CD4033 Decade Counter


CD4033 belongs to the 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD4033 has a Decade of Counter

CD4033 has a supply voltage range of 5V to 20V, which is much higher than any contemporary logic family. It has buffered output which improves transfer characteristics by providing a very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.

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CD4033 Decade-Counter-IC

CD4033 Features

  • High-Voltage Types (20V Rating)
  • Counter and 7 Segment Decoding in One Package
  • Easily Interfaced with 7 Segment Display Types
  • Fully Static Counter Operation DC to 6MHz (typ.) at VDD =10V
  • Ideal for Low-Power Displays
  • “Ripple Blanking” and Lamp Test
  • 100% Tested for Quiescent Current at 20V
  • Buffered Inputs and Outputs
  • Standard Symmetrical Output Characteristics
  • 100% Tested for Maximum Quiescent Current at 20V
  • 5V, 10V, and 15V Parametric Ratings
  • Maximum Input Current of 1μA at 18V Over Full Package-Temperature Range; 100nA at 18V and +25oC

CD4033 Specifications

Absolute Maximum Ratings

  • DC Supply Voltage Range, (VDD): -0.5V to +20V (Voltage Referenced to VSS Terminals)
  • Input Voltage Range, All Inputs: -0.5V to VDD +0.5V
  • DC Input Current, Any One Input: ±10mA
  • Operating Temperature Range: -55oC to +125oC Package Types D, F, K, H
  • Storage Temperature Range (TSTG): -65oC to +150oC
  • Lead Temperature (During Soldering): +265oC
    • At Distance 1/16 ± 1/32 Inch (1.59mm ± 0.79mm) from case for 10s Maximum

CD4033 Pinout Diagram


CD4033 Pin Description

Pin NoPin NameDescription
1CLKClock Pin
2CLK INHIBITClock Inhibit Pin
3RIPPLE BLANKING INRipple Blanking Input Pin
4RIPPLE BLANKING OUT Ripple Blanking Output Pin
5CARRYOUTCarry Output Pin
6fDecade Output Pin f
7g Decade Output Pin (g)
8VSSSupply Voltage
9d Decade Output Pin d
10a Decade Output Pin a
11e Decade Output Pin (e)
12b Decade Output Pin b
13c Decade Output Pin c
14LAMP TESTLamp Test Pin
15RESETReset Pin
16VDDDrain Voltage

CD4033 Circuit


  • Decade Counting 7 Segment Decimal Display
  • Frequency Division 7 Segment Decimal Displays
  • Clocks, Watches, Timers (e.g. ÷ 60, ÷ 60, ÷12 Counter/ Display
  • Counter/Display Driver For Meter Applications

CD4033 Alternative Equivalent

CD4059, CD4526

Download the CD4033 Decade Counter Datasheet from the link given below.