LMC555 CMOS Timer
May 2006
LMC555
CMOS Timer
General Description
The LMC555 is a CMOS version of the industry standard
555 series general purpose timers. In addition to the stan-
dard 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 oscil-
lation 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 fre-
quency range and low supply capability.
Features
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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
Pulse Width Modulator
00866915
00866920
Ordering Information
Package
Temperature Range
Industrial
−40˚C to +85˚C
8-Pin Small Outline (SO)
8-Pin Mini Small Outline
(MSOP)
8-Pin Molded Dip (MDIP)
8-Bump micro SMD
8-Bump micro SMD
NOPB
LMC555CM
LMC555CMX
LMC555CMM
LMC555CMMX
LMC555CN
LMC555CBP
LMC555CBPX
LMC555CTP
LMC555CTPX
LMC555CM
ZC5
LMC555CN
F1
F02
Rails
2.5k Units Tape and Reel
1k Units Tape and Reel
3.5k Units Tape and Reel
Rails
250 Units Tape and Reel
3k Units Tape and Reel
250 Units Tape and Reel
3k Units Tape and Reel
M08A
MUA08A
N08E
BPA08EFB
TPA08EFA
Package Marking
Transport Media
NSC Drawing
Note:
See Mil-datasheet MNLMC555-X for specifications on the military device LMC555J/883.
LMCMOS
™
is a trademark of National Semiconductor Corp.
© 2006 National Semiconductor Corporation
DS008669
www.national.com
NSC [ NATIONAL SEMICONDUCTOR ]
