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BuildCircuit is an online store for selling electronics kits and components related to Arduino, Raspberry Pi, etc. We operate from Sydney, Australia.

We design and sell basic electronic kits and Arduino modules for all electronics enthusiasts.



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This product is shipped from Sydney, Australia. Worldwide shipping available- we ship to USA, Canada, New Zealand, UK, EU and Non-EU countries.

The CD4017 is the one of the most popular Decade Counter (Divided by 10 Counter). It is a 5 Stage Divide by 10 Johnson Counter with 10 Decoded outputs. It has a wide supply voltage range from 3V to 15V and is compatible with TTL. It has a medium speed of operation, typically 5Mhz. Its applications includes industrial electronics, remote metering, automotive, medical electronics, instrumentation and alarm systems.

CD4017 Pin Diagram

CD4017 Pin Diagram

CD4017 Pin Diagram

The above diagram shows the pin out of CD4017B, Dual-In-line package.

Pin Functions



It is the supply voltage terminal of the IC. Being a CMOS IC it has a wide supply voltage range from 3V to 15V.




It is the ground pin or common pin of the IC CD4017. It should be connected to the negative terminal of the DC Power supply or battery.


Q0 – Q9


These are the 10 decoded outputs of the CD 4017 IC. One of the 10 decoded outputs may be high at a time.




It is the clock pin of the counter. Q0 goes high during the rise of the first clock cycle. Q0 goes low and Q1 goes high during the rise of the second clock cycle, and so on..


Clock Enable


This is the active low enable pin for clock input. If this input is high the counter will not count clock cycles.


Carry Out


This pin is used to indicate that the count exceeds 10. This pin goes low when the output Q5 goes high and goes high when the output Q0 goes high.




This is the reset pin of the IC. When this pin goes high, the output pin Q0 will go high.


Timing Diagram – CD4017


CD4017 Timing Diagram

CD4017 Timing Diagram


Clock is applied to the terminal continuously. When RESET signal is applied the IC will reset and the output Q0 will become HIGH. During the positive transaction of next clock cycle Q0 goes LOW and Q1 goes HIGH, and so on.. The output Carry Out becomes LOW and HIGH when the output Q5 goes HIGH and Q1 goes HIGH respectively. Clock Enable input is an Active Low input pin, when it is high the counter will not count clock cycles.




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Information about shipping

BuildCircuit is a trustworthy online store established in Sydney, Australia. We have been maintaining our quick shipping service since we started the store in Turku, Finland(in 2012).

Shipping information for international customers

We ship our products to more than 45 countries using Australia Post. Our regular customers are from the USA, Canada and Europe. We are currently using four different shipping methods to ship the orders to international destinations. We request you to select 'Standard Post' or 'Registered Post' while checking out so that you can receive your package quickly.

We usually ship your orders within 1-2 days. Small orders are usually processed and shipped on the same day.

Shipping information for Australian customers

All the orders from Australia are shipped on the next day at 9.00AM. Orders with Express Australia Post are also shipped on the next day if your order is placed before 1.00PM. We provide tracking code for Standard, Registered and Express Post orders only.

Australia Post has never lost any package since we started our business in Ausralia. So, we request you all to buy with confidence.

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