Encyclopedia Entry: 74FCT543ATSOG8

Product Overview

Category

The 74FCT543ATSOG8 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 electronics for storing and transferring binary data. It serves as a latch or register, allowing the storage and retrieval of information in various applications.

Characteristics

• The 74FCT543ATSOG8 is a high-speed octal transparent latch with three-state outputs.
• It operates on a wide voltage range, typically between 4.5V and 5.5V.
• This IC offers low power consumption and high noise immunity, making it suitable for demanding digital systems.
• It features eight independent D-type latches with tri-state outputs, providing flexibility in data handling.

Package and Quantity

The 74FCT543ATSOG8 is available in a small-outline SOG-8 package. Each package contains one unit of the IC.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• High-Speed Operation: Typical propagation delay of 3.5 ns
• Output Drive Capability: ±24 mA
• Operating Temperature Range: -40°C to +85°C
• Input/Output Compatibility: TTL, CMOS

Pin Configuration

The pin configuration of the 74FCT543ATSOG8 is as follows:

+---+--+---+ OE --|1 +--+ 20|-- VCC GND --|2 19|-- Q0 D0 --|3 18|-- Q1 D1 --|4 17|-- Q2 D2 --|5 16|-- Q3 D3 --|6 15|-- Q4 D4 --|7 14|-- Q5 D5 --|8 13|-- Q6 D6 --|9 12|-- Q7 D7 --|10 11|-- LE +----------+

Functional Features

• The 74FCT543ATSOG8 offers transparent latch functionality, allowing data to pass through when the latch enable (LE) input is high.
• When the output enable (OE) input is low, the outputs are in a high-impedance state, enabling multiple devices to be connected together without interference.
• It provides reliable and efficient data storage and transfer capabilities, ensuring accurate information handling in digital systems.

Advantages and Disadvantages

Advantages

• High-speed operation enables quick data processing.
• Low power consumption contributes to energy efficiency.
• Wide voltage range compatibility allows for versatile applications.
• Tri-state outputs facilitate bus sharing and reduce signal conflicts.

Disadvantages

• Limited output drive capability may restrict use in certain high-current applications.
• The small-outline package may require additional precautions during assembly and handling.

Working Principles

The 74FCT543ATSOG8 operates based on the principles of flip-flops. It utilizes D-type latches to store and transfer binary data. The latch enable (LE) input controls the transparency of the latch, while the output enable (OE) input determines the output state. By manipulating these inputs, the IC can effectively store and retrieve data as required by the system.

Application Field Plans

The 74FCT543ATSOG8 finds extensive application in various digital systems, including but not limited to: 1. Microprocessors and microcontrollers 2. Data storage and retrieval systems 3. Communication equipment 4. Industrial automation 5. Automotive electronics

Alternative Models

For those seeking alternative options, the following ICs can be considered: 1. 74HC543: A similar octal transparent latch with tri-state outputs, compatible with CMOS logic levels. 2. 74LS573: An octal latch with non-inverting outputs, suitable for TTL logic systems. 3. SN74LVC543A: A low-voltage octal transparent latch with 3-state outputs, designed for operation at 1.65V to 5.5V.

These alternatives provide similar functionality and can be chosen based on specific system requirements.

In conclusion, the 74FCT543ATSOG8 is a high-speed octal transparent latch that offers efficient data storage and transfer capabilities. With its versatile applications and compatibility with various digital systems, it serves as a reliable component in modern electronics.

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