MC74VHCT257ADTR2

Overview

• Category: Integrated Circuit (IC)
• Use: Data Selector/Multiplexer
• Characteristics: High-speed, low-power, 3-state outputs
• Package: TSSOP-16
• Essence: A multiplexer that selects one of four data inputs and routes it to a single output
• Packaging/Quantity: Tape and Reel, 2500 units per reel

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: 6 ns (typical)
• Maximum Quiescent Current: 1 µA

Pin Configuration

The MC74VHCT257ADTR2 has a total of 16 pins arranged as follows:

__ __ Y1 |1 \__/ 16| VCC Y2 |2 15| B Y3 |3 14| C Y4 |4 13| D GND |5 12| OE A1 |6 11| C1 A2 |7 10| C2 A3 |8 9| C3 ‾‾ ‾‾

Functional Features

• 4-to-1 data selector/multiplexer with 3-state outputs
• Selects one of the four data inputs based on the control inputs (A1, A2, A3)
• The selected data is routed to the output (Y1, Y2, Y3, Y4)
• Output Enable (OE) pin allows the outputs to be disabled when not in use
• High-speed operation with minimal power consumption

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data selection - Low-power consumption helps conserve energy - 3-state outputs allow for easy interfacing with other devices

Disadvantages: - Limited to a 4-to-1 multiplexing functionality - Requires external control inputs for data selection

Working Principles

The MC74VHCT257ADTR2 is a digital multiplexer that selects one of four data inputs and routes it to a single output based on the control inputs. The A1, A2, and A3 pins are used to select the desired input, while the OE pin enables or disables the output. When the OE pin is high, the selected data input is passed through to the output. Conversely, when the OE pin is low, the outputs are disabled.

Detailed Application Field Plans

The MC74VHCT257ADTR2 can be used in various applications, including:

1. Data routing in microcontrollers and digital systems
2. Address decoding in memory systems
3. Input selection in audio/video equipment
4. Signal switching in communication systems
5. Multiplexing in industrial control systems

Detailed and Complete Alternative Models

1. SN74HC257: Similar 4-to-1 multiplexer IC with 3-state outputs, available in different package options.
2. CD4052: Dual 4-channel analog multiplexer/demultiplexer IC, suitable for both digital and analog signals.
3. 74HC151: 8-to-1 multiplexer IC with 3-state outputs, offering expanded data selection capabilities.

These alternative models provide similar functionality and can be considered as alternatives to the MC74VHCT257ADTR2 based on specific application requirements.

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