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LM555C fiches techniques PDF

National Semiconductor - Timer

Numéro de référence LM555C
Description Timer
Fabricant National Semiconductor 
Logo National Semiconductor 





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LM555C fiche technique
February 1995
LM555 LM555C Timer
General Description
The LM555 is a highly stable device for generating accurate
time delays or oscillation Additional terminals are provided
for triggering or resetting if desired In the time delay mode
of operation the time is precisely controlled by one external
resistor and capacitor For astable operation as an oscilla-
tor the free running frequency and duty cycle are accurately
controlled with two external resistors and one capacitor
The circuit may be triggered and reset on falling waveforms
and the output circuit can source or sink up to 200 mA or
drive TTL circuits
Features
Y Direct replacement for SE555 NE555
Y Timing from microseconds through hours
Y Operates in both astable and monostable modes
Y Adjustable duty cycle
Y Output can source or sink 200 mA
Y Output and supply TTL compatible
Y Temperature stability better than 0 005% per C
Y Normally on and normally off output
Applications
Y Precision timing
Y Pulse generation
Y Sequential timing
Y Time delay generation
Y Pulse width modulation
Y Pulse position modulation
Y Linear ramp generator
Schematic Diagram
C1995 National Semiconductor Corporation TL H 7851
TL H 7851 – 1
RRD-B30M115 Printed in U S A

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