74AHCT257PW,118

Basic Information Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer/Demultiplexer
• Characteristics: High-speed CMOS logic, low power consumption
• Package: TSSOP-16
• Essence: A multiplexer/demultiplexer IC that allows the selection of one input from multiple inputs or the distribution of a single input to multiple outputs.
• Packaging/Quantity: Available in tape and reel packaging, with 2500 units per reel.

Specifications

• Logic Family: AHCT
• Number of Inputs: 4
• Number of Outputs: 1
• 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 +125°C

Detailed Pin Configuration

The 74AHCT257PW,118 IC has a total of 16 pins arranged as follows:

+---+--+---+ Y1 |1 +--+ 16| VCC Y2 |2 | A Y3 |3 | B Y4 |4 | C GND |5 | D S |6 | Y OE |7 | GND A |8 | Y4 B |9 | Y3 C |10 | Y2 D |11 | Y1 GND |12 | NC NC |13 | NC NC |14 | NC NC |15 | NC +----------+

Functional Features

• The 74AHCT257PW,118 is a quad 2-input multiplexer with common select inputs (S) and an output enable input (OE).
• It can be used as a 4:1 multiplexer or a 1:4 demultiplexer.
• The select inputs (A, B, C, D) determine which input is connected to the output (Y).
• The output enable input (OE) allows the device to be disabled, effectively disconnecting the output from the selected input.

Advantages and Disadvantages

Advantages: - High-speed operation due to CMOS technology. - Low power consumption. - Wide supply voltage range. - Versatile functionality as both a multiplexer and demultiplexer.

Disadvantages: - Limited number of inputs and outputs. - Requires external control signals for proper operation.

Working Principles

The 74AHCT257PW,118 operates based on the principles of digital logic. The select inputs (A, B, C, D) determine the binary code that selects one of the four inputs to be connected to the output. The output enable input (OE) controls whether the output is active or disabled. By manipulating these control signals, the IC can function as either a multiplexer or a demultiplexer.

Detailed Application Field Plans

The 74AHCT257PW,118 finds applications in various fields, including: 1. Data communication systems 2. Digital audio/video equipment 3. Industrial automation 4. Automotive electronics 5. Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to the 74AHCT257PW,118 IC are: - 74HC257: Similar functionality but operates at a higher voltage range. - CD4051: Analog multiplexer/demultiplexer with more channels. - SN74LS151: 8-input multiplexer with additional features.

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