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CD4040 - 12-Stage Ripple Carry Binary Counter IC

CD4040 - 12-Stage Ripple Carry Binary Counter IC-Robocraze

CD4040 - 12-Stage Ripple Carry Binary Counter IC

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  • Medium-speed operation
  • Fully static operation
  • Buffered inputs and outputs
  • 100% tested for quiescent current at 20 V
  • Standardized, symmetrical output characteristics
  • Fully static operation
  • Common reset
  • 5-V, 10-V, and 15-V parametric ratings
  • Maximum input current of 1 µA at 18 V over full package-temperature range; 100 nA at 18 V and 25°C
  • Noise margin (over full package-temperature range):
    1 V at VDD = 5 V
    2 V at VDD = 10 V
    2.5 V at VDD = 15 V

CD4040 - 12-Stage Ripple Carry Binary Counter IC

The CD4x Series CD4040 is a ripple-carry binary counter that features 12 stages, push-pull type, and balanced outputs, with standard speed (TPD > 50ns). All counter stages are master-slave flip-flops. Supports wide input voltage ranges from 3V to 18V. The maximum input current at 18V is 1 uA whereas 100 nA at 18V and 25°C.

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's trigger action on the input-pulse line permits unlimited rise and fall times. All inputs and outputs are buffered. 16 Pin DIP is available in a hermetic dual-in-line ceramic package. 

We also have a CD4020 with similar features. The differences are CD4020 is a 14 Stage binary counter whereas CD4040 is a 12 Stage binary counter and there is a difference between the pin layout.


Pinout of CD4040 IC


  • Control Counters
  • Timers
  • Frequency Dividers
  • Time-Delay Circuits

Package Includes:

Selected qty of IC - CD4040


VCC (Min) 3V 
VCC (Max) 18V
Bits (#) 12
Voltage (Nom) 5V, 10V, and 15V
F at nom voltage (Max) 8MHz
ICC at nom voltage (Max) 0.03mA
tpd at nom Voltage (Max)(ns) 160ns
IOL (Max) 1.5mA
IOH (Max) -1.5mA
Function Counter
Type Binary
Operating temperature range (C) -55 to 125