National Semiconductor | High-performance Analog

 

 LMC555   
CMOS Timer 		Click link to Download

Features

  • Less than 1 mW typical power dissipation at 5V supply
  • 3 MHz astable frequency capability
  • 1.5V supply operating voltage guaranteed
  • Output fully compatible with TTL and CMOS logic at 5V supply
  • Tested to −10 mA, +50 mA output current levels
  • Reduced supply current spikes during output transitions
  • Extremely low reset, trigger, and threshold currents
  • Excellent temperature stability
  • Pin-for-pin compatible with 555 series of timers
  • Available in 8-pin MSOP Package and 8-Bump micro SMD package

    • Description

    The LMC555 is a CMOS version of the industry standard 555 series general purpose timers. In addition to the standard package (SOIC, MSOP, and MDIP) the LMC555 is also available in a chip sized package (8 Bump micro SMD) using National's micro SMD package technology. The LMC555 offers the same capability of generating accurate time delays and frequencies as the LM555 but with much lower power dissipation and supply current spikes. When operated as a one-shot, the time delay is precisely controlled by a single external resistor and capacitor. In the stable mode the oscillation frequency and duty cycle are accurately set by two external resistors and one capacitor. The use of National Semiconductor's LMCMOS ™ process extends both the frequency range and low supply capability.

    		Connection Diagram
    click for larger image


     

    ParametersValues
    Temperature Min -40 deg C
    Temperature Max 85 deg C

    Datasheets
    TitleSizeDateOther
    Language
    LMC555 CMOS Timer321
    Kbytes    		8-Nov-10日本語  
    LMC555 Mil-Aero Datasheet MNLMC555-X160 Kbytes 


    Application Notes
    TitleSizeDateOther
    Language
    AN-681: Application Note 681525
    Kbytes    		5-Aug-95 


    Other Technical Documents
    TitleTypeDate
    Ensuring Your Power Supply Design is StableExternal Article 2010-01-13

    Part Number(s)
    (NSID)    		Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LMC555CM/NOPB

    LMC555CM

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide4895
    AVNET-EMWorldwide356
    DIGI-KEYWorldwide1962
    FARNELLEurope and Asia3337
    MOUSERWorldwide475
    NEWARKAmericas2352
    RS COMPONENTSWorldwide976
    TAYLORAmericas13228
    		$0.37 each at 1K+ pcsrail
    of
    95
    LMC555CMM/NOPB

    LMC555CMM

    RoHS Status

    MINI SOIC    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide407
    AVNET-EMWorldwide4000
    DIGI-KEYWorldwide21765
    FARNELLEurope and Asia3025
    MOUSERWorldwide692
    NEWARKAmericas596
    TAYLORAmericas1579
    		$0.43 each at 1K+ pcsreel
    of
    1000
    LMC555CMMX/NOPB

    LMC555CMMX

    RoHS Status

    MINI SOIC    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide3500
    DIGI-KEYWorldwide0
    MOUSERWorldwide3480
    		$0.43 each at 1K+ pcsreel
    of
    3500
    LMC555CMX/NOPB

    LMC555CMX

    RoHS Status

    SOIC NARROW    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AITGAsia Pacific1001
    ARROWWorldwide2740
    AVNET-EMWorldwide5000
    DIGI-KEYWorldwide7973
    FARNELLEurope and Asia857
    MOUSERWorldwide1984
    NEWARKAmericas1117
    RSL MICROAsia Pacific10000
    TAYLORAmericas25475
    TECHMOSAAsia Pacific87500
    		$0.37 each at 1K+ pcsreel
    of
    2500
    LMC555CN/NOPB

    LMC555CN

    RoHS Status

    MDIP    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide442
    AVNET-EMWorldwide1002
    DIGI-KEYWorldwide1643
    FARNELLEurope and Asia3639
    MOUSERWorldwide628
    NEWARKAmericas615
    RS COMPONENTSWorldwide434
    TAYLORAmericas1312
    		$0.46 each at 1K+ pcsrail
    of
    40
    LMC555CTP/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    AVNET-EMWorldwide1960
    DIGI-KEYWorldwide0
    MOUSERWorldwide999
    		$0.43 each at 1K+ pcsreel
    of
    250
    LMC555CTPX/NOPB


    RoHS Status

    MICRO SMD    		Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide2800
    DIGI-KEYWorldwide0
    		$0.43 each at 1K+ pcsreel
    of
    3000
    LMC555 MDA

    RoHS Status    		Full production
    Lead Time: N/A

     

    Contact your distributor
    		CALLtray
    of
    N/A

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LMC555CBP
    		NONE
    		NATIONAL SEMICONDUCTOR
    		24 Jul 2009
    LMC555CBPX
    		NONE
    		NATIONAL SEMICONDUCTOR
    		24 Jul 2009
    LMC555H/883
    		NONE
    		NONE
    		08 Sep 1998
    LMC555J/883
    		LM555J/883
    		NATIONAL SEMICONDUCTOR
    		03 Dec 2008

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LMC555.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LMC555 is located at RoHS Status.

    Part Number(s)
    (NSID)    		Weight
    (milligrams)    		TypePinsMSL RatingPeak ReflowRoHS
    Status    		CAD SymbolsModelsPackage
    Marking
    Format
    LMC555CM/NOPB

    LMC555CM
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    LMC
    555CM
    LMC555CMM/NOPB

    LMC555CMM
    		29.851
    30.002
    		MINI SOIC81
    1    		260
    260    		DetailN/AN/A
    		ZXTT
    ZC5
    LMC555CMMX/NOPB

    LMC555CMMX
    		29.851
    30.002
    		MINI SOIC81
    1    		260
    260    		DetailN/AN/A
    		ZXTT
    ZC5
    LMC555CMX/NOPB

    LMC555CMX
    		69.761
    70.001
    		SOIC NARROW81
    1    		260
    235    		DetailN/AN/A
    		NSZXTT
    LMC
    555CM
    LMC555CN/NOPB

    LMC555CN
    		508.252
    510.002
    		MDIP81
    1    		NA
    NA    		DetailN/AN/A
    		NSUZXYTTE#
    LMC
    555CN
    LMC555CTP/NOPB

    		1.837
    		MICRO SMD81260DetailN/AN/A
    		XVF
    I 02
    LMC555CTPX/NOPB

    		1.837
    		MICRO SMD81260DetailN/AN/A
    		XVF
    I 02
    LMC555 MDA
    		1.236
    		Unpackaged DieN/A
    		-

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LMC555.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LMC555 is located at RoHS Status.

    Design Tools
    TitleSizeDate
    LMC555CBP Micro SMD Qualification Package4172 Kbytes17-Apr-2000

    CAD Symbols and Models
    N/A
    		 Models
    N/A


    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LMC555 MDAP2CMOS0508600145035002578995367
    LMC555CMP2CMOS0508600145035002578995367
    LMC555CMMP2CMOS0508600145035002578995367
    LMC555CMMXP2CMOS0508600145035002578995367
    LMC555CMXP2CMOS0508600145035002578995367
    LMC555CNP2CMOS0508600145035002578995367
    LMC555CTPP2CMOS0508600145035002578995367
    LMC555CTPXP2CMOS0508600145035002578995367

    Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

    For more information on Reliability Metrics, please click here.


    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LMC555.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LMC555 is located at RoHS Status.

    Obsolete Versions
    Obsolete PartAlternate Part or SupplierSourceLast Time Buy Date
    LMC555CBP
    		NONE
    		NATIONAL SEMICONDUCTOR
    		24 Jul 2009
    LMC555CBPX
    		NONE
    		NATIONAL SEMICONDUCTOR
    		24 Jul 2009
    LMC555H/883
    		NONE
    		NONE
    		08 Sep 1998
    LMC555J/883
    		LM555J/883
    		NATIONAL SEMICONDUCTOR
    		03 Dec 2008

    300A 12-Phase Stackable Power with the LM3754 Eval Board
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    300A 12-Phase Stackable Power with the LM3754 Eval Board
    Date: 2010-03-05
    Length: 0:9:07
    [Information as of 3-Feb-2012]
    Copyright © 2011 National Semiconductor Corporation