CD4521BPW

Product Overview

Category

CD4521BPW belongs to the category of integrated circuits (ICs).

Use

It is commonly used in digital electronics for various applications such as timing, counting, and sequencing.

Characteristics

• CD4521BPW is a 24-stage frequency divider and oscillator.
• It operates at a wide range of supply voltages, typically between 3V and 18V.
• The device has a high noise immunity and can withstand significant voltage fluctuations.
• It offers low power consumption, making it suitable for battery-powered devices.
• CD4521BPW is designed to be compatible with both TTL and CMOS logic levels.

Package

The CD4521BPW is available in a 16-pin dual in-line package (DIP). This package provides easy integration into circuit boards and allows for efficient heat dissipation.

Essence

The essence of CD4521BPW lies in its ability to divide frequencies and generate precise timing signals, making it an essential component in many digital systems.

Packaging/Quantity

CD4521BPW is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage: 3V to 18V
• Operating Temperature Range: -40°C to +85°C
• Input Voltage High Level (VIH): 2V (minimum)
• Input Voltage Low Level (VIL): 0.8V (maximum)
• Output Current: ±10mA
• Maximum Clock Frequency: 6MHz

Detailed Pin Configuration

The CD4521BPW has 16 pins, each serving a specific function:

1. VDD: Positive power supply
2. Q4: Output stage 4
3. Q5: Output stage 5
4. Q6: Output stage 6
5. Q7: Output stage 7
6. Q8: Output stage 8
7. Q9: Output stage 9
8. Q10: Output stage 10
9. Q11: Output stage 11
10. GND: Ground
11. CLOCK: Clock input
12. ENABLE: Enable input
13. RESET: Reset input
14. Q3: Output stage 3
15. Q2: Output stage 2
16. Q1: Output stage 1

Functional Features

• Frequency Division: CD4521BPW can divide an input frequency by a factor of up to 2^24 (16,777,216).
• Oscillator Function: It can generate an internal clock signal using an external resistor and capacitor.
• Enable and Reset Control: The device offers inputs for enabling or disabling the frequency division and resetting the counter.
• Multiple Outputs: CD4521BPW provides 24 output stages, allowing for versatile signal routing.

Advantages and Disadvantages

Advantages

• Wide supply voltage range enables compatibility with various systems.
• High noise immunity ensures reliable operation in noisy environments.
• Low power consumption makes it suitable for battery-powered applications.
• Versatile output stages allow for flexible signal manipulation.

Disadvantages

• Limited maximum clock frequency may restrict its use in high-speed applications.
• Lack of built-in protection features against voltage spikes or ESD events.

Working Principles

CD4521BPW operates based on the principle of frequency division. When a clock signal is applied to the CLOCK input, the device divides the frequency by a factor determined by the internal counter. The divided frequency appears at the corresponding output stage pins. The enable and reset inputs provide control over the frequency division process.

Detailed Application Field Plans

CD4521BPW finds applications in various fields, including:

1. Timing Circuits: It is used to generate precise timing signals in applications such as clocks, timers, and event sequencing.
2. Frequency Division: CD4521BPW is employed to divide frequencies in communication systems, digital counters, and frequency synthesizers.
3. Industrial Automation: It can be utilized for controlling and synchronizing processes in industrial automation systems.
4. Automotive Electronics: CD4521BPW finds use in automotive applications like engine control units, dashboard displays, and lighting systems.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to CD4521BPW include:

1. CD4017BE: A decade counter with 10 output stages.
2. CD4024BE: A 7-stage binary counter with an integrated oscillator.
3. CD4040BE: A 12-stage binary counter with a built-in oscillator.

These alternatives provide different features and pin configurations, allowing users to choose the most suitable option for their specific requirements.

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