Encyclopedia Entry: 74ACT157MTR

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer
• Characteristics: High-speed, low-power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Logic gate multiplexer
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: ACT
• Number of Inputs: 4
• Number of Outputs: 1
• Supply Voltage: 2V to 6V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 5.5 ns (typical)
• Output Current: ±24 mA
• Input Capacitance: 3 pF (typical)

Detailed Pin Configuration

The 74ACT157MTR IC has a total of 16 pins arranged as follows:

__ __ A1 -| 1 16 |- VCC B1 -| 2 15 |- Y A2 -| 3 14 |- B2 B2 -| 4 13 |- A3 A3 -| 5 12 |- B3 B3 -| 6 11 |- A4 GND -| 7 10 |- B4 Y -| 8 9 |- G ----------

Functional Features

The 74ACT157MTR is a quad 2-input multiplexer that selects one of the four data inputs (A1-A4) based on the select inputs (B1-B4). It operates at high speed while consuming low power. The output (Y) provides the selected data input based on the select inputs. The IC is designed to work with a wide supply voltage range and can operate in a temperature range of -40°C to +85°C.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Wide supply voltage range - Compact SOIC package - Suitable for various applications

Disadvantages: - Limited number of inputs and outputs - Propagation delay may affect timing-sensitive applications

Working Principles

The 74ACT157MTR is based on logic gate multiplexing principles. It uses the select inputs (B1-B4) to determine which data input (A1-A4) is connected to the output (Y). The internal circuitry of the IC ensures that only one data input is selected at a time, providing the desired output based on the select inputs.

Detailed Application Field Plans

The 74ACT157MTR is commonly used in various digital systems and applications, including: - Data multiplexing in microprocessors and microcontrollers - Address decoding in memory systems - Signal routing in communication systems - Input selection in audio/video equipment - Control signal routing in industrial automation

Detailed and Complete Alternative Models

Some alternative models to the 74ACT157MTR that offer similar functionality include: - 74HC157: High-speed CMOS logic family - CD4051: Analog multiplexer/demultiplexer IC - SN54/74LS157: Low-power Schottky TTL logic family

These alternative models can be considered based on specific requirements and compatibility with the target system.

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