Ne555 Timer Pin Diagram. 555 timer pin diagram and descriptions. The working principle of the 555 timer is by considering the block diagram of the 555 timer ic.
In this circuit we have four basic blocks these are 1. It is connected to ground as usual. The first comparator has threshold input to pin 6 and control inputs for pin 5.
Two other packages of the timer ics are available which are 556 and 558.
When drawing a circuit diagram always draw the 555 as a building block as shown below with the pins in the following locations. This means it has 8 different pins each of which have different functions for the ic. When drawing a circuit diagram always draw the 555 as a building block as shown below with the pins in the following locations. When we connect the ic to the supply the capacitor c1 begins to charge through r1 and r2.
