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Pin Number. Pin Name. Output pins Q0 to Q9. These are the 10 output pins on which the counting occurs, they are not in order hence verify pin diagram above. Vss or Ground. Connected to the Ground of the circuit.
Carry Out CO. This pin goes high after the IC counts from 1 to This is used as carry while counting. Clock Enable EN. This is an input which when made high will hold the count at the current state. The counting happens when this clock pulse goes high , this pin is normally connected to timer or other uC to produce a pulse. As the name suggests this pin resets the count back to 1. The IC CD is used for counting applications, it has the capability to turn on 10 outputs sequentially in a pre-defined time and reset the count or hold it when required.
It also has the capability to indicate the status of counting using Carry pin. This is commonly used for Led chasers and other logical output projects, so if you are looking for an sequential decoded counting IC that can count up to 10 then this IC will be your right choice.
We have 10 output pins ranging from Q0 to Q9, these pins can be connected to any load but we are using LEDs here as shown in the circuit below. This IC will increment the count from 0 to 9 Q0 to Q9 each time it senses a high pulse from the clock pin pin The output changes sequentially from Q0 to Q9 for every high pulse from the Clock pin, but this sequence can be interrupted by two pins.
They are the Clock Enable pin 13 and Reset pin 15 pins. Similarly, if the reset pin is made high. The count will reset itself back to Q0 and will stay there until Q0 is made low again. We have another pin called the carry out pin 12 th pin , this pin will stay low 0V by default. But when the IC completes counting up to 10, the pin will go high and will remain high till it counts till 5, when its 5 it will go down 0V and turn on again when it reaches The timing diagram of the IC indicating the state of Output pins and Carry pin for every high pulse signal is shown below.
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IC 4017 – Pin Configuration & Application
Imagine It can count up to 10 and has 10 separate outputs. And will show a single output pin for each count from 0 to 9. The power supply range of 3 volts to 16 volts. And Maximum power supply voltage does not more than 18 volts. Pin 13 has Clock enabled pins to controls the clock.
Pin Number. Pin Name. Output pins Q0 to Q9. These are the 10 output pins on which the counting occurs, they are not in order hence verify pin diagram above.