Encyclopedia Entry: 74HCT4520DB,118

Product Overview

Category

The 74HCT4520DB,118 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronic circuits for various applications such as counters, timers, and frequency dividers.

Characteristics

• High-speed operation
• Wide operating voltage range
• Low power consumption
• Schmitt-trigger inputs for noise immunity
• Compatible with TTL levels

Package

The 74HCT4520DB,118 is available in a small-outline package (SOIC) with 16 pins.

Essence

The essence of this product lies in its ability to provide precise timing and counting functions in digital circuits.

Packaging/Quantity

The 74HCT4520DB,118 is typically packaged in reels or tubes, containing a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +125°C
• Maximum Clock Frequency: 25 MHz
• Maximum Counting Range: 16 bits

Detailed Pin Configuration

1. CLK (Clock Input)
2. RST (Reset Input)
3. Q0-Q3 (Parallel Output Pins)
4. Q4-Q7 (Parallel Output Pins)
5. Q8-Q11 (Parallel Output Pins)
6. Q12-Q15 (Parallel Output Pins)
7. TC (Terminal Count Output)
8. GND (Ground)
9. QD (Serial Data Output)
10. CP (Clock Pulse Input)
11. MR (Master Reset Input)
12. CE (Count Enable Input)
13. QA (Parallel Input Pin)
14. QB (Parallel Input Pin)
15. QC (Parallel Input Pin)
16. VCC (Supply Voltage)

Functional Features

• Asynchronous parallel load capability
• Synchronous counting mode
• Cascadable for larger counting ranges
• Built-in ripple-blanking input/output
• Direct reset and load control inputs

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient digital circuit design.
• Wide operating voltage range provides flexibility in various applications.
• Low power consumption contributes to energy-efficient designs.
• Schmitt-trigger inputs ensure noise immunity, enhancing reliability.

Disadvantages

• Limited maximum clock frequency may restrict its use in high-frequency applications.
• The 16-bit counting range may not be sufficient for certain complex applications.

Working Principles

The 74HCT4520DB,118 is a synchronous binary counter with an asynchronous parallel load capability. It operates based on the input clock pulses and counts up or down depending on the count enable (CE) input. The output can be cascaded to achieve larger counting ranges. The built-in ripple-blanking input/output allows for easy integration into digital systems.

Detailed Application Field Plans

The 74HCT4520DB,118 finds applications in various fields, including: 1. Digital frequency dividers 2. Timer circuits 3. Industrial automation systems 4. Communication equipment 5. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74HCT4520DB,118 include: - CD4520 - MC14520 - SN74LS4520 - HEF4520

These alternatives can be considered based on specific requirements and availability.

In conclusion, the 74HCT4520DB,118 is a versatile integrated circuit used in digital electronic circuits for precise timing and counting functions. Its high-speed operation, wide voltage range, and low power consumption make it suitable for various applications. However, its limited clock frequency and counting range should be considered when selecting alternative models for specific requirements.

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