555 Timer Ic Pin Diagram. Two other packages of the timer ics are available which are 556 and 558. Ic 555 timer working.
The standard 555 timer ic consists of 25 transistors 15 resistors and 2 diodes on a silicon chip. This will help you instantly recognise the function of each pin. Ic 7555 is the cmos version of the 555 ic with same pin configuration and function.
Now as shown in figure there are eight pins for a 555 timer ic namely 1 ground.
When drawing a circuit diagram always draw the 555 as a building block as shown below with the pins in the following locations. This ic consists of 23 transistors 2 diodes and 16 resistors. The 555 timer ic is an integral part of electronics projects. We try to learn the pins with functions.
