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 No | Pin Name | Description |
---|---|---|
1 | Q3 | Output 3 of Counter |
2 | P3 | Preset Input 3 |
3 | PE | Preset Enable Pin |
4 | INHIBIT | Inhibit OR Disable pin |
5 | P0 | Preset Input 0 |
6 | CLK | Clock Signal Pin |
7 | Q0 | Output 0 of Counter |
8 | VSS | Source Supply |
9 | Q1 | Output 1 of Counter |
10 | RESET | Reset Pin |
11 | P1 | Preset Input 1 |
12 | “0” | Zero Output Pin |
13 | CF | Cascade Pin |
14 | P2 | Preset Input 2 |
15 | Q2 | Output 2 of Counter |
16 | VDD | Drain 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