Encyclopedia Entry: 74LVX257MTR

Product Overview

Category

The 74LVX257MTR belongs to the category of integrated circuits (ICs) and specifically falls under the family of multiplexers/demultiplexers.

Use

This IC is commonly used in digital electronic systems for data routing and selection purposes. It acts as a quad 2-input multiplexer with 3-state outputs.

Characteristics

• Quad 2-input multiplexer
• 3-state outputs
• Low voltage operation (2.0V - 5.5V)
• High-speed performance
• Wide operating temperature range (-40°C to +125°C)

Package

The 74LVX257MTR is available in a small outline transistor (SOT) package, specifically the TSSOP-16 variant. This package offers compactness and ease of integration into circuit designs.

Essence

The essence of the 74LVX257MTR lies in its ability to efficiently route and select data signals within digital systems, enabling effective data management and control.

Packaging/Quantity

The 74LVX257MTR is typically supplied in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.0V - 5.5V
• Input Voltage Range: 0V - VCC
• Output Voltage Range: 0V - VCC
• Maximum Operating Frequency: 100MHz
• Propagation Delay Time: 6ns (max)
• Input Capacitance: 3pF (typ)
• Output Capacitance: 6pF (typ)

Detailed Pin Configuration

The 74LVX257MTR has a total of 16 pins, which are assigned specific functions:

1. A0: Input pin for data selection
2. A1: Input pin for data selection
3. Y0: Output pin for selected data
4. Y1: Output pin for selected data
5. G: Enable pin for 3-state outputs
6. Y2: Output pin for selected data
7. Y3: Output pin for selected data
8. VCC: Positive power supply
9. B0: Input pin for data selection
10. B1: Input pin for data selection
11. Y4: Output pin for selected data
12. Y5: Output pin for selected data
13. GND: Ground connection
14. Y6: Output pin for selected data
15. Y7: Output pin for selected data
16. OE: Output enable pin

Functional Features

The 74LVX257MTR offers the following functional features:

• Quad 2-input multiplexer with 3-state outputs
• Low voltage operation allows compatibility with a wide range of digital systems
• High-speed performance enables efficient data routing and selection
• 3-state outputs provide flexibility in controlling data flow

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows for versatile integration into various digital systems
• High-speed performance ensures efficient data processing
• Compact package size facilitates space-saving designs
• 3-state outputs offer flexibility in managing data flow

Disadvantages

• Limited number of input channels (2 inputs per multiplexer)
• May require additional components for complex data routing scenarios

Working Principles

The 74LVX257MTR operates based on the principles of multiplexing and demultiplexing. It selects one of the four input data signals based on the control inputs (A0, A1, B0, B1) and routes it to the corresponding output (Y0-Y7). The output enable (OE) pin controls the 3-state outputs, allowing them to be either active or in a high-impedance state.

Detailed Application Field Plans

The 74LVX257MTR finds applications in various digital systems, including but not limited to:

1. Data routing and selection in microcontrollers and microprocessors
2. Address decoding in memory systems
3. Signal multiplexing in communication systems
4. Input/output (I/O) expansion in embedded systems
5. Control signal routing in industrial automation

Detailed and Complete Alternative Models

1. 74HC257: Similar quad 2-input multiplexer with 3-state outputs, operates at higher voltage levels (2V - 6V).
2. CD4051: Analog multiplexer/demultiplexer IC, suitable for both digital and analog signal routing.
3. SN74LS151: 8-input multiplexer with 3-state outputs, offers increased input channel capacity.

These alternative models provide similar functionality to the 74LVX257MTR and can be considered as substitutes based on specific application requirements.

In conclusion, the 74LVX257MTR is a versatile integrated circuit that serves as a