Encyclopedia Entry: 74AC521MTCX

Product Overview

Category

The 74AC521MTCX belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronic systems for various applications, including data storage, address decoding, and multiplexing.

Characteristics

• The 74AC521MTCX is a high-speed, low-power octal D-type flip-flop with 3-state outputs.
• It operates on a wide voltage range, typically between 2V and 6V.
• This IC offers excellent noise immunity and high-speed performance.
• It is designed to be compatible with both TTL and CMOS logic levels.

Package and Quantity

The 74AC521MTCX is available in a small outline surface mount package (TSSOP) with 20 pins. It is typically sold in reels or tubes containing multiple units.

Essence

The essence of the 74AC521MTCX lies in its ability to store and manipulate digital information efficiently within electronic systems.

Packaging/Quantity

The 74AC521MTCX is usually packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Supply Voltage Range: 2V to 6V
• High-Level Input Voltage: 2V to Vcc
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: Vcc - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: X MHz (specific value depends on the manufacturer's datasheet)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74AC521MTCX has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

1. Pin 1: Output Enable (OE)
2. Pin 2: Data Input D0
3. Pin 3: Data Input D1
4. Pin 4: Data Input D2
5. Pin 5: Data Input D3
6. Pin 6: Data Input D4
7. Pin 7: Data Input D5
8. Pin 8: Data Input D6
9. Pin 9: Data Input D7
10. Pin 10: Clock Input (CLK)
11. Pin 11: Clear Input (CLR)
12. Pin 12: Clock Enable (CE)
13. Pin 13: Output Q0
14. Pin 14: Output Q1
15. Pin 15: Output Q2
16. Pin 16: Output Q3
17. Pin 17: Output Q4
18. Pin 18: Output Q5
19. Pin 19: Output Q6
20. Pin 20: Output Q7

Functional Features

The 74AC521MTCX offers the following functional features:

• Octal D-type flip-flop with 3-state outputs.
• Positive-edge triggered clock input (CLK).
• Asynchronous clear input (CLR) for resetting all flip-flops.
• Output enable input (OE) for enabling/disabling the outputs.
• Clock enable input (CE) for controlling the clock input.

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data processing.
• Wide voltage range compatibility enhances versatility in various electronic systems.
• Excellent noise immunity ensures reliable performance.
• Compact surface mount package saves board space.

Disadvantages

• Limited number of flip-flops (8) may restrict certain applications requiring more storage capacity.
• Surface mount package may require specialized equipment for soldering and replacement.

Working Principles

The 74AC521MTCX operates based on the principles of digital logic. It utilizes flip-flops to store and manipulate binary information. The clock input triggers the transfer of data from the input pins (D0-D7) to the corresponding output pins (Q0-Q7). The clear input resets all flip-flops, while the output enable input controls the state of the outputs. The clock enable input determines whether the clock input is active or not.

Detailed Application Field Plans

The 74AC521MTCX finds applications in various fields, including:

1. Address decoding in microprocessors and memory systems.
2. Data multiplexing in communication systems.
3. Register storage in digital signal processing.
4. Control circuitry in industrial automation.
5. Interface circuitry in computer peripherals.

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the 74AC521MTCX. Some notable alternatives include:

1. 74HC521: A CMOS version with similar characteristics and pin