SN74LS243N

Product Overview

Category

SN74LS243N belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for various applications such as data multiplexing and signal routing.

Characteristics

• Low-power Schottky TTL technology
• 4-line to 1-line data selector/multiplexer
• High-speed operation
• Wide operating voltage range: 4.75V to 5.25V
• Low power consumption

Package

SN74LS243N is available in a 16-pin DIP (Dual In-line Package) format.

Essence

The essence of SN74LS243N lies in its ability to select one out of four input lines and route it to a single output line based on the control inputs.

Packaging/Quantity

SN74LS243N is typically packaged in tubes or trays, with quantities varying depending on the supplier.

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• Input Voltage Range: 0V to Vcc
• Operating Temperature Range: -40°C to +85°C
• Output Current: ±8mA
• Propagation Delay Time: 15ns (max)
• Power Dissipation: 100mW (max)

Detailed Pin Configuration

__ __ A0 |1 16| Vcc A1 |2 15| B A2 |3 14| C A3 |4 13| D G1 |5 12| G2 GND|6 11| Y Y0 |7 10| Y1 Y2 |8 9| Y3 ‾‾ ‾‾

Functional Features

SN74LS243N is a 4-line to 1-line data selector/multiplexer. It allows the selection of one out of four input lines (A0-A3) and routes it to the output line (Y) based on the control inputs (B, C, D). The G1 and G2 pins are used for enabling or disabling the IC.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data routing.
• Low power consumption makes it suitable for battery-powered devices.
• Wide operating voltage range provides flexibility in various applications.

Disadvantages

• Limited to 4 input lines, which may not be sufficient for complex systems requiring more inputs.
• Propagation delay time may affect real-time applications.

Working Principles

SN74LS243N works by using the control inputs (B, C, D) to select one of the four input lines (A0-A3) and route it to the output line (Y). The G1 and G2 pins enable or disable the IC. When enabled, the selected input line is passed through to the output line.

Detailed Application Field Plans

SN74LS243N finds applications in various fields, including: 1. Data multiplexing in communication systems 2. Signal routing in digital audio equipment 3. Address decoding in microcontrollers 4. Input selection in electronic switches 5. Control signal routing in industrial automation

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to SN74LS243N are: 1. CD4051 - 8-channel analog multiplexer/demultiplexer 2. 74HC151 - 8-input multiplexer 3. SN74HC238 - 3-to-8 line decoder/demultiplexer 4. CD74HC4067 - 16-channel analog multiplexer/demultiplexer

These alternatives offer different features and capabilities, allowing users to choose the most suitable IC for their specific application.

In conclusion, SN74LS243N is a versatile 4-line to 1-line data selector/multiplexer IC. Its high-speed operation, low power consumption, and wide operating voltage range make it suitable for various digital electronics applications. However, its limited input lines and propagation delay time should be considered when selecting this IC for specific projects.