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Texas Instruments NE555P IC Single Precision Timer (Pack of 12)

4.8 out of 5 stars 113 ratings

Price: $5.35 ($0.45 / Item) FREE Shipping on your first order. Details & FREE Returns
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Original Version
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  • Timing From Microseconds to Hours
  • Astable or Monostable Operation
  • TTL-Compatible Output Can Sink or Source Up to 200 mA
  • Adjustable Duty Cycle
  • Operation is specified for supplies of 5 V to 15 V
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Frequently bought together

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Product description

Color:Original Version

The NE555 are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or mono-stable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the a-stable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control-voltage terminal. When the trigger input falls below the trigger level, the flip-flop is set, and the output goes high. If the trigger input is above the trigger level and the threshold input is above the threshold level, the flip-flop is reset and the output is low. The reset (RESET) input can override all other inputs and can be used to initiate a new timing cycle. When RESET goes low, the flip-flop is reset, and the output goes low. When the output is low, a low-impedance path is provided between discharge (DISCH) and ground. The output circuit is capable of sinking or sourcing current up to 200 mA. Operation is specified for supplies of 5 V to 15 V. With a 5-V supply, output levels are compatible with TTL inputs.


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Color:Original Version

Technical Details

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Customer reviews

4.8 out of 5 stars
4.8 out of 5
113 customer ratings
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Reviewed in the United States on December 8, 2017
Color: Original VersionVerified Purchase
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Reviewed in the United States on March 10, 2019
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Reviewed in the United States on June 20, 2018
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Reviewed in the United States on May 24, 2017
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Reviewed in the United States on February 14, 2020
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Reviewed in the United States on January 16, 2020
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Reviewed in the United States on February 13, 2018
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Reviewed in the United States on December 17, 2019
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Top international reviews

Benoit Ouellet
5.0 out of 5 stars NE555
Reviewed in Canada on September 28, 2017
Color: Original VersionVerified Purchase
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Lioneheart
5.0 out of 5 stars I like it
Reviewed in Canada on November 19, 2019
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