CD4017 Integrated Circuit DIP-16

The CD4017 is a CMOS technology-based integrated circuit, also known as a Johnson Counter or decade counter. It features 10 distinct outputs, each of which is activated sequentially with every clock pulse. This IC is extensively employed in sequential logic circuits, timing circuits, LED animations, frequency dividers, and other similar applications.

Key Specifications:

• Operating Voltage: It typically operates in the range of 3V to 15V, although some models can withstand up to 18V.
• Number of Outputs: It offers 10 sequential outputs, labeled Q0 through Q9.
• Clock Input: Each clock pulse sequentially activates the next output.
• Reset Input: The counting process resets and the Q0 output is activated when the reset pin is engaged.
• Enable Input: The clock input is disabled and counting is halted when the enable pin is active.
• Low Power Consumption: The IC consumes minimal power due to the use of CMOS technology.

Working Mechanism:

The CD4017 operates by activating the subsequent output with each rising edge of the clock input. For instance, the Q0 output is initially active. With the arrival of the first clock pulse, Q1 is activated, followed by Q2 with the second clock pulse, and so on up to Q9. After Q9, it resets to Q0, and the cycle repeats.

Application Domains:

• LED Animations: It is utilized in sequential LED lighting applications.
• Frequency Divider: It reduces the input frequency by a factor of 10.
• Timing Circuits: It is used in circuits that require outputs to be sequentially activated at specific time intervals.
• Games and Entertainment Electronics: It is frequently used in basic electronic games.

Pin Configuration:

• Pin 14 (Clock): This is the clock input.
• Pin 13 (Enable): This is the enable input, which allows counting to continue when it is LOW.
• Pin 15 (Reset): This is the reset input, which resets counting when it is HIGH.
• Pin 16 (VDD): This is the positive supply voltage.
• Pin 8 (VSS): This is the ground (GND).
• Pin 3 (Q0) - Pin 11 (Q9): These are the sequential outputs.
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The CD4017 is a straightforward and efficient counter IC, making it a favored component in numerous electronic projects.