Encyclopedia Entry: 74ACT11257NG4

Product Information Overview

Category: Integrated Circuit (IC)

Use: The 74ACT11257NG4 is a quad 2-input multiplexer with 3-state outputs. It is commonly used in digital electronic systems for data routing and selection purposes.

Characteristics: - High-speed operation - Low power consumption - Wide operating voltage range - 3-state outputs for bus-oriented applications

Package: The 74ACT11257NG4 is available in a 24-pin DIP (Dual In-line Package) format, which allows for easy integration into circuit boards.

Essence: This IC serves as a versatile multiplexer, enabling efficient data routing and selection within digital systems.

Packaging/Quantity: The 74ACT11257NG4 is typically sold in reels or tubes, containing multiple units per package. 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: 6ns (max)
Output Current: ±24mA

Detailed Pin Configuration

The 74ACT11257NG4 features a 24-pin configuration. Here is a detailed pinout description:

A0: Input A0
B0: Input B0
Y0: Output Y0
G1: Enable Input G1
A1: Input A1
B1: Input B1
Y1: Output Y1
G2: Enable Input G2
Y2: Output Y2
A2: Input A2
B2: Input B2
G3: Enable Input G3
Y3: Output Y3
VCC: Positive Power Supply
GND: Ground
Y4: Output Y4
A3: Input A3
B3: Input B3
G4: Enable Input G4
Y5: Output Y5
A4: Input A4
B4: Input B4
Y6: Output Y6
Y7: Output Y7

Functional Features

The 74ACT11257NG4 offers the following functional features:

Quad 2-input multiplexer with 3-state outputs
Allows selection of one out of four data inputs (A0-A3, B0-B4) through the enable inputs (G1-G4)
Outputs (Y0-Y7) can be put in a high-impedance state using the enable inputs
High-speed operation enables efficient data routing and selection within digital systems
Low power consumption makes it suitable for battery-powered devices
Wide operating voltage range ensures compatibility with various power supply configurations

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data processing - Low power consumption extends battery life in portable devices - Versatile 3-state outputs facilitate bus-oriented applications - Wide operating voltage range enhances compatibility

Disadvantages: - Limited number of input/output channels compared to larger multiplexers - Propagation delay may impact real-time applications with strict timing requirements

Working Principles

The 74ACT11257NG4 operates based on the principles of digital logic. It utilizes multiplexing techniques to select and route data from multiple inputs to specific outputs. The enable inputs (G1-G4) control the selection of data inputs (A0-A3, B0-B4), and the outputs (Y0-Y7) provide the selected data.

When an enable input is active (low), the corresponding data inputs are connected to the outputs. When an enable input is inactive (high), the outputs enter a high-impedance state, effectively disconnecting them from the data inputs.

Detailed Application Field Plans

The 74ACT11257NG4 finds applications in various digital electronic systems, including but not limited to:

Data routing and selection in microcontrollers and microprocessors
Address decoding in memory systems
Bus switching in communication interfaces
Input/output expansion in embedded systems
Multiplexing in data acquisition systems

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the 74ACT11257NG4:

SN74ALS257N
CD4052BE
MC14551BCP
74HC157N
CD74HCT157E

These

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací 74ACT11257NG4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of 74ACT11257NG4 in technical solutions:

Q: What is the 74ACT11257NG4? A: The 74ACT11257NG4 is a quad 2-input multiplexer with 3-state outputs, commonly used in digital logic circuits.
Q: What is the purpose of a multiplexer? A: A multiplexer is used to select one of several input signals and route it to a single output line.
Q: How many inputs does the 74ACT11257NG4 have? A: The 74ACT11257NG4 has four independent 2-input multiplexers, allowing for a total of eight input signals.
Q: Can the 74ACT11257NG4 handle both analog and digital signals? A: No, the 74ACT11257NG4 is designed specifically for digital signals and is not suitable for handling analog signals.
Q: What is the voltage range supported by the 74ACT11257NG4? A: The 74ACT11257NG4 operates with a voltage range of 2V to 6V.
Q: How does the 74ACT11257NG4 handle multiple input signals? A: The 74ACT11257NG4 uses control inputs to select which input signal is routed to the output.
Q: Can the 74ACT11257NG4 drive high-current loads? A: Yes, the 74ACT11257NG4 has 3-state outputs that can drive high-current loads.
Q: What is the propagation delay of the 74ACT11257NG4? A: The propagation delay of the 74ACT11257NG4 is typically around 5ns.
Q: Can the 74ACT11257NG4 be cascaded to increase the number of inputs? A: Yes, multiple 74ACT11257NG4 chips can be cascaded together to increase the number of input signals.
Q: What are some common applications of the 74ACT11257NG4? A: The 74ACT11257NG4 is commonly used in data multiplexing, bus switching, and signal routing applications in digital systems.

Please note that these answers are general and may vary depending on specific application requirements.