CD4020 14-Bit Binary Ripple Counter IC


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SKU: NICCD4020 Categories: ,

CMOS Ripple-Carry Binary Counter/Divider

The CD4020 is a ripple-carry binary counter. All counter stages are master-slave flip flops. The state of a counter advances one count on the negative transition of each input pulse: a high level on the RESET line resets the counter to its all zeros state. Schmitt trigger action on the input-pulse line permits unlimited rise and fall times. All inputs and outputs are buffered.


  • Medium-speed operation
  • Fully static operation
  • Buffered inputs and outputs
  • 100% tested for quiescent current at 20 V
  • Standardized, symmetrical output characteristics
  • Common reset
  • 5-V, 10-V, and 15-V parametric ratings
  • Maximum input current of 1μA at 18 V over full package-temprature range; 100nA at 18 V and 25ºC
  • Noise margin (over full package-temprature range):
    1 V at VDD = 5V
    2 V at VDD = 10V
    2.5 V at VDD = 15V
  • Meets all requirements of JEDEC Tenative Standard No. 13B, “Standard Specifications for Description of `B’ Series CMOS Devices”
  • This is a Thru-Hole Device


  • Control counters
  • Timers
  • Frequency deviders
  • Time-delay circuits

CD4020 Datasheet

Data Sheet 

Weight 10 g


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Pin_Number Pin Name Description
10 Clock We can provide a clock pulse to the IC as an input signal with this pin.
11 Reset Reset pin is an input signal which is applied to reset the counter value.
1, 2, 3, 4, 5, 6, 7, 9, 12, 13, 14, 15 Output Q1, Q4, Q5, Q6, Q7, Q8, Q9, Q10, Q11, Q12, Q13, Q1 Buffered output signals.
8 Ground () This pin connects to the negative power supply or ground of the circuit.
16 Vdd This pin is connected to the power supply.

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CD4020 14-Bit Binary Ripple Counter IC