Encyclopedia Entry: 74ACT273B

Product Overview

Category

The 74ACT273B belongs to the category of integrated circuits (ICs) and specifically falls under the family of flip-flops.

Use

This IC is commonly used in digital electronics for storing and manipulating binary data. It serves as a D-type flip-flop, which can store a single bit of information and transfer it to an output based on clock signals.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic families

Package

The 74ACT273B is typically available in a standard dual in-line package (DIP), which consists of 20 pins arranged in two rows.

Essence

The essence of the 74ACT273B lies in its ability to retain and control the state of a single bit of information, making it an essential component in various digital systems.

Packaging/Quantity

The IC is commonly sold in reels or tubes, with each reel containing approximately 2500 units.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Input Voltage High Level (VIH): 2.0V to VCC + 0.5V
• Input Voltage Low Level (VIL): -0.5V to 0.8V
• Output Voltage High Level (VOH): VCC - 0.5V
• Output Voltage Low Level (VOL): 0.4V

Detailed Pin Configuration

The 74ACT273B has a total of 20 pins, numbered as follows:

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

Functional Features

• Asynchronous clear input (CLR) for resetting the flip-flop to a known state
• Eight data inputs (D0-D7) for storing binary information
• Eight corresponding outputs (Q0-Q7) for transferring the stored data
• Clock input (CLK) for synchronizing the transfer of data

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data storage and retrieval
• Low power consumption makes it suitable for battery-powered devices
• Wide operating voltage range ensures compatibility with various systems
• Compatibility with TTL and CMOS logic families enables integration into different circuit designs

Disadvantages

• Limited storage capacity of only one bit per flip-flop
• Susceptible to noise interference due to its sensitivity to voltage fluctuations

Working Principles

The 74ACT273B operates based on the principles of sequential logic. When the clock input receives a rising edge, the data present at the D0-D7 inputs is transferred to the corresponding Q0-Q7 outputs. The state of the flip-flop can be cleared by applying a low signal to the CLR input.

Detailed Application Field Plans

The 74ACT273B finds applications in various digital systems, including but not limited to: - Microprocessors and microcontrollers - Memory units - Data storage devices - Communication systems - Control circuits

Detailed and Complete Alternative Models

Some alternative models that serve similar functions to the 74ACT273B include: - 74HC273: A CMOS-based octal D-type flip-flop with similar characteristics and pin configuration. - 74LS273: A TTL-based octal D-type flip-flop offering compatibility with older logic families.

These alternatives can be considered based on specific project requirements and compatibility needs.

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