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參數(shù)資料
| 型號： | MAX6392KA44 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Dual-Voltage uP Supervisory Circuits with Sequenced Reset Outputs |
| 中文描述： | 雙電壓監(jiān)控電路的連續(xù)復(fù)位輸出 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 170K |
| 代理商： | MAX6392KA44 |
General Description
The MAX6391/MAX6392 microprocessor (μP) supervisory
circuits provide sequenced logic reset outputs for multi-
component or dual-voltage systems. Each device can
monitor two supply voltages and time-sequence two reset
outputs to control the order in which system components
are turned on and off. The MAX6391/MAX6392 increase
system reliability and reduce circuit complexity and cost
compared to separate ICs or discrete components.
The MAX6391/MAX6392 monitor V
CC
as the master
reset supply. Both
RESET1
and
RESET2
are asserted
whenever V
CC
drops below the selected factory-fixed
reset threshold voltage.
RESET1
remains asserted as
long as V
CC
is below the threshold and deasserts
140ms (min) after V
CC
exceeds the thresholds.
RESET IN2 is monitored as the secondary reset supply
and is adjustable with an external resistive-divider net-
work.
RESET2
is asserted whenever either V
CC
or
RESET IN2 is below the selected thresholds.
RESET2
remains asserted 140ms (min) or a capacitor-
adjustable time period after V
CC
and RESET IN2
exceed their thresholds.
RESET2
is always deasserted
after
RESET1
during system power-up and is always
asserted before
RESET1
during power-down.
The MAX6391 includes two internal pullup resistors for
RESET1
and
RESET2
(the open-drain outputs can be
externally connected to the desired pullup voltages).
The MAX6392 includes an active-low manual reset
input (
MR
) that asserts both
RESET1
(push-pull) and
RESET2
(open drain).
The MAX6391/MAX6392 are available in small 8-pin
SOT23 packages and are specified over the -40°C to
+85°C extended temperature range.
Applications
Computers
Controllers
Critical μP Power Monitoring
Set-Top Boxes
Printers
Servers/Workstations
Industrial Equipment
Multivoltage Monitoring
Features
o
Preset VCCReset Threshold Voltages from 1.58V
to 4.63V (master supply)
o
Customer-Adjustable RESET IN2 to Monitor
Voltages Down to 625mV (secondary supply)
o
Fixed (140ms min)
RESET1
Timeout
o
Fixed (140ms min) or Customer-Adjustable
RESET2
Timeout Period
o
Guaranteed Reset Valid to V
CC
= 1V
o
Active-Low Open-Drain Outputs or Push-
Pull/Open-Drain Combination
o
Internal Open-Drain Pullup Resistors (for external
V
OH
voltage connections)
o
Manual Reset Input (MAX6392 only)
o
Immune to Short Negative V
CC
Transients
o
15μA Typical Supply Current
o
Few External Components
o
Small 8-Pin SOT23 Package
M
Dual-Voltage μP Supervisory Circuits
with Sequenced Reset Outputs
________________________________________________________________
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
R2
RESET2
GND
1
2
8
7
R1
RESET1
V
CC
CSRT
RESET IN2
SOT23-8
TOP VIEW
3
4
6
5
MAX6391
Pin Configurations
Ordering Information
19-2210; Rev 1; 10/02
*
Insert the desired suffix (see Selector Guide) into the blanks to
complete the part number. The MAX6391/MAX6392 require a
2.5k minimum order increment and are available in tape-and-
reel only. Samples are typically available for standard versions
(see Selector Guide for standard versions). Contact factory for
availability.
PART*
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
SOT23-8
SOT23-8
MAX6391
KA_ _-T
MAX6392
KA_ _-T
Pin Configurations continued at end of data sheet.
Typical Operating Circuit appears at end of data sheet.
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| MAX6391KA16 | Dual-Voltage uP Supervisory Circuits with Sequenced Reset Outputs |
| MAX6391KA17 | Dual-Voltage uP Supervisory Circuits with Sequenced Reset Outputs |
| MAX6391KA22 | Dual-Voltage uP Supervisory Circuits with Sequenced Reset Outputs |
| MAX6391KA23 | Dual-Voltage uP Supervisory Circuits with Sequenced Reset Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6392KA44+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 4.38V/0.625V 15UA 8PIN SOT-23 - Rail/Tube |
| MAX6392KA44+T | 功能描述:監(jiān)控電路 Dual uPower Reset Circuit RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(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 |
| MAX6392KA44-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(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 |
| MAX6392KA46 | 制造商:Maxim Integrated Products 功能描述:DUAL-VOLTAGE RESET CIRCUITS WITH SE - Cut Tape Product |
| MAX6392KA46+ | 制造商:Maxim Integrated Products 功能描述:MAXIM MAX6392KA46+ PROCESSOR SUPERVISORS - Tape and Reel 制造商:Maxim Integrated Products 功能描述:Maxim MAX6392KA46+ Processor Supervisors |
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