CD4017BE Decade Counter Logic IC DIP-16

CD4017BE Decade Counter Logic IC DIP-16 is a highly versatile and reliable CMOS integrated circuit that performs counting and decoding functions in a single package. This is a 5-stage Johnson counter with 10 decoded outputs, meaning it can sequentially activate ten separate outputs based on an input clock signal. Often referred to as a “Decade Counter” or “Divider,” the CD4017BE is essential for digital circuit designs requiring sequential switching, timing control, or matrix decoding. Because it operates across a wide supply voltage range and consumes very little power, the CD4017BE is the favorite choice for driving sequential displays, running simple animations, or building basic logic controllers where circuit simplicity is key. Engineers and students use this IC to build robust, predictable sequential logic with minimal external components.

Key Features:

• 10 Decoded Outputs: The counter provides 10 mutually exclusive outputs (Q0 to Q9), activating one at a time sequentially upon receiving a clock pulse.
• Wide Operating Voltage: Functions reliably across a broad supply voltage range, typically from 3V to 18V (for the CD4000 series), making it compatible with TTL and CMOS logic families.
• High Noise Immunity: As a CMOS device, it exhibits excellent noise immunity, ensuring stability in various electronic environments.
• Low Power Consumption: Consumes minimal current, especially in standby mode, which makes it ideal for battery-powered projects.
• Carry-Out Signal: Includes a dedicated carry-out pin that completes one cycle every 10 clock pulses, allowing you to easily cascade multiple CD4017 ICs for longer counting sequences (20, 30, or more stages).

Technical Specifications:

• Logic Family: CMOS (CD4000 Series)
• Function: Decade Counter/Divider
• Number of Stages: 5-stage Johnson counter
• Operating Voltage Range (V_DD): 3V to 18V (Absolute Max 20V)
• Output High/Low Current: Varies with V_DD (e.g., 6.8 mA at 10V)
• Max Clock Frequency: Typically 5 MHz at 15V
• Package Type: DIP-16 (Dual In-line Package)

Mechanical Specifications:

• Pin Count: 16 Pins
• Mounting: Through-Hole
• Material: Molded plastic housing.

Dimensions:

• Length (Body): ~19.3 mm
• Width (Body): ~6.4 mm
• Pin Pitch (Spacing between pins): 2.54 mm (0.1 in)
• Row Spacing: ~7.62 mm (0.3 in)

Pinout and Wiring:

• Pin 1-7, 9-11 (Q0 to Q9): The 10 Decoded Outputs. Only one output is HIGH at a time.
• Pin 8 (V_SS/GND): Connect to the circuit ground (0V).
• Pin 12 (C_OUT): Carry-Out pin. Produces a pulse every 10 input clock cycles for cascading.
• Pin 13 (E/CE – Clock Enable): Active LOW input. Connect to GND to enable the clock. Connect to HIGH to disable the clock (pause counting).
• Pin 14 (CLK – Clock Input): Input pin for the signal that advances the counter (e.g., a pulse from a 555 timer).
• Pin 15 (R – Reset): Active HIGH input. Connect momentarily to V_DD to reset the counter back to Q0. Connect to GND for normal counting operation.
• Pin 16 (V_DD): Connect to the positive power supply (e.g., 5V, 9V, 12V).
• Wiring Note: Always connect Pin 13 (Clock Enable) and Pin 15 (Reset) to either V_DD or GND if you are not actively using them, never leave them floating.

Datasheet Reference:

• Download Datasheet

Commonly Used in:

• Hobby Electronics: A foundational component for beginners learning sequential digital logic.
• Automotive Applications: Used in simple blinkers, warning lights, and sequential indicators due to its high voltage tolerance.
• Industrial Control: Employed in basic timing and sequence controllers.

Applications:

• Sequential LED Chaser Circuits: Creates the classic “Knight Rider” or running light effects for displays and toys.
• Frequency Division: Easily divides an input clock frequency by 10, 20, 30, or any combination of the 10 outputs.
• Digital Timers: Forms the core logic for long-duration timers when cascaded with external clock sources like the 555 timer.
• Matrix Display Scanning: Controls the row or column selection in small LED matrix displays.

Equivalent Models:

• CD4022: An Octal (divide-by-8) Counter, useful when you need fewer than 10 steps.
• 74HC4017: A high-speed CMOS equivalent, offering faster clocking capability but often requiring a standard 5V supply.

Package Includes:

• 1 x CD4017BE Decade Counter Logic IC DIP-16