MC74LCX257DTR2

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: Low Voltage, Quad 2-Input Multiplexer
• Package: TSSOP-16
• Essence: The MC74LCX257DTR2 is a logic level translator IC that allows for the translation of signals between different voltage levels. It is specifically designed for low voltage applications.
• Packaging/Quantity: The MC74LCX257DTR2 is available in tape and reel packaging with 2500 units per reel.

Specifications

• Logic Family: LCX
• Number of Inputs: 2
• Number of Outputs: 1
• Voltage - Supply: 2 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Propagation Delay: 4.5 ns
• Output Type: Tri-State
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP (0.173", 4.40mm Width)

Detailed Pin Configuration

The MC74LCX257DTR2 has a total of 16 pins arranged as follows:

+---+--+---+ A1 -|1 +--+ 16|- VCC B1 -|2 |- Y1 A2 -|3 |- Y2 B2 -|4 |- GND E1 -|5 |- Y3 E2 -|6 |- Y4 Y4 -|7 |- E2 Y3 -|8 |- E1 GND-|9 |- B2 Y2 -|10 |- A2 Y1 -|11 |- B1 VCC -|12 |- A1 NC -|13 |- NC NC -|14 |- NC NC -|15 |- NC +---+--+---+

Functional Features

• The MC74LCX257DTR2 is a quad 2-input multiplexer that allows for the selection of one of four input signals to be routed to a single output.
• It operates at low voltage levels, making it suitable for use in battery-powered devices and other low-power applications.
• The tri-state outputs allow for easy connection to other devices without causing any interference.

Advantages and Disadvantages

Advantages

• Low voltage operation extends battery life in portable devices.
• Small package size saves board space.
• Tri-state outputs provide flexibility in signal routing.

Disadvantages

• Limited number of inputs and outputs may not meet the requirements of complex systems.
• Propagation delay of 4.5 ns may introduce timing issues in high-speed applications.

Working Principles

The MC74LCX257DTR2 works by using its control inputs (A1, A2, B1, B2) to select one of the four input signals (E1, E2) to be passed through to the corresponding output (Y1, Y2, Y3, Y4). The selected output is determined by the logic levels applied to the control inputs.

Detailed Application Field Plans

The MC74LCX257DTR2 can be used in various applications where voltage level translation is required. Some potential application fields include:

1. Battery-powered devices: The low voltage operation of the MC74LCX257DTR2 makes it suitable for use in portable electronics such as smartphones, tablets, and wearable devices.
2. Industrial automation: The IC can be used in control systems that require signal translation between different voltage levels.
3. Automotive electronics: The MC74LCX257DTR2 can be utilized in automotive applications where voltage level compatibility is necessary.

Detailed and Complete Alternative Models

1. SN74LVC257A: This logic level translator IC offers similar functionality to the MC74LCX257DTR2 and is available in various package options.
2. 74HC257: This high-speed CMOS logic level translator provides faster propagation delay but operates at a higher voltage range.

(Note: The above alternative models are provided for reference purposes only. It is recommended to consult the manufacturer's datasheets for detailed specifications and suitability for specific applications.)

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