Image NE555
型号: NE555
厂商: STMicroelectronics STMicroelectronics
标准:
分类: 半导体
描述: general purpose single bipolar timers
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NE555  
SA555 - SE555  
GENERAL PURPOSE SINGLE BIPOLAR TIMERS  
.
.
LOW TURN OFF TIME  
MAXIMUM  
OPERATING  
FREQUENCY  
GREATER THAN 500kHz  
.
.
TIMING FROM MICROSECONDS TO HOURS  
OPERATES IN BOTH ASTABLE AND  
MONOSTABLE MODES  
HIGH OUTPUT CURRENT CAN SOURCE OR  
SINK 200mA  
.
.
.
.
ADJUSTABLE DUTY CYCLE  
TTL COMPATIBLE  
TEMPERATURE STABILITY OF 0.005%  
PERoC  
N
DIP8  
D
SO8  
DESCRIPTION  
(Plastic Package)  
(Plastic Micropackage)  
TheNE555monolithictiming circuitisahighlystable  
controllercapableofproducingaccuratetime delays  
or oscillation. In the time delay mode of operation,  
the time is precisely controlled by one external re-  
sistorandcapacitor.Forastableoperationasanos-  
cillator, the free running frequency and the duty cy-  
cle are both accurately controlled with two external  
resistors and one capacitor.The circuit may be trig-  
gered and reset on falling waveforms, and the out-  
put structure can source or sink up to 200mA. The  
NE555 is available in plastic and ceramic minidip  
packageand in a 8-lead micropackage and inmetal  
can package version.  
ORDER CODES  
Package  
Part  
Number  
Temperature  
Range  
N
D
NE555  
0oC, 70oC  
–40oC, 105oC  
–55oC, 125oC  
SA555  
SE555  
PIN CONNECTIONS (top view)  
1
2
3
4
8
7
6
5
1 - GND  
2 - Trigger  
3 - Output  
4 - Reset  
5 - Control voltage  
6 - Threshold  
7 - Discharge  
8 - VCC  
1/10  
July 1998