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LMC555CH Datasheet

  • LMC555CH

  • CMOS Timer(86.50 k)

  • 90.48KB

  • 8頁

  • ETC

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LMC555 CMOS Timer
May 1997
LMC555
CMOS Timer
General Description
The LMC555 is a CMOS version of the industry standard
555 series general purpose timers. It offers the same capa-
bility of generating accurate time delays and frequencies but
with much lower power dissipation and supply current
spikes. When operated as a one-shot, the time delay is pre-
cisely controlled by a single external resistor and capacitor.
In the astable mode the oscillation frequency and duty cycle
are accurately set by two external resistors and one capaci-
tor. The use of National Semiconductor鈥檚 LMCMOS
鈩?/div>
pro-
cess extends both the frequency range and low supply capa-
bility.
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 鈭?0 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
Block and Connection Diagrams
DS008669-1
(Pinouts for Molded and Metal Can Packages are identical)
Order Number LMC555CH, LMC555CM, LMC555CMM or LMC555CN
See NS Package Number H08C, M08A, MUA08A, or N08E
LMCMOS
鈩?/div>
is a trademark of National Semiconductor Corp.
漏 1997 National Semiconductor Corporation
DS008669
www.national.com

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