NE555 Datasheet, PDF (1/10 Pages) NXP Semiconductors – Timer

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%
PER^oC
DE SC RI P TI O N
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.
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
ORDER CODES
Part
Number
NE555
SA555
SE555
Temperature
Range
0^oC, 70^oC
–40^oC, 105^oC
–55^oC, 125^oC
Package
N
D
•
•
•
•
•
•
PIN CONNECTIONS (top view)
1
8
1 - GND
2 - Trigger
3 - Output
2
7
4 - Reset
5 - Control voltage
3
6
6 - Threshold
7 - Discharge
8 - VCC
4
5
July 1998
1/10