IC 74HC4017 5-stage Johnson Decade Counter 10 Decoded Outputs

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  • Jameco Part no.: 45891
  • Manufacturer: Major Brands
  • Manufacturer no.: 74HC4017
  • HTS code: 8542390000
  • Web Exclusive
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Johnson Decade Counter with 10 Decoded Outputs DIP-16

The 74HC4017 is a high-speed Si-gate CMOS devices and is pin compatible with the "4017" of the "4000B" series. They are specified in compliance with JEDEC standard no. 7A. The 74HC4017 is a 5-stage Johnson decade counters with 10 decoded active HIGH outputs (Q0 to Q9), an active LOW output from the most significant flip-flop (Q5-9), active HIGH and active LOW clock inputs (CP0 and CP1) and an overriding asynchronous master reset input (MR).

The counter is advanced by either a LOW-to-HIGH transition at CP0 while CP1 is LOW or a HIGH-to-LOW transition at CP1 while CP0 is HIGH (see also function table). When cascading counters, the Q5-9 output, which is LOW while the counter is in states 5, 6, 7, 8 and 9, can be used to drive the CP0 input of the next counter. A HIGH on MR resets the counter to zero (Q0 = Q5-9 = HIGH; Q1 to Q9 = LOW) independent of the clock inputs (CP0 and CP1). Automatic code correction of the counter is provided by an internal circuit: following any illegal code the counter returns to a proper counting mode within 11 clock pulses.


  • Output capability: standard
  • ICC category: MSI
  • DIP-16
  • 74HC series

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