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555

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555

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Regular Price: Rs. 49.15

Special Price Rs. 19.49

Availability: In stock

  • Input voltage: 5V.

  • Output: ~5V @200mA.

  • Timing From Microseconds to Hours.

  • Astable or Monostable Operation.

  • Adjustable Duty Cycle.

  • TTL-Compatible Output Can Sink or Source Up to 200 mA.
  • The 555 timer IC is an integrated circuit (chip) used in a variety of timer, pulse generation, and oscillator applications. The 555 can be used to provide time delays, as an oscillator, and as a flip-flop element. Derivatives provide up to four timing circuits in one package. These devices are precision 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 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. The operation is specified for supplies of 5 V to 15 V. With a 5-V supply, output levels are compatible with TTL inputs. The NE555 is characterized for operation from 0°C to 70°C. The SA555 is characterized for operation from –40°C to 85°C. The SE555 is characterized for operation over the full military range of –55°C to 125°C. features of the 555 timers are: Supply voltage between 4.5 and 18 volts. supply current 3 to 6 mA, and a Rise/Fall time of 100 nSec.

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