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    參數(shù)資料
    

    


    


    
型號(hào)：
MAX6391KA29

    

    
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(yè)數(shù)：
1/9頁(yè)

    

    
文件大小：
170K

    

    
代理商：
MAX6391KA29


    

    

    

	
    
    
    

    
    
	
    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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Dual-Voltage uP Supervisory Circuits with Sequenced Reset Outputs

    

    
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    相關(guān)代理商/技術(shù)參數(shù)
    		

    參數(shù)描述
    		

    
    

    
MAX6391KA29+
 制造商:Maxim Integrated Products 功能描述:MAXIM MAX6391KA29+, SUPERVISORS - Tape and Reel 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:Maxim MAX6391KA29+, Microprocessor Supervisory Circuit 2.93V Reset Threshold 1.2V-5.5V 8-pin SOT23

    

    
MAX6391KA29+T
功能描述:監(jiān)控電路 Dual 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

    

    
MAX6391KA29-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

    

    
MAX6391KA31
 制造商:Maxim Integrated Products 功能描述:DUAL-VOLTAGE RESET CIRCUITS WITH SE - Rail/Tube

    

    
MAX6391KA31+
 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 3.08V/0.625V 15UA 8PIN SOT-23 - Rail/Tube

    

    
    
    
    
	
    	
    
    
     
     
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