Encyclopedia Entry: 74ACT258SCX

Product Overview

Category

The 74ACT258SCX belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for data multiplexing applications.

Characteristics

• The 74ACT258SCX 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 is designed to work at high speeds, making it suitable for use in various digital systems.
• It offers low power consumption and high noise immunity.

Package

The 74ACT258SCX is available in a small outline package (SOIC) with 16 pins.

Essence

The essence of the 74ACT258SCX lies in its ability to select one of four data inputs and route it to a single output line based on the control inputs.

Packaging/Quantity

This IC is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

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: 6 ns (max)
• Output Current: ±24 mA

Detailed Pin Configuration

The 74ACT258SCX has 16 pins arranged as follows:

+---+--+---+ A1 -|1 +--+ 16|- VCC B1 -|2 |- A0 C1 -|3 |- B0 D1 -|4 |- C0 G1 -|5 |- D0 OE1 -|6 |- GND Y1 -|7 |- A2 A3 -|8 |- B2 B3 -|9 |- C2 C3 -|10 |- D2 G2 -|11 |- OE2 OE3 -|12 |- Y2 Y3 -|13 |- A3 A4 -|14 |- B3 B4 -|15 |- C3 D4 -|16 |- Y4 +---+--+---+

Functional Features

The key functional features of the 74ACT258SCX include:

• Quad 2-input multiplexer: It can select one of four data inputs (A, B, C, or D) and route it to the output line (Y).
• Three-state outputs: The outputs can be disabled using the OE1 and OE2 control inputs.
• High-speed operation: The IC is designed to operate at high speeds, making it suitable for time-critical applications.
• Low power consumption: It offers efficient power usage, contributing to energy-saving designs.
• High noise immunity: The IC has built-in noise rejection capabilities, ensuring reliable operation in noisy environments.

Advantages and Disadvantages

Advantages

• Versatile multiplexing capability for data routing applications.
• High-speed operation enables efficient data processing.
• Low power consumption contributes to energy-efficient designs.
• Three-state outputs provide flexibility in controlling the output line.
• High noise immunity ensures reliable performance in noisy environments.

Disadvantages

• Limited to quad 2-input multiplexing functionality.
• Requires careful consideration of voltage levels to prevent damage.

Working Principles

The 74ACT258SCX operates based on the principles of digital multiplexing. It uses control inputs (OE1, OE2) to enable or disable the outputs and select one of the four data inputs (A, B, C, or D). The selected input is then routed to the output line (Y), allowing for efficient data routing in digital systems.

Detailed Application Field Plans

The 74ACT258SCX finds applications in various fields, including:

1. Data communication systems: Used for multiplexing data signals in communication protocols.
2. Digital signal processing: Enables efficient data routing in DSP algorithms.
3. Industrial automation: Facilitates data selection and routing in control systems.
4. Computer networking: Multiplexes data streams in network switches and routers.
5. Consumer electronics: Used in devices requiring data multiplexing, such as audio/video equipment.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74ACT258SCX include:

1. 74HC258: A quad 2-input multiplexer with non-inverting outputs.
2. CD4052: A dual 4-channel analog multiplexer/demultiplexer.
3. SN74LS