CD4522 Programmable BCD Divide-by-N Counter – Datasheet

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CD4522 is a part of the CD4000 IC series. CD4522 is a Programmable BCD Divide-by-N Counter IC. This programmable BCD counter IC has a decoded “O” state output for divide-by-N applications. In single-stage operation, the “O” output is tied to the Preset Enable input. The IC offers cascading feedback feature that allows multiple stage divide-by-N operation without any external gating. A HIGH on the clock Inhibit disables the pulse-counting function. A HIGH on the Master Reset asynchronously resets the divide-by-N operation. The IC is always available in a 16-pin hermetically sealed package. CD4522 offers features such as ESD barring and thermal overload protection, making it ideal to be used for several logic design/DLD applications.

What is a Divide by N Counter?

Divide by N counter are simple generic counter that can divide the input clock frequency by a factor of N. for example, in the case of a divide by 2 counter (N=2), if you cascade four D flip-flops, then the output of every stage is divided by 2, if you are taking the output from the 4th flip-flop, then its output clock frequency is equal to 16 (2^4).

CD4522 Key Features

  • Internally synchronous for high internal and external speeds.
  • Logic edge clocked design increments on positive Clock transition or on negative Clock Inhibit transition.
  • 100% tested for quiescent current at 20-V.
  • 5-V, 10-V, and 15-V parametric ratings.
  • Standard symmetrical output characteristics.

CD4522 Pinout

Pin NoPin NameDescription
1Q3Output 3 of Counter
2P3Preset Input 3
3PEPreset Enable Pin
4INHIBITInhibit OR Disable pin
5P0Preset Input 0
6CLKClock Signal Pin
7Q0Output 0 of Counter
8VSSSource Supply
9Q1Output 1 of Counter
10RESETReset Pin
11P1Preset Input 1
12“0”Zero Output Pin
13CFCascade Pin
14P2Preset Input 2
15Q2Output 2 of Counter
16VDDDrain Supply

Application

  • Frequency synthesizers
  • Phase-locked loops
  • Programmable down counters
  • Programmable frequency dividers

CD4522 Datasheet

You can download the datasheet for CD4522 Programmable BCD Divide-by-N Counter IC from the link given below:

See Also: CD4584 Hex Schmitt Trigger – Datasheet | CD4556 Dual Binary 1 of 4 Decoder Inverter – Datasheet | CD4543 BCD to 7-Segment Decoder – Datasheet