Encyclopedia Entry: 74ACT258SC

Product Overview

Category

The 74ACT258SC belongs to the category of integrated circuits (ICs) and specifically falls under the family of digital multiplexers.

Use

This IC is primarily used for data selection and routing purposes in various electronic applications.

Characteristics

• The 74ACT258SC is a quad 2-input multiplexer with three-state outputs.
• It operates on a supply voltage range of 4.5V to 5.5V.
• This IC offers high-speed operation and low power consumption.
• It is designed to be compatible with TTL (Transistor-Transistor Logic) inputs and outputs.
• The 74ACT258SC has a wide operating temperature range, making it suitable for diverse environments.

Package

The 74ACT258SC is available in a small outline integrated circuit (SOIC) package.

Essence

The essence of the 74ACT258SC lies in its ability to efficiently select and route data signals, enabling effective data management within electronic systems.

Packaging/Quantity

The 74ACT258SC is typically packaged in reels or tubes, with each reel containing a specific quantity of ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to Vcc
• Output Voltage Range: 0V to Vcc
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: <10ns
• Maximum Power Dissipation: 500mW

Detailed Pin Configuration

The 74ACT258SC features a 16-pin configuration. The pinout diagram is as follows:

+---\/---+ A1 --|1 16|-- Vcc A2 --|2 15|-- B1 B2 --|3 14|-- B2 C1 --|4 13|-- C2 C1 --|5 74ACT258SC 12|-- D1 D2 --|6 11|-- D2 GND --|7 10|-- G1 GND --|8 9|-- G2 +--------+

Functional Features

• Quad 2-input multiplexer: Allows selection between four different input signals.
• Three-state outputs: Provides the ability to disconnect the output from the circuit, allowing multiple devices to share a common bus.
• TTL compatibility: Ensures seamless integration with other TTL-based components.
• High-speed operation: Enables rapid data selection and routing.
• Low power consumption: Helps conserve energy in electronic systems.

Advantages and Disadvantages

Advantages

• Versatile data selection capabilities.
• Compatibility with TTL logic levels.
• Efficient three-state outputs for bus sharing.
• High-speed operation for time-critical applications.
• Low power consumption for energy-efficient designs.

Disadvantages

• Limited number of input signals (four inputs).
• Requires careful consideration of voltage levels to prevent damage.

Working Principles

The 74ACT258SC operates based on the principles of digital multiplexing. It selects one of the four input signals based on the control inputs and routes it to the output. The three-state outputs allow the device to be disconnected from the circuit when not in use, preventing interference with other components sharing the same bus.

Detailed Application Field Plans

The 74ACT258SC finds application in various fields, including but not limited to: - Data communication systems - Industrial automation - Consumer electronics - Automotive electronics - Medical equipment

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74ACT258SC include: - 74HC258: CMOS logic family-based quad 2-input multiplexer. - CD4051: Analog multiplexer/demultiplexer with single-ended or differential input/output options. - SN74LS157: TTL logic-based quad 2-line to 1-line data selectors/multiplexers.

These alternatives can be considered based on specific design requirements and compatibility with existing systems.

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