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參數(shù)資料
| 型號： | MAX812 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 4-Pin μp Voltage Monitors with Manual Reset Input(4管腳μP電壓監(jiān)控器,低有效復(fù)位輸出) |
| 中文描述： | 4引腳微處理器電壓監(jiān)視器，帶有手動復(fù)位輸入 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 69K |
| 代理商： | MAX812 |
_______________General Desc ription
The MAX811/MAX812 are low-power microprocessor
(μP) supervisory circuits used to monitor power sup-
plies in μP and digital systems. They provide excellent
circuit reliability and low cost by eliminating external
components and adjustments when used with 5V-pow-
ered or 3V-powered circuits. The MAX811/MAX812 also
provide a debounced manual reset input.
These devices perform a single function: They assert a
reset signal whenever the V
CC
supply voltage falls
below a preset threshold, keeping it asserted for at
least 140ms after V
CC
has risen above the reset thresh-
old. The only difference between the two devices is that
the MAX811 has an active-low RESET output (which is
guaranteed to be in the correct state for V
CC
down to
1V), while the MAX812 has an active-high RESET out-
put. The reset comparator is designed to ignore fast
transients on V
CC
. Reset thresholds are available for
operation with a variety of supply voltages.
Low supply current makes the MAX811/MAX812 ideal
for use in portable equipment. The devices come in a
4-pin SOT-143 package.
________________________Applic ations
Computers
Controllers
Intelligent Instruments
Critical μP and μC Power Monitoring
Portable/Battery-Powered Equipment
____________________________Features
o
Precision Monitoring of 3V, 3.3V, and 5V
Power-Supply Voltages
o
6μA Supply Current
o
140ms Min Power-On Reset Pulse Width;
RESET Output (MAX811), RESET Output (MAX812)
o
Guaranteed Over Temperature
o
Guaranteed RESET Valid to V
CC
= 1V (MAX811)
o
Power-Supply Transient Immunity
o
No External Components
o
4-Pin SOT-143 Package
M
4-Pin μP Voltage Monitors
with Manual Reset Input
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
1
2
4
3
V
CC
MR
(RESET) RESET
GND
MAX811
MAX812
SOT-143
TOP VIEW
( ) ARE FOR MAX812
NOTE: SEE LAST PAGE FOR MARKING INFORMATION.
__________________Pin Configuration
MAX811
MAX812
V
CC
V
CC
RESET
(RESET)
RESET
INPUT
GND
V
CC
GND
μ
P
( ) ARE FOR MAX812
PUSHBUTTON
SWITCH
MR
__________Typic al Operating Circ uit
19-0411; Rev 0; 6/95
PART
*
MAX811_CUS-T
MAX812_CUS-T
*This part offers a choice of five different reset threshold
voltages. Select the letter corresponding to the desired
nominal reset threshold voltage, and insert it into the blank
to complete the part number.
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
4 SOT-143
4 SOT-143
______________Ordering Information
RESET THRESHOLD
SUFFIX
L
M
T
S
R
VOLTAGE (V)
4.63
4.38
3.08
2.93
2.63
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX812_EUS-T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:4-Pin μP Voltage Monitors with Manual Reset Input |
| MAX81211ESA | 制造商:Maxim Integrated Products 功能描述:LOW COST, MICROPROCESSOR SUPERVISORY CIRCUIT - Bulk |
| MAX812CUS-T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Analog IC |
| MAX812LCUS-T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Voltage Detector |
| MAX812LEUS | 制造商:Maxim Integrated Products 功能描述:4-PIN UP VOLTAGE MONITORS WITH MANU - Rail/Tube |
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