Timer Ic 555 Pin Diagram. It is connected to ground as usual. Connecting the pins in different ways we can put the 555 timer in astable mode bistable mode or monostable mode.
This will help you instantly recognise the function of each pin. Pin diagram specifications. The ic 556 and ic 558 are 14 pins dual timer and 16 pin quad timer versions of the ic 555 respectively.
Ic 7555 is the cmos version of the 555 ic with same pin configuration and function.
Two other packages of the timer ics are available which are 556 and 558. 8 power or vcc pin 1. The ic 556 and ic 558 are 14 pins dual timer and 16 pin quad timer versions of the ic 555 respectively. 555 internal circuit consists of three series 5k resistors connected between the vcc and gnd.
