The CD4017 is a decade counter and 10-output decoded decimal counter integrated circuit (IC). It's commonly used in electronic circuits for various applications, including sequential LED lighting, frequency dividers, and timer circuits. The CD4017 IC is designed to count in decimal from 0 to 9 and provide output signals corresponding to each count. Here are some key features and specifications of the CD4017 IC:
Decade Counter: The CD4017 is a 10-stage counter, which means it can count from 0 to 9, with each output representing a decimal digit.
Output Decoding: The CD4017 has 10 decoded outputs, each corresponding to one of the decimal digits (0 through 9). The active output advances by one count for each clock pulse.
Clock Input (CLK): It counts sequentially with each rising edge of the clock input signal. The clock signal is typically connected to an external source like an oscillator.
Reset (RST) Pin: The CD4017 includes a reset pin that allows you to reset the counter to 0. When a reset signal is applied, the counter restarts from 0.
Carry-Out (CO): The CO pin is used for cascading multiple CD4017 ICs to create larger counters. It generates a carry signal when the count reaches 10 (i.e., when it rolls over to 0).
Voltage Supply: The CD4017 typically operates from a voltage supply in the range of 3V to 15V, making it compatible with both 5V and 9V systems.
Package: The CD4017 is available in various package types, including DIP (Dual In-line Package) and surface-mount packages, making it suitable for different circuit designs.
Applications: The CD4017 is commonly used in applications where sequential counting or control of multiple outputs is required, such as LED chasers, digital clocks, and frequency dividers.
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