MC74VHC257MELG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer
• Characteristics: High-speed, low-power, 4-channel multiplexer
• Package: SOIC-16
• Essence: MC74VHC257MELG is a multiplexer IC that allows the selection of one out of four input signals to be routed to a single output line.
• Packaging/Quantity: The MC74VHC257MELG is typically sold in reels of 2500 units.

Specifications

• Supply Voltage: 2.0V to 5.5V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 3.5ns (typical)
• Input Capacitance: 3pF (typical)
• Output Capacitance: 6pF (typical)

Pin Configuration

The MC74VHC257MELG has a total of 16 pins arranged as follows:

__ __ A1 |1 \__/ 16| VCC B1 |2 15| Y C1 |3 14| S0 D1 |4 13| S1 G1 |5 12| S2 GND|6 11| S3 D2 |7 10| B2 C2 |8 9| A2 ‾‾ ‾‾

Functional Features

• 4-channel multiplexer with common select inputs (S0, S1, S2, S3)
• Allows selection of one input signal from four possible inputs (A1, B1, C1, D1)
• Output signal (Y) is determined by the selected input

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient signal routing
• Low-power consumption makes it suitable for battery-powered devices
• Compact SOIC-16 package saves board space
• Wide operating voltage range provides flexibility in various applications

Disadvantages

• Limited to 4 input channels, may not be suitable for applications requiring more inputs
• Propagation delay may introduce timing issues in certain high-speed applications

Working Principles

The MC74VHC257MELG operates as a multiplexer by utilizing the select inputs (S0, S1, S2, S3) to choose one of the four input signals (A1, B1, C1, D1) to be routed to the output (Y). The selected input is determined by the binary combination applied to the select inputs.

Detailed Application Field Plans

The MC74VHC257MELG can be used in various applications where multiple input signals need to be selectively routed to a single output. Some potential application fields include:

1. Data communication systems: The IC can be used to switch between different data sources or channels.
2. Audio/video equipment: It can be employed to select between different audio or video inputs.
3. Industrial control systems: The multiplexer can be utilized to route control signals from different sensors or devices.
4. Test and measurement instruments: It can be used to switch between different test signals or measurement inputs.

Detailed and Complete Alternative Models

1. CD74HC257E: Similar 4-channel multiplexer IC with comparable specifications, available in DIP-16 package.
2. SN74LS257N: Another 4-channel multiplexer IC with different characteristics, available in DIP-16 package.
3. MC74ACT257N: 4-channel multiplexer IC with faster propagation delay, available in DIP-16 package.

(Note: The above alternative models are provided for reference and may have different specifications or features. It is recommended to consult the respective datasheets for detailed information.)

This entry provides an overview of the MC74VHC257MELG, a 4-channel multiplexer IC. It includes basic information about the product, its specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.