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IMP811JEUS-T Datasheet

  • IMP811JEUS-T

  • 4-pin レP Voltage Supervisor with Manual Reset

  • 8頁(yè)

  • IMP

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IMP8 1 1 , IMP8 1 2
P
OWER
M
ANAGEMENT
4-Pin 碌 P Volt ag e Super visor
wit h Manual R eset
The IMP811/IMP812 are low-power supervisors designed to monitor
voltage levels of 3.0V, 3.3V and 5.0V power supplies in low-power
microprocessor (碌P), microcontroller (碌C) and digital systems. Each fea-
tures a debounced manual reset input. The IMP811/812 are improved
drop-in replacements for the Maxim MAX811/812 with extended
temperature specifications to 105擄C.
A reset signal is issued if the power supply voltage drops below a preset
threshold and is asserted for at least 140ms after the supply has risen
above the reset threshold. The IMP811 has an active-low output RESET
that is guaranteed to be in the correct state for V
CC
down to 1.1V. The
IMP812 has an active-high output RESET. The reset comparator is
designed to ignore fast transients on V
CC
.
Low power consumption makes the IMP811/IMP812 ideal for use in
portable and battery-operated equipment. Available in a compact 4-pin
SOT143 package, the devices use minimal board space.
Six voltage thresholds are available to support 3V to 5V systems:
Key Features
N
Improved Maxim MAX811/MAX812 replacement
鈥?/div>
Specified to 105擄C
鈥?/div>
New 4.0V threshold option
N
6碌A(chǔ) supply current
N
Monitor 5V, 3.3V and 3V supplies
N
Manual reset input
N
140ms min. reset pulse width
N
Guaranteed over temperature
N
Active-LOW reset valid with 1.1V supply
(IMP811)
N
Small 4-pin SOT-143 package
N
No external components
N
Power-supply transient-immune design
Reset Threshold
Suffix
Voltage (V)
L
M
J
T
S
R
4.63
4.38
4.00
3.08
2.93
2.63
Applications
N
N
N
N
N
N
Computers and controllers
Embedded controllers
Battery operated systems
Intelligent instruments
Wireless communication systems
PDAs and handheld equipment
Block Diagrams
VCC
VCC
IMP811
(IMP812)
MR
Manual
Reset
RESET
(RESET)
GND
VCC
碌C
or
碌P
RESET
Input
GND
811/12_01.eps
漏
1999 IMP, Inc.
408-432-9100/www.impweb.com
1

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