2pcs cd4017 dip ic

🔹 2PCS CD4017BE – CMOS Decade Counter/Divider IC (DIP-16)

A versatile CMOS integrated circuit that functions as a 5-stage Johnson decade counter with 10 decoded outputs. It sequentially advances one of its ten outputs high for each clock pulse, making it ideal for projects requiring sequential control, lighting effects, frequency division, and simple state machines.

✅ Specifications:

• Part Number: CD4017B, CD4017BE (DIP package)

• Type: CMOS Decade Counter/Divider with 10 Decoded Outputs

• Supply Voltage Range: 3V to 15V (Wide range)

• Clock Frequency: Up to ~5 MHz at 10V supply

• Output Current: Up to 10mA source/sink per pin (at VDD=10V)

• Input Current (Max): 1µA at 15V (Very high input impedance)

• Package: DIP-16 (Dual In-Line, 16-pin, through-hole)

• Operating Temperature: -55°C to +125°C

• Key Pins:

  • CLOCK (Pin 14): Counts on the rising edge.

  • RESET (Pin 15): High level resets count to output 0 (Q0 high).

  • CLOCK INHIBIT (Pin 13): High level disables counting (holds state).

  • CARRY OUT (Pin 12): Pulses every 10 counts; useful for cascading.

  • Q0-Q9 (Pins 1-7, 9-11): The 10 sequential outputs.

• Quantity: 2 pieces

⚙️ Features:

• Simple Sequential Control: Provides easy “walking LED” or “Knight Rider” effects without a microcontroller.

• Low Power Consumption: CMOS technology draws very little quiescent current.

• Wide Voltage Operation: Works from 3V (for battery projects) to 15V.

• Bounce-Free Operation: Not affected by switch bounce; perfect for manual clocking with a push button.

• Easy to Cascade: Multiple CD4017s can be chained using the Carry Out pin for longer sequences (e.g., 20, 30 steps).

📦 Typical Applications:

• Sequential LED Chasers & Light Displays: Classic “Knight Rider” scanner, running lights, and LED cubes.

• Frequency Dividers: Divide a clock signal by 10 (or other values by using reset).

• Event Sequencers: Control steps in a simple process or game.

• Random Number Generators: When clocked with a fast, unstable source.

• Toy & Hobby Electronics: Used in dice rollers, quiz buzzers, and interactive displays.

• Switch Debounced Pulse Counter: Count button presses with a clean output.

🔧 Basic Connection Example (LED Chaser):

1. Power: Connect VDD (Pin 16) to positive supply (5V-12V) and VSS (Pin 8) to ground.

2. Clock: Connect a push button (with a pull-down resistor) or an oscillator (555 timer) to CLOCK (Pin 14).

3. Reset & Inhibit: Connect RESET (Pin 15) and CLOCK INHIBIT (Pin 13) to ground for normal operation.

4. Outputs: Connect LEDs (with 220Ω-1kΩ series resistors) from Q0-Q9 to ground.

5. Operation: Each clock pulse will move the active-high output to the next pin (Q0→Q1→…→Q9, then back to Q0).

⚠️ Important Design Notes:

• Unused Inputs: All unused CMOS inputs MUST be tied to VDD or VSS (ground) to prevent erratic behavior and reduce power consumption.

• Static Sensitivity (ESD): Handle with care. CMOS chips are susceptible to static discharge.

• Output Current: Do not exceed the output current rating. For driving higher-current loads (relays, motors), use a transistor buffer.

• Power Supply Bypassing: Always place a 0.1µF ceramic capacitor close to the IC between VDD and VSS to ensure stable operation.

• Manual Clocking: For a push-button clock, use a simple RC debounce circuit or rely on the chip’s inherent immunity.