CD4017 Johnson counter DIP 16

The CD4017BC Johnson Counter is a classic decade counter and divider IC that remains a staple in digital electronics design. Based on the CD4017 CMOS logic chip, this versatile component is perfect for hobbyists, students, and engineers working on sequential timing circuits, LED chasers, frequency dividers, and event counters. Its straightforward operation and reliable performance make it an essential building block for both educational projects and professional applications requiring precise sequential control.

Key Features:

• Decade Counter/Divider: Counts from 0 to 9 and provides ten decoded outputs, ideal for sequential switching applications.
• DIP-16 Package: Standard dual in-line package format for easy breadboard prototyping and PCB integration.
• Single Clock Input: Simple interface requiring only a clock signal to advance through the counting sequence.
• Reset Pin: Allows manual or automatic reset to output 0 for precise sequence control.
• Clock Enable Input: Inhibit pin for pausing the counting sequence without losing the current state.
• Carry Output: Provides a pulse after every ten clock pulses, enabling cascading of multiple counters.
• LED Driver Capability: Output current sufficient to drive LEDs directly in many applications.
• CMOS Technology: Low power consumption and wide operating voltage range.
• Part Number: CD4017BC (B-series CMOS logic family)
• Supply Voltage Range: Typically 3V to 15V (exact range may vary by manufacturer)
• Ten Fully Decoded Outputs: Each output goes high sequentially on successive clock pulses.
• Johnson Counter Architecture: Internally uses a 5-stage Johnson counter with decoding logic.
• Schmitt Trigger Clock Input: Provides noise immunity and clean transitions.
• High Output Current: Typically able to sink or source several milliamperes per output.
• Through-Hole Mounting: Standard 2.54mm pin spacing for traditional assembly methods.

Applications

• LED Chasers and Sequencers: Creating running light displays and visual effects.
• Educational Electronics: Teaching digital logic, counting principles, and sequential circuits.
• Frequency Division: Dividing clock frequencies by factors of 2 through 10.
• Event Counting: Tracking up to ten discrete events with visual indication.
• Timing and Control Systems: Generating sequential control signals for multi-step processes.

Why Choose the CD4017BC Johnson Counter? The CD4017BC remains one of the most popular and well-documented counter ICs available, with decades of proven reliability and an enormous wealth of project examples and tutorials. Its simple operation, wide voltage tolerance, and ability to drive LEDs directly make it particularly accessible for beginners, while its robust performance ensures it continues to serve in professional applications. Whether you’re building your first LED chaser or designing a sophisticated timing system, the CD4017BC delivers dependable sequential control every time.