The CD4017 is a versatile decade counter/divider IC widely employed in counting applications and LED projects due to its 10 decoded outputs. It operates within a voltage range of 3V to 15V and features pins for output, ground, carry out, clock enable, clock, reset, and supply voltage. Available in both through-hole and SMD packages, it offers high-speed CMOS counting and TTL compatibility with a maximum clock frequency of 5.5MHz. Commonly used alongside LED matrices and chasers, it functions as a binary counter or decoder and facilitates divide-by-N counting. The IC incrementally counts from 0 to 9 upon receiving clock pulses, resetting to 0 after reaching 9. It allows for control over counting behavior via clock enable and reset pins, with the carry out pin signaling completion of counting. Its applications span LED projects, binary decoding, and remote metering in various industries.
Refer for detailed explanation about CD4017 - CD4017 IC Pinout, Description, Equivalents & Datasheet (components101.com)
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