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NE555 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. NE555
Description  GENERAL PURPOSE SINGLE BIPOLAR TIMERS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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 1 page
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July 1998
®
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
1
2
3
45
6
7
8
1 - GND
2 - Trigger
3 - Output
4 - Reset
5 - Control voltage
6 - Threshold
7 - Discharge
8- VCC
PIN CONNECTIONS (top view)
.
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%
PER
oC
ORDER CODES
Part
Number
Temperature
Range
Package
ND
NE555
0
oC, 70oC
••
SA555
–40
oC, 105oC
••
SE555
–55
oC, 125oC
••
DESCRIPTION
The NE555 monolithic timing circuit is a highly stable
controller capableof producing accuratetime delays
or oscillation. In the time delay mode of operation,
the time is precisely controlled by one external re-
sistor and capacitor.For a stableoperation as an os-
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
package and in a 8-lead micropackage and in metal
can package version.
NE555
SA555 - SE555
GENERAL PURPOSE SINGLE BIPOLAR TIMERS
1/10




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