SN74LS155ADR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer/Demultiplexer
• Characteristics: TTL Logic, Dual 2-Line to 4-Line Decoder/Demultiplexer
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: High-speed digital logic circuit for data routing and selection
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.75V to 5.25V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 15ns (typical)
• Maximum Operating Frequency: 33MHz

Detailed Pin Configuration

The SN74LS155ADR has a total of 16 pins, which are assigned as follows:

1. A0: Address Input 0
2. A1: Address Input 1
3. E: Enable Input
4. D0: Data Input 0
5. D1: Data Input 1
6. GND: Ground
7. Y0: Output 0
8. Y1: Output 1
9. Y2: Output 2
10. Y3: Output 3
11. VCC: Positive Power Supply
12. D2: Data Input 2
13. D3: Data Input 3
14. A2: Address Input 2
15. A3: Address Input 3
16. NC: No Connection

Functional Features

The SN74LS155ADR is a dual 2-line to 4-line decoder/demultiplexer IC. It allows the selection of one out of four possible outputs based on the binary input address. The enable input (E) controls the operation of the IC. When E is high, the outputs are enabled, and when E is low, the outputs are disabled.

Advantages and Disadvantages

Advantages: - High-speed operation - TTL logic compatibility - Wide operating temperature range - Compact SOIC package for space-saving applications

Disadvantages: - Limited number of output lines (4) - Requires external components for complete functionality

Working Principles

The SN74LS155ADR works based on the principle of digital logic decoding. It uses internal circuitry to decode the binary input address and select the corresponding output line. The enable input allows the user to control the activation of the outputs. The IC operates on TTL logic levels, ensuring compatibility with other TTL-based systems.

Detailed Application Field Plans

The SN74LS155ADR finds applications in various fields where data routing and selection are required. Some of the detailed application field plans include:

1. Data Multiplexing: The IC can be used to multiplex multiple data sources onto a single transmission line.
2. Address Decoding: It can be employed to decode binary addresses and enable specific memory or peripheral devices.
3. Data Demultiplexing: The IC can be utilized to demultiplex a single data stream into multiple output lines.
4. Control Signal Routing: It can be used to route control signals to different sections of a digital system based on the address inputs.

Detailed and Complete Alternative Models

1. 74HC155: Similar dual 2-line to 4-line decoder/demultiplexer IC with CMOS logic compatibility.
2. CD74HCT155: Dual 2-line to 4-line decoder/demultiplexer IC with improved noise immunity.
3. SN74LS154: 4-line to 16-line decoder/demultiplexer IC with additional address inputs and output lines.

These alternative models provide similar functionality to the SN74LS155ADR and can be used as substitutes based on specific requirements.

Word count: 409 words