🔍 Product Overview

The CD4017BE is a CMOS decade-counter integrated circuit that provides ten decoded outputs (Q0 through Q9). Each output goes high in sequence for one clock cycle, making it perfect for counting, sequencing, or dividing pulses. It includes a clock input, a reset input, a clock-inhibit (enable) input, and a carry-out output for chaining multiple devices.

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🚀 Why It’s Ideal for Your Projects

• Simple sequential control – Easily create LED chasers, step sequences or state machines by connecting each output to a load or logic stage.

• Low-power CMOS operation – With a supply voltage range from around 3 V up to ~18 V, it can be used in battery, 5 V logic or higher-voltage systems with stable behavior.

• Flexible counting and division – Beyond just counting to 10, you can reset early or inhibit the clock to create divide-by-N functions or partial sequences.

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📝 Key Features

• Decoded outputs: Q0–Q9 (ten individual outputs)

• Clock input (CLK): advances the count on a positive-edge transition of the clock signal

• Reset input (MR): when held high, resets the counter so Q0 goes high and counting restarts

• Clock-Inhibit (CI): when held high, the counter ignores clock pulses (pauses counting)

• Carry-Out (CO): generates a pulse after the counter completes a full cycle (e.g., when Q9 goes high) for cascading additional counters

• Supply voltage range: approximately 3 V to 18 V, typical use around 5 V or 12 V

• Package format: 16-pin dual in-line (DIP) or surface-mount equivalents

• Operating temperature: roughly –55 °C to +125 °C in many versions

• Typical maximum clock frequency: up to ~10 MHz (depending on VDD and conditions)

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🎯 Typical Applications

• LED sequencing and chaser circuits – Drive ten LEDs to light one after the other in a repeating loop.

• Frequency division – Use as a divide-by-10 counter in digital timer or pulse-counting circuits.

• Traffic lights or light-bar displays – Switch a series of lights in sequence for visual effect or status indication.

• Event counters and game logic – Reuse the decoded outputs to trigger different actions at different counts.

• Cascade counters for higher counts – Use the carry-out pin to drive another CD4017 for counts of 20, 30, or more states.

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✅ Why You’ll Love It

The CD4017BE makes sequential logic easy—no microcontroller required. With clear outputs for each count step, flexible reset and enable inputs, and broad voltage compatibility, it’s a core component for both beginner and advanced electronics. Whether you’re building a simple LED display, a programmable sequence module, or counting pulses in a measurement system, this decade counter offers reliable performance and simple integration.