RadioShack LM555 Precision Timer (8-Pin DIP)

Catalog #: 2761723
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$2.59

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Precision monolithic timing circuits capable of producing accurate time delays or oscillation.

  • In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network.
  • In the astable mode of operation, the frequency and duty cycle may be independently controlled with two external resistors and a single external capacitor. 
  • The threshold and trigger levels are normally two-thirds and one-third, respectively, of VCC. These levels can be altered by use of the control voltage terminal.
Parts Warranty: 90 Days