4017 IC

CD 4017 IC-Decade Counter: CD4017 is used for low range counting applications. It can count from zero to ten and its outputs are decoded. The circuit designed by using this ic will save board space and also time required to design the circuit.

the functionality of each pin

cd4017 Pin#	Pin name	Pin direction	Pin purpose
1	Q5	Output	It goes high when the counter reads 5 counts
2	Q1	Output	It goes high when the counter reads 1 counts
3	Q0	Output	It goes high when the counter reads 0 counts
4	Q2	Output	It goes high when the counter reads 2 counts
5	Q6	Output	It goes high when the counter reads 6 counts
6	Q7	Output	It goes high when the counter reads 7 counts
7	Q3	Output	It goes high when the counter reads 3 counts
8	GND	Power	Ground supply
9	Q8	Output	It goes high when the counter reads 8 counts
10	Q4	Output	It goes high when the counter reads 4 counts
11	Q9	Output	It goes high when the counter reads 9 counts
12	CO	Output	This is divided by 10 output which is used to cascade the IC with another counter
13	EN	Input	Enable/Disable: · enable (normal mode) --> connected to ground or logic LOW voltage · disable --> connected to logic HIGH voltage
14	CLK	Input	Clock Input: The count advances on the rising edge of the clock
15	MR	Input	Reset: · normal operation --> connected to ground or logic LOW voltage · Reset --> connected to logic HIGH voltage
16	V_DD	Power	Positive supply