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LM555 Timer IC

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  • Typical operating voltage is +5V, can withstand a maximum of +18V.
  • The source/sink current of the output pin is 200mA
  • Consumes up to 3mA when operating at +5V
  • Trigger Voltage is 1.67 when operating at +5V
  • Operating Temperature is 70 degrees Celsius.
  • Available in 8-pin PDIP, SOIC, and VSSOP packages

10.00 8.47+18% GST

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SKU 04BO001 Categories ,

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Description

555 Timer IC

LM555 Timer IC is the most commonly used ICs for timing and Pulse generation applications. They can adapt itself to various applications due to its different operating modes. They are very simple to understand if we take a look at the components present inside as shown below. ( find out a wide range of Clock and Timer IC  at solicstores.in).

555

 

 

 

 

 

 

 

 

There are three resistors of value 5K, which gives this IC it’s iconic name “555 Timer”. It has dual comparators and flip-flop which will make this IC operated in three different modes such as Astable, Monostable, and Bistable(Schmitt) Mode.  

Astable Mode:

In this mode, a square wave is produced at the output pin. This wave is usually used to turn ON and OFF a load at specific intervals like blinking an LED. This mode is also used to generate clock pulse signals for digital IC’s. The ON time (T1) and OFF time (T2) of the wave can be controlled by the Resistors (RA, RB) and Capacitor (C) shown in below figure

555

 

Monostable Mode:

In Monostable mode a pulse of pre-defined length is produced when a trigger button is pressed. The output pin stays low until the button is pressed and once pressed it remains high for a period of time decided by the value of the resistor (RA) and Capacitor (C) shown in the below circuit.

555

Bi-Stable Mode:

The Bi-stable mode is also called as Schmitt Trigger Mode. This mode is used when a load has to be turned on and off using a push button. This mode does not have major practical importance hence it is rarely used.

555 Timer IC Features

  • Typical operating voltage is +5V, can withstand a maximum of +18V.
  • The source/sink current of the output pin is 200mA
  • Consumes up to 3mA when operating at +5V
  • Trigger Voltage is 1.67 when operating at +5V
  • Operating Temperature is 70 degrees Celsius.
  • Available in 8-pin PDIP, SOIC, and VSSOP packages

Applications

  • Time Delay Generation
  • Pulse Width Modulation
  • Pulse generation
  • Precision Timing
  • Sequential Timing circuits

Package Includes :

1 x LM555 Timer IC

Specification

IC Chip 555
Supply Voltage (V) 4.5 to 16
Output amplitude 4.2V V-PP to 11.4V  V-PP.
Output Current 15mA for 5V & 35mA for 12V
Temperature Range 0 to +70°C
Maximum allowable power dissipation 600 mW

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