CD74HC257MT

Product Overview

• Category: Integrated Circuit
• Use: Data Selector/Multiplexer
• Characteristics: High-Speed, CMOS Logic, Quad 2-Input Multiplexer
• Package: TSSOP-16
• Essence: CD74HC257MT is a high-speed CMOS logic integrated circuit that functions as a quad 2-input multiplexer. It allows the selection of one out of four data inputs to be routed to a single output.
• Packaging/Quantity: The CD74HC257MT is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HC
• Number of Inputs: 4
• Number of Outputs: 1
• Propagation Delay: 9 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HC257MT has a total of 16 pins arranged as follows:

+---+--+---+ A1 -|1 +--+ 16|- VCC B1 -|2 |- Y A2 -|3 |- B B2 -|4 |- C A3 -|5 |- D B3 -|6 |- GND A4 -|7 |- E B4 -|8 |- F OE1 -|9 |- OE2 OE3 -|10 |- OE4 SEL -|11 |- SELB GND -|12 |- A Y -|13 |- B C -|14 |- C D -|15 |- D +----------+

Functional Features

• CD74HC257MT 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 utilizes CMOS logic technology.
• The chip has built-in protection against electrostatic discharge (ESD) and latch-up.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data selection and routing.
• CMOS logic technology provides low power consumption.
• Built-in ESD and latch-up protection enhance reliability.

Disadvantages

• Limited number of inputs and outputs restricts its application in complex systems requiring more extensive data routing capabilities.
• Requires careful handling to avoid damage from static electricity.

Working Principles

The CD74HC257MT functions as a multiplexer by utilizing a combination of logic gates to select and route data. The inputs A, B, C, and D represent the four data inputs, while the SEL and SELB pins control the selection process. The OE1, OE2, OE3, and OE4 pins enable or disable the output. When properly configured, the selected input is routed to the output pin Y.

Detailed Application Field Plans

The CD74HC257MT can be used in various applications where data selection and routing are required. Some potential application fields include:

1. Digital communication systems
2. Data processing units
3. Industrial automation
4. Consumer electronics
5. Automotive electronics

Detailed and Complete Alternative Models

1. SN74HC257N: Similar quad 2-input multiplexer with DIP-16 package.
2. CD4052BE: Dual 4-channel analog multiplexer/demultiplexer with DIP-16 package.
3. MC14051BCP: 8-channel analog multiplexer/demultiplexer with DIP-16 package.

These alternative models offer similar functionality and can be used as substitutes for the CD74HC257MT in various applications.

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