Encyclopedia Entry: 74ACT158MTCX

Product Overview

Category

The 74ACT158MTCX belongs to the category of integrated circuits (ICs), specifically a multiplexer.

Use

This IC is commonly used in digital electronics for data selection and routing purposes. It allows multiple input signals to be selectively routed to a single output line.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with TTL logic levels
• Four data inputs and two control inputs
• Single output line

Package and Quantity

The 74ACT158MTCX is available in a small outline surface mount package (TSSOP) and is typically sold in reels or tubes. The exact quantity per package may vary depending on the manufacturer.

Essence

The essence of the 74ACT158MTCX lies in its ability to efficiently handle data routing tasks in digital systems, providing flexibility and simplifying circuit design.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 5ns (typical)
• Maximum Quiescent Current: 4μA

Pin Configuration

The 74ACT158MTCX has a total of 16 pins, each serving a specific function:

1. Data Input A
2. Data Input B
3. Data Input C
4. Data Input D
5. Control Input G1
6. Control Input G2
7. Output Y
8. Ground (GND)
9. Ground (GND)
10. Data Input E
11. Data Input F
12. Data Input G
13. Data Input H
14. Control Input G3
15. Control Input G4
16. Supply Voltage (VCC)

Functional Features

• Data selection: The IC allows the user to choose one of the four data inputs (A, B, C, D) to be routed to the output line (Y) based on the control inputs (G1, G2).
• Enable control: The control inputs (G3, G4) provide additional enable/disable functionality, allowing the user to activate or deactivate the multiplexer as needed.
• Fast operation: With a propagation delay time of only 5ns, the 74ACT158MTCX ensures efficient and reliable data routing in high-speed digital systems.

Advantages and Disadvantages

Advantages

• High-speed operation enables real-time data processing.
• Low power consumption contributes to energy efficiency.
• Wide operating voltage range enhances compatibility with various systems.
• TTL logic level compatibility simplifies integration with existing circuits.

Disadvantages

• Limited number of data inputs may restrict the complexity of data routing tasks.
• Surface mount package may require specialized equipment for soldering and rework.

Working Principles

The 74ACT158MTCX operates based on the principles of digital multiplexing. It utilizes control inputs (G1, G2) to select one of the four data inputs (A, B, C, D) and routes the selected input to the output line (Y). The enable control inputs (G3, G4) allow the user to activate or deactivate the multiplexer as required.

Application Field Plans

The 74ACT158MTCX finds applications in various fields where data selection and routing are essential. Some potential application areas include:

1. Communication Systems: Multiplexers are used to switch between different communication channels, enabling efficient data transmission.
2. Data Acquisition: In data acquisition systems, multiplexers are employed to select and route analog signals from multiple sensors or sources for processing.
3. Digital Signal Processing: Multiplexers play a crucial role in digital signal processing applications, allowing the selection of specific data streams for further analysis or manipulation.
4. Industrial Automation: The IC can be utilized in industrial automation systems for selecting and routing control signals to different actuators or devices.

Alternative Models

For those seeking alternatives to the 74ACT158MTCX, several similar ICs are available on the market. Some notable alternatives include:

1. 74HC158: This IC offers similar functionality but operates at a lower voltage range (2V to 6V).
2. CD4051: A popular multiplexer IC with eight data inputs and three control inputs, providing increased flexibility.
3. SN74LS151: This multiplexer IC features a wider operating temperature range (-55°C to +125°C) suitable for harsh environments.

In conclusion, the 74ACT158MTCX is a versatile multiplexer IC that offers high-speed operation, low power consumption, and compatibility with TTL logic levels. Its compact package and flexible data routing