LMC555 - CMOS Timer
Datasheet Packaging Samples & Pricing Reliability Design Tools Knowledge Base

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

General Description

The LMC555 is a CMOS version of the industry standard 555 series general purpose timers. More...


 

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

Additional Resources

Design Tools


Connection Diagram

click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LMC555 CMOS Timer 767
Kbytes		 25-May-06 Download
LMC555 CMOS Timer (Japanese)
 513 Kbytes   Download
LMC555 Mil-Aero Datasheet MNLMC555-X 160 Kbytes   Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders		Budgetary PricingStd
Pack
Size		Package
Marking
Format
TypePinsSpec.MSL
Rating		Peak
Reflow		RoHS
Report		CAD
Symbols		WeeksQtyQty$US each
LMC555CMSOIC NARROW8NOPB
STD		1
1		260
235		RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.41rail
of
95		NSZXTT
LMC
555CM
8 weeks5000
LMC555CMXSOIC NARROW8NOPB
STD		1
1		260
235		RoHS N/A Full productionN/A
 
Buy Now 		1K+$0.41reel
of
2500		NSZXTT
LMC
555CM
6 weeks5000
LMC555CMMMINI SOIC8NOPB
STD		1
1		260
260		RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.47reel
of
1000		ZXTT
ZC5
8 weeks3000
LMC555CMMXMINI SOIC8NOPB
STD		1
1		260
260		RoHS N/A Full productionN/A
 
Buy Now 		1K+$0.47reel
of
3500		ZXTT
ZC5
8 weeks5000
LMC555CNMDIP8NOPB
STD		1
1		NA
NA		RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.51rail
of
40		NSUZXYTTE#
LMC
555CN
8 weeks2500
LMC555CTPMICRO SMD8NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.47reel
of
250		XVF
I 02
8 weeksN/A
LMC555CTPXMICRO SMD8NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		1K+$0.47reel
of
3000		XVF
I 02
8 weeksN/A
LMC555 MDAUnpackaged DieFull productionN/A
  CALLtray
of
N/A		-
N/AN/A
LMC555 MD8Unpackaged DieFull productionN/A
  CALLtray
of
N/A		-
N/A2000

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

General 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.

Reliability Metrics

Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LMC555 MD8CMOS0197150026050002739175862
LMC555 MDAP2CMOS0497350143300002556689228
LMC555CMP2CMOS0497350143300002556689228
LMC555CMMP2CMOS0497350143300002556689228
LMC555CMMXP2CMOS0497350143300002556689228
LMC555CMXP2CMOS0497350143300002556689228
LMC555CNP2CMOS0497350143300002556689228
LMC555CTPP2CMOS0497350143300002556689228
LMC555CTPXP2CMOS0497350143300002556689228
LMC555J/883CMOS0197150026050002739175862

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.


Design Tools

TitleSize in Kbytes Date Click link below to Download    
LMC555CBP Micro SMD Qualification Package 4172 Kbytes 17-Apr-2000 View Online Download  

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Application Notes

TitleSize in Kbytes Date Click link below to Download
AN-828: Application Note 828 Increasing the High Speed Torque of Bipolar Stepper Motors 808
Kbytes		 1-Oct-02 Download
AN-828 (Japanese): Application Note 828 Increasing the High Speed Torque of Bipolar Stepper Motors
 362 Kbytes   Download
AN-681: PC Mouse Implementation Using COP800 525
Kbytes		 5-Aug-95 Download
AN-460: Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors 306
Kbytes		 20-Sep-02 Download
AN-460 (Japanese): Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors
 322 Kbytes   Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 7-Nov-2009]