Encyclopedia Entry: 74FCT521CTQG8

Product Overview

Category

The 74FCT521CTQG8 belongs to the category of integrated circuits (ICs) and specifically falls under the family of flip-flops.

Use

This product is commonly used in digital electronic systems for storing and transferring data. It serves as a reliable memory element that can retain information even when power is removed.

Characteristics

• The 74FCT521CTQG8 is a high-speed, low-power octal D-type flip-flop.
• It operates on a wide voltage range, typically between 4.5V and 5.5V.
• This IC offers excellent noise immunity, making it suitable for use in noisy environments.
• It features a compact package size, allowing for space-efficient circuit designs.

Package and Quantity

The 74FCT521CTQG8 is available in a small outline integrated circuit (SOIC) package. Each package contains one unit of the IC.

Specifications

• Number of Flip-Flops: 8
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Clock Frequency: 100 MHz
• Propagation Delay: 6 ns (typical)

Pin Configuration

The pin configuration of the 74FCT521CTQG8 is as follows:

+---+--+---+ Q1 |1 20| VCC Q2 |2 19| D0 Q3 |3 18| D1 Q4 |4 17| D2 Q5 |5 16| D3 Q6 |6 15| D4 Q7 |7 14| D5 Q8 |8 13| D6 GND |9 12| D7 CP |10 11| OE# +--------+

Functional Features

• The 74FCT521CTQG8 operates as a positive-edge triggered flip-flop.
• It has an output enable (OE#) pin, which allows for the tri-state output control.
• The IC supports parallel data input (D0-D7) and parallel data output (Q1-Q8).
• It offers synchronous operation with a common clock input (CP).

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer. - Low power consumption contributes to energy efficiency. - Wide voltage range compatibility enhances versatility.

Disadvantages: - Limited number of flip-flops may restrict certain applications requiring more storage capacity. - Propagation delay may affect real-time applications with strict timing requirements.

Working Principles

The 74FCT521CTQG8 functions based on the principles of sequential logic. When the clock signal transitions from low to high (positive edge), the input data is captured and stored in the flip-flops. The stored data can then be accessed through the output pins. The output enable pin allows for controlling the output state.

Application Field Plans

The 74FCT521CTQG8 finds application in various digital systems, including but not limited to: - Microprocessors and microcontrollers - Data communication systems - Memory modules - Industrial automation equipment

Alternative Models

For those seeking alternative options, the following models provide similar functionality: - 74HC521 - 74LS521 - CD74HCT521E - SN74F521DW

These alternatives offer comparable features and can be considered based on specific project requirements.

In conclusion, the 74FCT521CTQG8 is a versatile octal D-type flip-flop IC that offers high-speed operation, low power consumption, and excellent noise immunity. Its compact package size makes it suitable for space-constrained designs. With its wide range of applications and availability of alternative models, this IC serves as a reliable component in digital electronic systems.

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