CD40102-Presettable 2-decade BCD down counter


CD40102 belongs to the 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD40102 has Presettable 2-decade BCD down counter

CD40102 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 very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.

CD40102 Features

  • High Voltage Type (20V Rating)
  • CD40102BMS: 2-Decade BCD Type
  • Synchronous or Asynchronous Preset
  • Medium Speed Operation
    • fCL = 3.6MHz (Typ) at 10V
  • Cascadable
  • 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
  • Noise Margin (Over Full Package Temperature Range):
    • 1V at VDD = 5V
    • 2V at VDD = 10V
    • 2.5V at VDD = 15V

CD40102 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

CD40102 Pinout Diagram

CD40102 Pin Description

Pin NoPin NameDescription
1CLKClock Pin
2CLEAR’Invert Clear Pin
3(CARRY-IN)’/(COUNTER ENABLE)’Invert Carry-input Pin
4J0Output Bit 1 Of Counter
5J1 Output Bit 2 Of Counter
6J2 Output Bit 3 Of Counter
7J3 Output Bit 4 Of Counter
8VSSSupply Voltage
9(ASYNC: PRESET ENABLE)’Invert Asynchronous Preset Enable Pin
10J4 Output Bit 5 Of Counter
11J5 Output Bit 6 Of Counter
12J6 Output Bit 7 Of Counter
13J7 Output Bit 8 Of Counter
14(ZERO DETECT)’Invert Zero Detect Pin
15 (SYNC: PRESET ENABLE)’/(CARRY-OUT)’ Invert synchronous Preset Enable Pin
16VDDDrain Voltage

CD40102 Circuit


  • Divide-By- “N” Counters
  • Programmable Times
  • Interrupt Timers
  • Cycle/Program Counter

CD40102 Alternative Equivalent

Download CD40102-Presettable 2-decade BCD down counter Datasheet from the link given below.