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LM555/NE555/SA555
Single Timer
Features
•
•
•
•
•
High Current Drive Capability (200mA)
Adjustable Duty Cycle
Temperature Stability of 0.005%/°C
Timing From
µSec
to Hours
Turn off Time Less Than 2µSec
Description
The LM555/NE555/SA555 is a highly stable controller
capable of producing accurate timing pulses. With a
monostable operation, the time delay is controlled by one
external resistor and one capacitor. With an astable
operation, the frequency and duty cycle are accurately
controlled by two external resistors and one capacitor.
8-DIP
Applications
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•
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Precision Timing
Pulse Generation
Time Delay Generation
Sequential Timing
1
8-SOP
1
Internal Block Diagram
R
R
R
8
GND
1
Vcc
Comp.
Trigger
Discharging Tr.
7
2
Discharge
Output
3
OutPut
Stage
F/F
6
Comp.
Threshold
Control
Voltage
Reset
4
5
Vref
Rev. 1.0.3
©2002 Fairchild Semiconductor Corporation