SN74HC257PWT

Product Overview

Category

SN74HC257PWT belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital logic applications.

Characteristics

• High-speed operation
• Low power consumption
• Wide operating voltage range
• Compatibility with various logic families

Package

SN74HC257PWT is available in a TSSOP-16 package.

Essence

The essence of SN74HC257PWT lies in its ability to perform data multiplexing and demultiplexing functions.

Packaging/Quantity

This product is typically packaged in reels, with each reel containing a specific quantity of SN74HC257PWT ICs.

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HC
• Number of Inputs: 4
• Number of Outputs: 8
• Operating Temperature Range: -40°C to 85°C
• Propagation Delay Time: 9 ns (max)

Detailed Pin Configuration

1. A0: Data input 0
2. A1: Data input 1
3. A2: Data input 2
4. A3: Data input 3
5. G: Enable input
6. Y0: Multiplexer output 0
7. Y1: Multiplexer output 1
8. Y2: Multiplexer output 2
9. Y3: Multiplexer output 3
10. Y4: Multiplexer output 4
11. Y5: Multiplexer output 5
12. Y6: Multiplexer output 6
13. Y7: Multiplexer output 7
14. E: Output enable input
15. VCC: Positive supply voltage
16. GND: Ground

Functional Features

SN74HC257PWT is a quad 2-input multiplexer with output enable. It allows the selection of one of four data inputs and routes it to the corresponding output. The output enable input (E) controls the output state, enabling or disabling the outputs.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data processing.
• Low power consumption makes it suitable for portable devices.
• Wide operating voltage range provides flexibility in various applications.
• Compatibility with different logic families allows easy integration into existing systems.

Disadvantages

• Limited number of inputs and outputs may restrict its use in complex applications.
• Propagation delay time may affect real-time applications requiring immediate response.

Working Principles

SN74HC257PWT operates based on the principles of digital logic. The data inputs are selected using the address inputs (A0-A3), and the selected data is routed to the corresponding output. The output enable input (E) controls whether the outputs are active or in a high-impedance state.

Detailed Application Field Plans

SN74HC257PWT finds applications in various fields, including: 1. Data multiplexing/demultiplexing in communication systems 2. Address decoding in memory systems 3. Input/output expansion in microcontroller-based systems 4. Signal routing in test and measurement equipment

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to SN74HC257PWT are: 1. CD74HC257E 2. MC74HC257N 3. 74HCT257N 4. SN74LS257N

These models offer similar functionality and can be used as replacements depending on specific requirements.

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