參數(shù)資料
型號(hào)： MAX6842FUKD3
廠商： Maxim Integrated Products, Inc.
英文描述： Ultra-Low-Voltage uP Reset Circuits and Voltage Detectors
中文描述： 超低電壓復(fù)位電路和電壓檢測(cè)器
文件頁(yè)數(shù)： 1/9頁(yè)
文件大?。?/td> 185K
代理商： MAX6842FUKD3
General Description
The MAX6841–MAX6845 microprocessor (μP) supervi-
sory circuits monitor ultra-low-voltage power supplies in
μP and digital systems. They provide excellent circuit
reliability at low cost by eliminating external compo-
nents and adjustments when used with +0.9V to +1.5V
systems. Factory-trimmed reset thresholds are avail-
able for the MAX6841/MAX6842. The MAX6843/
MAX6844/MAX6845 provide a RESET IN input, allowing
the user to externally adjust the reset threshold. The
MAX6841–MAX6845 family features a debounced man-
ual reset input (
MR
). The reset comparator is designed
to ignore fast transients on V
CC
.
The MAX6841–MAX6845 assert a reset signal whenev-
er the V
CC
supply voltage declines below a preset or
adjustable threshold or whenever manual reset (
MR
) is
asserted. Reset remains asserted for a fixed timeout
delay after V
CC
has risen above the reset threshold and
when manual reset is deasserted. Five timeout periods
are available for each part: 150μs (voltage detector ver-
sion), 1.5ms, 30ms, 210ms, and 1.68s (typ).
The MAX6841/MAX6843 have an active-low push-pull
reset output. The MAX6841/MAX6842/MAX6844 have
an active-high push-pull reset output, and the
MAX6842/MAX6845 have an active-low open-drain
reset output. The active-low open-drain reset output
requires a pullup resistor that can be connected to a
voltage from 0 to V
CC
.
The low supply current (5.7μA) and small package
(SOT23-5) make the MAX6841–MAX6845 ideal for use
in portable equipment.
Applications
Computers
Controllers
Intelligent Instruments
Critical μP and μC Power Monitoring
Portable/Battery-Powered Equipment
Telecom/Networking Equipment
Basestations
Servers/Workstations
Features
o
Factory-Set Reset Threshold Voltages for
Monitoring Supplies from 0.9V to 1.5V
(MAX6841/MAX6842)
o
Adjustable Threshold RESET IN
(MAX6843/MAX6844/MAX6845)
o
Low Power Consumption: 5.7μA (typ)
o
±2.5% Reset Threshold Accuracy
Over Temperature
o
Five Timeout Periods: 150μs (Voltage Detector
Version), 1.5ms, 30ms, 210ms, and 1.68s
o
Available in Three Output Configurations
Push-Pull
RESET
Push-Pull RESET
Open-Drain
RESET
o
Guaranteed Reset Valid to V
CC
= 0.55V
(Active Low)
o
Manual Reset Input
o
Immune to Short V
CC
Transients
o
Space-Saving 5-Pin SOT23 Package
Ordering Information
M
Ultra-Low-Voltage μP Reset Circuits and
Voltage Detectors
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
19-2625; Rev 1; 2/03
Selector Guide and Typical Operating Circuit appear at end
of data sheet.
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
5 SOT23-5
MAX6841
_UKD_-T
MAX6842
_UKD_-T
MAX6843
UKD_-T
MAX6844
UKD_-T
MAX6845
UKD_-T
Note:
Insert desired suffix letter (from the Threshold Suffix Guide
and the Active Timeout Period tables) into the blanks to com-
plete the part number. For example, the MAX6842GUKD1 has a
reset threshold of 1.11V and a typical reset timeout period of
1.5ms. Sample stock is generally available on standard versions
only (see the Standard Versions table). Standard versions
require a minimum order increment of 2.5k units. Nonstandard
versions must be ordered in 10k-unit increments. Contact factory
for availability. All parts are offered in tape-and-reel only.
GND
RESET
1
5 V
CC
MAX6841
MAX6842
SOT23-5
TOP VIEW
2
3
4
RESET
MR
( ) ARE FOR 6844
GND
RESET IN
1
5 V
CC
MAX6843
MAX6844
MAX6845
SOT23-5
2
3
4
RESET
(RESET)
MR
Pin Configurations
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX6842FUKD3+ 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product
MAX6842FUKD3+T 功能描述:監(jiān)控電路 Single uPower Reset Circuit RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MAX6842FUKD3-T 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類(lèi)型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
MAX6842FUKD4 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX6842FUKD4+ 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 1.05V 8.1UA 5PIN SOT-23 - Rail/Tube
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