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NE556 Datasheet(PDF) 1 Page - STMicroelectronics

Part No. NE556
Description  GENERAL PURPOSE DUAL BIPOLAR TIMERS
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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1/8
s LOW TURN OFF TIME
s MAXIMUM OPERATING FREQUENCY
GREATER THAN 500kHz
s TIMING FROM MICROSECONDS TO
HOURS
s OPERATES IN BOTH ASTABLE AND
MONOSTABLE MODES
s HIGH OUTPUT CURRENT CAN SOURCE
OR SINK 200mA
s ADJUSTABLE DUTY CYCLE
s TTL COMPATIBLE
s TEMPERATURE STABILITY OF 0.005%
PER°C
DESCRIPTION
The NE556 dual monolithic timing circuit is a high-
ly 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 fre-
quency and the duty cycle are both accurately
controlled with two external resistors and one ca-
pacitor.
The circuit may be triggered and reset on falling
waveforms, and the output structure can source or
sink up to 200mA.
ORDER CODE
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
PIN CONNECTIONS (top view)
Part Number
Temperature Range
Package
ND
NE556
0°C, 70°C
••
SA556
-40°C, 105°C
••
SE556
-55°C, 125°C
••
N
DIP14
(Plastic Package)
D
SO14
(Plastic Micropackage)
Trigger
Output
Control Voltage
4
8
5
6
7
9
10
11
12
13
14
Trigger
Threshold
Discharge
Reset
Output
Discharge
GND
1
2
3
Threshold
Control Voltage
Reset
CC
V
NE556
SA556 - SE556
GENERAL PURPOSE DUAL BIPOLAR TIMERS
June 2003




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