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SA555

更新时间: 2024-11-20 04:06:23
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS /
页数 文件大小 规格书
20页 495K
描述
General purpose single bipolar timers

SA555 数据手册

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NE555  
SA555 - SE555  
General purpose single bipolar timers  
Features  
Low turn off time  
Maximum operating frequency greater than  
500kHz  
Timing from microseconds to hours  
N
DIP8  
(Plastic package)  
Operates in both astable and monostable  
modes  
High output current can source or sink 200mA  
Adjustable duty cycle  
TTL compatible  
D
SO8  
Temperature stability of 0.005% per °C  
(Plastic micropackage)  
Description  
The NE555 monolithic timing circuit is a highly  
stable controller capable of producing accurate  
time delays or oscillation. In the time delay mode  
of operation, the time is precisely controlled by  
one external resistor and capacitor. For a stable  
operation as an oscillator, the free running  
frequency and the duty cycle are both accurately  
controlled with two external resistors and one  
capacitor.  
Pin connections  
(top view)  
1
2
3
4
8
7
6
5
The circuit may be triggered and reset on falling  
waveforms, and the output structure can source  
or sink up to 200mA.  
1 - GND  
5 - Control voltage  
6 - Threshold  
7 - Discharge  
2 - Trigger  
3 - Output  
4 - Reset  
8 - V  
CC  
March 2007  
Rev 4  
1/20  
www.st.com  
20  

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