CD4017 Decade Counter IC

CD4017 Decade Counter IC

The CD4017 IC is a CMOS decade counter with 10 decoded outputs, widely used for counting, sequencing, and timing applications. It advances one output HIGH at a time with each clock pulse, making it ideal for LED chasers, sequence controllers, and digital counting circuits.

Unlike TTL ICs, the CD4017 operates over a wide voltage range, making it suitable for both low-power and battery-operated applications.

Key Features

• Type: Decade Counter / Divider IC
• Outputs: 10 decoded outputs (Q0 to Q9)
• Sequential Operation: One output HIGH at a time
• Wide Voltage Range: 3V to 15V operation
• Low Power Consumption: CMOS technology
• Clock Input: Advances output on each pulse
• Reset Function: Resets count to Q0
• Carry Output: For cascading multiple ICs

Applications

• LED Chaser Circuits: Running light effects
• Sequence Control: Step-by-step operations
• Digital Counters: Event counting
• Frequency Division: Divide-by-10 counter
• DIY Electronics Projects: Timing and automation

Technical Specifications

• IC Type: CD4017 (CMOS Logic IC)
• Supply Voltage (Vdd): 3V – 15V
• Number of Outputs: 10 (decoded)
• Clock Trigger: Positive edge
• Reset Input: Active HIGH
• Carry Output: Available for cascading
• Package: DIP-16

Product Example

CD4017 Decade Counter IC (DIP-16)
A versatile IC for sequencing and counting applications.

Why Choose CD4017?

The CD4017 is perfect for simple sequencing and counting tasks without needing complex programming. Its ease of use and wide voltage range make it ideal for beginners and practical electronics projects.

⚠️ Important Notes

• Ensure proper clock signal input
• Use reset pin to control sequence length
• Avoid floating inputs—tie unused pins properly
• Works best with stable power supply
• Handle carefully to avoid static damage