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LM555CMX 参数 Datasheet PDF下载

LM555CMX图片预览
型号: LM555CMX
PDF下载: 下载PDF文件 查看货源
内容描述: 定时器 [Timer]
分类和应用: 模拟波形发生功能信号电路光电二极管PC
文件页数/大小: 12 页 / 823 K
品牌: NSC [ NATIONAL SEMICONDUCTOR ]
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LM555 Timer
July 2006
LM555
Timer
General Description
The LM555 is a highly stable device for generating accurate
time delays or oscillation. Additional terminals are provided
for triggering or resetting if desired. In the time delay mode of
operation, the time is precisely controlled by one external
resistor and capacitor. For astable operation as an oscillator,
the free running frequency and duty cycle are accurately
controlled with two external resistors and one capacitor. The
circuit may be triggered and reset on falling waveforms, and
the output circuit can source or sink up to 200mA or drive
TTL circuits.
Features
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Direct replacement for SE555/NE555
Timing from microseconds through hours
Operates in both astable and monostable modes
Adjustable duty cycle
Output can source or sink 200 mA
Output and supply TTL compatible
Temperature stability better than 0.005% per ˚C
Normally on and normally off output
Available in 8-pin MSOP package
Applications
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Precision timing
Pulse generation
Sequential timing
Time delay generation
Pulse width modulation
Pulse position modulation
Linear ramp generator
Schematic Diagram
00785101
© 2006 National Semiconductor Corporation
DS007851
www.national.com