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参数资料
| 型号： | LMC555MWA |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟波形发生器 |
| 英文描述： | PULSE; RECTANGULAR, 3 MHz, TIMER, UUC |
| 封装： | WAFER |
| 文件页数： | 1/13页 |
| 文件大小： | 389K |
| 代理商： | LMC555MWA |
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
n
Less than 1 mW typical power dissipation at 5V supply
n
3 MHz astable frequency capability
n
1.5V supply operating voltage guaranteed
n
Output fully compatible with TTL and CMOS logic at 5V
supply
n
Tested to 10 mA, +50 mA output current levels
n
Reduced supply current spikes during output transitions
n
Extremely low reset, trigger, and threshold currents
n
Excellent temperature stability
n
Pin-for-pin compatible with 555 series of timers
n
Available in 8 pin MSOP Package and 8-Bump micro
SMD package
Block and Connection Diagrams
Pulse Width Modulator
LMCMOS is a trademark of National Semiconductor Corp.
8-Pin SOIC, MSOP,
and MDIP Packages
DS008669-1
Top View
8-Bump micro SMD
DS008669-9
Top View
(Bump side down)
DS008669-20
DS008669-15
March 2002
LMC555
CMOS
T
imer
2002 National Semiconductor Corporation
DS008669
www.national.com
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