Your Guide into CD4017 IC
2024-11-29 232

The CD4017 integrated circuit stands out in its diverse application spectrum, notably excelling in counting tasks and LED-driven projects. Renowned for its decade counter/divider abilities, it boasts 10 decoded outputs, each capable of sequential activation. This dependable component finds utility across a variety of electronic endeavors, providing expansive possibilities in electronics.

Catalog

Pin Configuration of CD4017

Below is the pin configuration for the CD4017 IC, corresponding to the pin diagram provided above.

Pin Number	Pin Name	Description
1 to 7 and 9,10,11	Output pins Q0 to Q9	These are the 10 output pins on which the counting occurs. Verify pin diagram.
8	Vss or Ground	Connected to the Ground of the circuit.
12	Carry Out (CO)	This pin goes high after the IC counts from 1 to 10. Used as carry while counting.
13	Clock Enable (EN)	This input, when made high, will hold the count at the current state.
14	Clock	The counting happens when this clock pulse goes high. Usually connected to a 555 timer or microcontroller to produce a pulse.
15	Resets	Resets the count back to 1.
16	Vdd / Vcc	Connects to the supply voltage, typically +5V.

Package Options of CD4017

The CD4017 IC is available in both through-hole and surface-mount (SMD) packages. The through-hole options include PDIP-16 and CDIP-16, while the SMD options include SOIC-16, SOP-16, and TSSOP-16. Detailed information about these package types can be found in the CD4017 datasheet linked at the end.

Each package variation may have a distinct suffix in the part number. If you've ever wondered about the differences between designations like CD4017, CD4017B , or CD4017BE , they refer to the same decade counter/divider IC. The term CD4017 is the generic name, while CD4017BE specifically indicates the PDIP package variant.

Characteristics of CD4017

• The CD4017 IC is a high-speed, 16-pin CMOS decade counter known for its versatility and reliability in digital circuit applications.

• It features 10 decoded outputs, enabling sequential counting and signal routing in various systems.

• The IC supports a wide supply voltage range from 3V to 15V, with a typical operating voltage of +5V, making it suitable for low-power applications.

• It is TTL compatible, allowing seamless integration with TTL-based logic circuits.

• With a maximum clock frequency of 5.5 MHz, the CD4017 is ideal for high-speed counting operations.

• It is available in multiple package types, including 16-pin PDIP, GDIP, and PDSO, offering flexibility for both through-hole and surface-mount designs.

Equivalent IC to CD4017

• MIC4040

• IC4060

• IC4022

Circuit of the CD4017 IC

The CD4017 IC operates on a supply voltage ranging from 3V to 15V, with +5V being the typical operating voltage applied to the Vdd/Vcc pin, while the Ground/Vss pin is connected to ground. The IC provides 10 output pins labeled Q0 to Q9, which can drive various types of loads. In the example circuit below, these output pins are used to control LEDs, demonstrating its functionality in sequential counting applications.

The CD4017 IC operates as a decade counter/divider, sequentially activating its 10 outputs (Q0 to Q9) with each high pulse on the clock pin (pin 14). A clock source, such as a timer circuit or microcontroller, is required to generate these pulses. Once the count reaches Q9, the IC resets to Q0 and repeats the sequence. Control functions are provided through the Clock Enable (pin 13) and Reset (pin 15) pins. Setting the Clock Enable high pauses the count at the current output, resuming only when the pin is returned to low. The Reset pin, when pulled high, resets the IC to Q0, holding it there until the pin goes low. During standard operation, both control pins should remain low. The Carry Out pin (pin 12) signals the completion of a full counting cycle by toggling high at Q9 and returning low at Q5, facilitating cascading with additional ICs or triggering external events.

Timing Diagram of CD4017

The CD4017 is a 16-pin CMOS decade counter/divider that operates by sequentially activating its 10 output pins (Q0 to Q9) in response to clock input pulses. When powered on, the IC typically starts with output 0 (Q0) in a high state. Each rising edge of the clock signal causes the active output to advance to the next pin. For instance, when Q0 is high and a clock pulse is received, Q0 goes low, and Q1 goes high. This process continues with each clock pulse, sequentially advancing the output.

After the 10th clock pulse, when Q9 goes high, the IC automatically resets, returning to Q0, and the cycle begins again. The counter can also be reset manually at any time by applying a logic high signal to the RESET pin (pin 15). Additionally, the Carry Out pin (pin 12) outputs a signal when the IC completes a full counting cycle (reaching Q9), which can be used to cascade multiple CD4017 ICs for extended counting sequences or to trigger other events. The timing diagram below illustrates the state of the output pins (Q0 to Q9) and the Carry Out pin in response to high clock pulse signals.

CD4017 Applications

LED Projects

The CD4017 is widely used in LED-based designs such as LED matrices, LED chasers, and similar sequential lighting projects. Its ability to sequentially activate outputs makes it an ideal choice for creating dynamic visual effects.

Binary Counter/Decoder

This IC can function as a binary counter or decoder, making it valuable in digital logic applications requiring precise counting and decoding capabilities.

Divide-by-N Counter

The CD4017 can be configured for divide-by-N counting, where it outputs a signal after a specific number of clock pulses, useful for frequency division and timing circuits.

Specialized Applications

Beyond general use, the IC finds applications in remote metering systems, automotive electronics, and medical devices, where reliable counting and sequencing are required.

Dimensions of CD4017

Datasheet PDF

CD4017 Datasheets

CD4017.pdf
CD4017 Details PDF
CD4017 PDF - DE.pdf

CD4017BE Datasheets

CD4017BE.pdf
CD4017BE Details PDF
CD4017BE PDF - DE.pdf
CD4017BE PDF - FR.pdf
CD4017BE PDF - ES.pdf
CD4017BE PDF - IT.pdf
CD4017BE PDF - KR.pdf