SN74LS145NSR

Product Overview

Category

SN74LS145NSR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used for data encoding and decoding purposes.

Characteristics

• Low-power Schottky technology
• 4-line to 16-line decoder/demultiplexer
• Active low outputs
• High fan-out capability
• Wide operating temperature range: -40°C to 85°C

Package

SN74LS145NSR is available in a small-outline package (SOIC) with 16 pins.

Essence

The essence of SN74LS145NSR lies in its ability to decode and demultiplex data signals, making it an essential component in various digital systems.

Packaging/Quantity

SN74LS145NSR is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

• Supply voltage: 4.75V to 5.25V
• Input voltage: 0V to VCC
• Output voltage: 0V to VCC
• Maximum input current: ±1mA
• Maximum output current: ±8mA
• Propagation delay time: 15ns (max)
• Power dissipation: 100mW (max)

Detailed Pin Configuration

1. A0 (Input)
2. A1 (Input)
3. A2 (Input)
4. A3 (Input)
5. GND (Ground)
6. /E1 (Enable Input)
7. /E2 (Enable Input)
8. Y0 (Output)
9. Y1 (Output)
10. Y2 (Output)
11. Y3 (Output)
12. Y4 (Output)
13. Y5 (Output)
14. Y6 (Output)
15. Y7 (Output)
16. VCC (Supply Voltage)

Functional Features

SN74LS145NSR is a 4-line to 16-line decoder/demultiplexer IC. It takes four input lines (A0-A3) and two enable inputs (/E1, /E2) to generate sixteen output lines (Y0-Y7). The active low outputs allow for easy interfacing with other digital components.

Advantages and Disadvantages

Advantages

• Low-power consumption
• High fan-out capability
• Wide operating temperature range
• Compact SOIC package

Disadvantages

• Limited number of input lines
• Active low outputs may require additional level shifting in certain applications

Working Principles

SN74LS145NSR works on the principle of data decoding and demultiplexing. The input lines (A0-A3) are used to select one of the sixteen output lines (Y0-Y7) based on the binary value applied to the inputs. The enable inputs (/E1, /E2) control the operation of the decoder/demultiplexer.

Detailed Application Field Plans

SN74LS145NSR finds applications in various digital systems, including: 1. Address decoding in microprocessors and microcontrollers 2. Memory selection in RAM and ROM modules 3. Data routing in multiplexers and demultiplexers 4. Signal decoding in communication systems 5. Control logic in industrial automation

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to SN74LS145NSR include: 1. 74HC154: 4-line to 16-line decoder/demultiplexer with CMOS technology 2. CD4514: 4-bit latch/4-to-16 line decoder with TTL technology 3. MC14514: 4-to-16 line decoder/demultiplexer with Schottky TTL technology

These alternative models offer similar functionality and can be used as replacements based on specific requirements.

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