Encyclopedia Entry: 74F273SJ

Product Overview

Category

The 74F273SJ belongs to the category of integrated circuits (ICs) and specifically falls under the family of flip-flops.

Use

This product is primarily used in digital electronic systems for storing and manipulating binary data. It serves as a fundamental building block for various applications, including memory units, counters, registers, and sequential logic circuits.

Characteristics

• The 74F273SJ is a D-type flip-flop with eight individual flip-flops integrated into a single package.
• It operates on a wide voltage range, typically between 4.5V and 5.5V.
• The flip-flop has a high-speed operation, making it suitable for applications requiring quick data storage and retrieval.
• It offers excellent noise immunity and robustness against electrical disturbances.
• The 74F273SJ is designed to be compatible with other TTL (Transistor-Transistor Logic) devices, ensuring seamless integration within existing digital systems.

Package and Quantity

The 74F273SJ is commonly available in a 20-pin plastic dual in-line package (PDIP). Each package contains one unit of the flip-flop.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Input/Output Compatibility: TTL
• Maximum Clock Frequency: 100 MHz
• Propagation Delay Time: 8 ns (typical)

Pin Configuration

The pin configuration of the 74F273SJ is as follows:

+---+--+---+ Q0 |1 20| VCC Q1 |2 19| CLR Q2 |3 18| D3 Q3 |4 17| D2 Q4 |5 16| D1 Q5 |6 15| D0 Q6 |7 14| CLK Q7 |8 13| GND GND |9 12| OE CP |10 11| Q7' +--------+

Functional Features

• The 74F273SJ operates on a positive-edge triggered clock, allowing data to be captured and stored at the rising edge of the clock signal.
• It features an asynchronous clear (CLR) input, which resets all flip-flops to a known state when activated.
• The output state of each flip-flop can be individually accessed through the corresponding Q0-Q7 pins.
• The device also includes an output enable (OE) pin, which allows for tri-state operation, enabling multiple devices to share a common bus.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data processing. - Excellent noise immunity ensures reliable performance in noisy environments. - Compatibility with TTL devices simplifies integration into existing systems.

Disadvantages: - Limited voltage range may restrict compatibility with certain applications. - The package size may not be suitable for space-constrained designs.

Working Principles

The 74F273SJ is based on the principles of sequential logic. Each flip-flop within the device stores a single bit of information, which can be either a logic high or low. The clock signal triggers the transfer of data from the input (D) to the output (Q) of each flip-flop. The asynchronous clear input allows for resetting the flip-flops to a predefined state. By combining multiple flip-flops, complex digital circuits can be constructed.

Application Field Plans

The 74F273SJ finds extensive use in various digital systems, including: - Microprocessors and microcontrollers - Memory units (RAM, ROM) - Data storage and retrieval systems - Counters and frequency dividers - Shift registers - Control and timing circuits

Alternative Models

Other flip-flop models that can be considered as alternatives to the 74F273SJ include: - 74LS273: A low-power variant with similar functionality. - 74HC273: A CMOS-based version offering compatibility with a wider voltage range. - 74ACT273: An advanced CMOS model with improved speed and lower power consumption.

In conclusion, the 74F273SJ is a versatile integrated circuit used for storing and manipulating binary data in digital electronic systems. Its high-speed operation, noise immunity, and compatibility make it a popular choice among designers working on various applications.

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