CD74HC4520E

Product Overview

• Category: Integrated Circuit
• Use: Counter/Divider
• Characteristics: High-Speed CMOS Logic, Dual Binary Ripple Counter
• Package: 16-pin DIP (Dual In-line Package)
• Essence: The CD74HC4520E is a dual binary ripple counter that can count up or down depending on the input signals.
• Packaging/Quantity: Available in tubes of 25 units or reels of 2,000 units.

Specifications

• Supply Voltage: 2V to 6V
• Operating Temperature Range: -55°C to +125°C
• Maximum Clock Frequency: 25 MHz
• Number of Counting Stages: 2
• Counting Sequence: Up or Down
• Reset Function: Yes
• Output Type: Buffered

Pin Configuration

The CD74HC4520E has a total of 16 pins. Here is the detailed pin configuration:

1. CLK (Clock Input for Counting)
2. RST (Reset Input)
3. Q1 (Least Significant Bit Output)
4. Q2 (Most Significant Bit Output)
5. GND (Ground)
6. Q3 (Unused Pin)
7. Q4 (Unused Pin)
8. Q5 (Unused Pin)
9. Q6 (Unused Pin)
10. Q7 (Unused Pin)
11. Q8 (Unused Pin)
12. Q9 (Unused Pin)
13. Q10 (Unused Pin)
14. VCC (Positive Power Supply)
15. Q11 (Unused Pin)
16. Q12 (Unused Pin)

Functional Features

• Dual binary ripple counter with up/down counting capability.
• Can be easily reset using the RST input.
• Buffered outputs provide high driving capability.
• Wide operating voltage range allows for versatile applications.
• High-speed CMOS logic ensures fast and reliable operation.

Advantages and Disadvantages

Advantages: - Versatile counting functionality with up/down capability. - Buffered outputs provide strong driving capability. - Wide operating voltage range allows for flexible use in various systems. - High-speed CMOS logic ensures fast and reliable operation.

Disadvantages: - Limited number of counting stages (2 stages). - Unused pins may require additional care during circuit design.

Working Principles

The CD74HC4520E operates as a dual binary ripple counter. It counts up or down based on the input signals applied to the CLK pin. The counting sequence can be controlled using external circuitry. The RST input allows for easy resetting of the counter to its initial state. The buffered outputs provide strong driving capability, making it suitable for driving other digital circuits.

Detailed Application Field Plans

The CD74HC4520E can be used in various applications that require counting or dividing functions. Some potential application fields include:

1. Frequency Division: The CD74HC4520E can be used to divide an input frequency by a specific factor, allowing for frequency reduction or synchronization with other components.
2. Timekeeping: It can be utilized in timekeeping circuits where precise timing intervals are required.
3. Event Counting: The counter can be employed to count events or pulses generated by external sensors or devices.
4. Industrial Control Systems: The CD74HC4520E can find applications in industrial control systems that require counting or timing functions.

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the CD74HC4520E:

1. CD74HC4040E: 12-stage binary ripple counter with a higher number of counting stages.
2. CD74HC163E: Synchronous 4-bit binary counter with parallel load capability.
3. CD74HC191E: Synchronous 4-bit up/down binary counter with parallel load capability.

These alternative models can be considered based on specific requirements and system constraints.

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