N
Battery operated systems
N
Intelligent instruments
N
Wireless communication systems
N
PDAs and handheld equipment
N
Lower power, pin compatible replacements for
Maxim MAX706P/R/S/T, MAX708R/S/T
– 30% lower supply current:140μA vs. 200μA
N
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)
N
Debounced manual reset input
N
Auxiliary voltage monitor comparator
– 1.25V threshold
– Battery monitor/auxiliary supply monitor
N
Watchdog timer (IMP706P/R/S/T/J)
– Watchdog can be disabled by floating WDI
N
200ms reset time delay
N
Three reset signal options
– Active HIGH: IMP706P
– Active LOW: IMP706R/S/T/J
– Active HIGH & LOW outputs: IMP708R/S/T/J
N
DIP, SO and MicroSO packages
N
Guaranteed RESET assertion to V
CC
= 1.1V
Block Diagrams
IMP706P/R/S/T/J, IMP708R/S/T/J
P
OWER
M
ANAGEMENT
3/3.3/4.0V
μ
μ
– Lo
w suppl
– W
atc
hdog timer
– Br
o
o
wnout det
P Super
visor Cir
y cur
r
r
ent
cuits
ection
The IMP706P/R/S/T/J and IMP708R/S/T/J CMOS supervisor circuits
monitor power-supply and battery voltage level, and
μ
P/
μ
C 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).
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.
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.
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.
RESET
RESET
V
CC
RESET
Generator
2.63V (IMP708R)
2.93V (IMP708S)
3.08V (IMP708T)
4.00V (IMP708J)
V
CC
+
–
+
MR
IMP708R/S/T/J
PFO
GND
1.25V
–
+
PFI
706P_02.eps
20k
1.25V
–
+
MR
WDI
IMP706P/R/S/T/J
WDO
RESET
(RESET) IMP706P
PFO
GND
V
CC
20k
RESET
Generator
2.63V (IMP706P/R)
2.93V (IMP706S)
3.08V (IMP706T)
4.00V (IMP706J)
V
CC
+
–
+
PFI
Timebase
Watchdog
Timer
Transition
Detector
706P_01.eps
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PDF描述 |
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| IMP708CPA | LOW-POWER レP SUPERVISOR CIRCUITS |
| IMP708CSA | LOW-POWER レP SUPERVISOR CIRCUITS |
| IMP708EPA | LOW-POWER レP SUPERVISOR CIRCUITS |
| IMP708ESA | LOW-POWER レP SUPERVISOR CIRCUITS |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| IMP708JEPA | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:3/3..3/4..0V μP Superrviissorr Ciirrccuiittss |
| IMP708JESA | 制造商:IMP 制造商全稱:IMP 功能描述:3/3.3/4.0V レP SUPERVISOR CIRCUITS |
| IMP708RCPA | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:3/3..3/4..0V μP Superrviissorr Ciirrccuiittss |
| IMP708RCSA | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:3/3..3/4..0V μP Superrviissorr Ciirrccuiittss |
| IMP708RCUA | 制造商:A1PROS 制造商全稱:A1 PROs co., Ltd. 功能描述:3/3..3/4..0V μP Superrviissorr Ciirrccuiittss |
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