NE555V Datasheet, PDF (1/21 Pages) Texas Instruments – Timing from Microseconds through Hours

LM555
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SNAS548C – FEBRUARY 2000 – REVISED MARCH 2013
LM555 Timer
Check for Samples: LM555
FEATURES
1
•2 Direct Replacement for SE555/NE555
• Timing from Microseconds through Hours
• Operates in Both Astable and Monostable
Modes
• Adjustable Duty Cycle
• Output Can Source or Sink 200 mA
• Output and Supply TTL Compatible
• Temperature Stability Better than 0.005% per
°C
• Normally On and Normally Off Output
• Available in 8-pin VSSOP Package
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 oscillator, 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 200mA or drive TTL circuits.
APPLICATIONS
• Precision Timing
• Pulse Generation
• Sequential Timing
• Time Delay Generation
• Pulse Width Modulation
• Pulse Position Modulation
• Linear Ramp Generator
Schematic Diagram
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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