CD74HC257M

Product Overview

Category: Integrated Circuit
Use: Data Selector/Multiplexer
Characteristics: High-Speed CMOS Logic, Quad 2-Input Multiplexer
Package: SOIC (Small Outline Integrated Circuit)
Essence: CD74HC257M is a high-speed CMOS logic integrated circuit that functions as a quad 2-input multiplexer.
Packaging/Quantity: Available in reels of 2500 units

Specifications

Supply Voltage Range: 2V to 6V
Input Voltage Range: 0V to VCC
Output Voltage Range: 0V to VCC
Operating Temperature Range: -40°C to +85°C
Propagation Delay Time: 10 ns (typical)
Maximum Quiescent Current: 4 µA
Maximum Output Current: ±25 mA

Pin Configuration

The CD74HC257M has a total of 16 pins. The pin configuration is as follows:

A1 (Input A1)
B1 (Input B1)
Y1 (Output Y1)
GND (Ground)
A2 (Input A2)
B2 (Input B2)
Y2 (Output Y2)
E (Enable Input)
Y3 (Output Y3)
B3 (Input B3)
A3 (Input A3)
Y4 (Output Y4)
VCC (Supply Voltage)
B4 (Input B4)
A4 (Input A4)
GND (Ground)

Functional Features

CD74HC257M is a quad 2-input multiplexer that allows the selection of one out of four data inputs to be routed to a single output.
It operates at high speed and is compatible with CMOS logic levels.
The enable input (E) controls the operation of the multiplexer. When E is low, the outputs are in a high-impedance state.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Wide supply voltage range - Compact SOIC package for easy integration

Disadvantages: - Limited number of inputs and outputs - Lack of built-in protection features

Working Principles

The CD74HC257M works based on the principles of digital multiplexing. It uses a combination of logic gates to select one of the four data inputs and route it to the output based on the control signal provided by the enable input. The high-speed CMOS technology ensures efficient and reliable operation.

Detailed Application Field Plans

CD74HC257M finds applications in various fields, including:

Data communication systems
Digital audio/video equipment
Industrial automation
Automotive electronics
Consumer electronics

Alternative Models

Some alternative models that can be used as substitutes for CD74HC257M include:

SN74HC257N
MC74HC257AN
74HCT257

These models offer similar functionality and characteristics, providing flexibility in design choices.

In conclusion, CD74HC257M is a versatile quad 2-input multiplexer integrated circuit that offers high-speed operation and compatibility with CMOS logic levels. Its compact package and wide supply voltage range make it suitable for various applications in different industries.

Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von CD74HC257M in technischen Lösungen auf

Sure! Here are 10 common questions and answers related to the application of CD74HC257M in technical solutions:

Q: What is CD74HC257M? A: CD74HC257M is a quad 2-input multiplexer with 3-state outputs, commonly used in digital logic circuits.
Q: What is the purpose of CD74HC257M? A: CD74HC257M is used to select one of four data inputs and route it to a single output based on control signals.
Q: What voltage levels does CD74HC257M support? A: CD74HC257M supports a wide range of voltage levels, typically from 2V to 6V.
Q: How many control inputs does CD74HC257M have? A: CD74HC257M has two control inputs, which determine the selection of the data inputs.
Q: Can CD74HC257M handle high-speed data signals? A: Yes, CD74HC257M is designed to operate at high speeds, making it suitable for applications requiring fast data switching.
Q: What is the maximum current that CD74HC257M can source or sink? A: CD74HC257M can source or sink up to 6mA of current per output pin.
Q: Is CD74HC257M compatible with other logic families? A: Yes, CD74HC257M is compatible with a wide range of logic families, including TTL, CMOS, and LSTTL.
Q: Can CD74HC257M be used in both parallel and serial data applications? A: Yes, CD74HC257M can be used in both parallel and serial data applications, depending on the configuration and control signals.
Q: What is the power supply voltage range for CD74HC257M? A: The power supply voltage range for CD74HC257M is typically between 2V and 6V.
Q: Are there any specific precautions to consider when using CD74HC257M? A: It is important to ensure that the power supply voltage does not exceed the specified range, and to avoid exceeding the maximum current ratings of the device. Additionally, proper decoupling capacitors should be used to minimize noise and ensure stable operation.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's recommendations for CD74HC257M.