CD74ACT257EG4

Product Overview

Category

CD74ACT257EG4 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital logic applications, specifically for data multiplexing and demultiplexing.

Characteristics

• CD74ACT257EG4 is a quad 2-input multiplexer with 3-state outputs.
• It operates on a supply voltage range of 4.5V to 5.5V.
• The device has a low power consumption and high-speed operation.
• It offers a wide operating temperature range of -40°C to 85°C.

Package

CD74ACT257EG4 is available in a standard 16-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of CD74ACT257EG4 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 product 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
• Logic Family: ACT
• Number of Inputs: 8 (4 data inputs, 2 control inputs)
• Number of Outputs: 1
• Output Type: 3-state

Detailed Pin Configuration

The CD74ACT257EG4 IC has the following pin configuration:

+---+--+---+ A0 |1 +--+ 16| VCC A1 |2 | Y B0 |3 | GND B1 |4 | C D0 |5 | B D1 |6 | A OE |7 | D LE |8 | Q GND |9 | D3 C |10 | D2 B |11 | D1 A |12 | D0 VCC |13 | B1 Y |14 | B0 +----------+

Functional Features

• CD74ACT257EG4 is a multiplexer with 3-state outputs, allowing multiple devices to share a common bus.
• It has two control inputs (LE and OE) that enable/disable the device and latch the selected data input.
• The quad 2-input design allows for versatile data routing options.

Advantages and Disadvantages

Advantages

• High-speed operation makes it suitable for time-critical applications.
• Low power consumption helps in reducing overall system energy requirements.
• Wide operating temperature range enables usage in various environments.
• 3-state outputs facilitate bus sharing and reduce signal interference.

Disadvantages

• Limited number of inputs and outputs may restrict complex data routing scenarios.
• Availability and pricing may vary depending on the supplier and market demand.

Working Principles

CD74ACT257EG4 operates based on the principles of digital logic. The control inputs (LE and OE) determine the state of the device. When LE is high, the selected data input is latched and routed to the output. When OE is low, the output is enabled, allowing the data to be transmitted. Otherwise, the output is in a high-impedance state.

Detailed Application Field Plans

CD74ACT257EG4 finds applications in various fields, including:

1. Data communication systems
2. Industrial automation
3. Automotive electronics
4. Consumer electronics
5. Medical equipment

In data communication systems, this IC can be used for multiplexing and demultiplexing data signals between different devices. In industrial automation, it enables efficient control signal routing. Automotive electronics benefit from its high-speed operation and reliability. Consumer electronics, such as audio/video devices, can utilize CD74ACT257EG4 for signal selection. Medical equipment often requires precise data routing, making this IC suitable for such applications.

Detailed and Complete Alternative Models

1. SN74ACT257: Similar quad 2-input multiplexer with 3-state outputs, offered by Texas Instruments.
2. MC74ACT257: Another alternative from ON Semiconductor, providing similar functionality.
3. 74HC257: A CMOS-based alternative from various manufacturers, compatible with a wider supply voltage range.

These alternative models offer similar features and can be considered as replacements for CD74ACT257EG4 based on specific requirements and availability.

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