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...


  Typical Application
See Datasheet for Application Information

Parametric Table     expand
Parametric Table    collapse
Temperature Min -40 deg C
Temperature Max 85 deg C
Temperature Min -40 deg C
Temperature Max 85 deg C
View Using Catalog

Additional Resources

Design Tools (see below)


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

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


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
LMC555CBPXMICRO SMD8STD1260RoHS N/A Lifetime buyN/A
 
Buy Now 		1K+$0.48reel
of
3000		XVF
I 1
8 weeks5000
LMC555CMSOIC NARROW8STD
NOPB		1
1		235
260		RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.43rail
of
95		NSZXTT
LMC
555CM
8 weeks5000
LMC555CMXSOIC NARROW8STD
NOPB		1
1		235
260		RoHS N/A Full productionN/A
 
Buy Now 		1K+$0.43reel
of
2500		NSZXTT
LMC
555CM
6 weeks5000
LMC555CMMMINI SOIC8STD
NOPB		1
1		260
260		RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.50reel
of
1000		ZXTT
ZC5
8 weeks5000
LMC555CMMXMINI SOIC8STD
NOPB		1
1		260
260		RoHS N/A Full productionN/A
 
Buy Now 		1K+$0.50reel
of
3500		ZXTT
ZC5
8 weeks7500
LMC555CNMDIP8STD
NOPB		1
1		NA
NA		RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.54rail
of
40		NSUZXYTT
LMC
555CN
8 weeks2500
LMC555CTPMICRO SMD8NOPB1260RoHS N/A Full productionN/A
Samples
Buy Now 		1K+$0.59reel
of
250		XVF
I 02
8 weeksN/A
LMC555CTPXMICRO SMD8NOPB1260RoHS N/A Full productionN/A
 
Buy Now 		1K+$0.59reel
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/AN/A
5962-8950305PA
(LMC555J/883)		CERDIP8RoHS N/A ObsoleteN/A
 50+$11.70rail
of
40		NSZSSXXYYA
LMC555J/883
Q 5962-
8950305PA
8 weeks500

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 MD8CMOS0186800024250002688100371
LMC555 MDAP2CMOS0482950141725002536440139
LMC555CBPXP2CMOS0482950141725002536440139
LMC555CMP2CMOS0482950141725002536440139
LMC555CMMP2CMOS0482950141725002536440139
LMC555CMMXP2CMOS0482950141725002536440139
LMC555CMXP2CMOS0482950141725002536440139
LMC555CNP2CMOS0482950141725002536440139
LMC555CTPP2CMOS0482950141725002536440139
LMC555CTPXP2CMOS0482950141725002536440139
LMC555J/883CMOS0186800024250002688100371

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  

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

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 3-Jul-2009]