SN74ALS158NSR

Product Overview

• Category: Integrated Circuit
• Use: Digital Multiplexer
• Characteristics: High-speed, TTL compatible, low power consumption
• Package: 16-pin SOIC (Small Outline Integrated Circuit)
• Essence: A multiplexer is a device that selects one of several input signals and forwards it to a single output line.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 9ns (typical)
• Output Current: ±24mA
• Input Capacitance: 3pF
• Output Capacitance: 15pF

Pin Configuration

The SN74ALS158NSR has a 16-pin configuration as follows:

1. A0 - Select Input A0
2. A1 - Select Input A1
3. A2 - Select Input A2
4. B - Data Input B
5. C - Data Input C
6. D - Data Input D
7. E - Data Input E
8. Y - Multiplexed Output Y
9. GND - Ground
10. NC - No Connection
11. NC - No Connection
12. NC - No Connection
13. NC - No Connection
14. VCC - Positive Power Supply
15. OE - Output Enable
16. NC - No Connection

Functional Features

• 3-bit binary inputs (A0, A1, A2) for selecting one of the eight data inputs (B, C, D, E)
• Output enable (OE) pin allows the user to control the output state
• High-speed operation with low propagation delay time
• TTL compatible inputs and outputs
• Low power consumption

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data selection - Low power consumption reduces energy usage - TTL compatibility ensures easy integration with existing systems

Disadvantages: - Limited number of input and output lines restricts the complexity of multiplexing operations - Propagation delay may introduce timing issues in certain applications

Working Principles

The SN74ALS158NSR is a digital multiplexer that operates by selecting one of the eight data inputs based on the binary inputs (A0, A1, A2). The selected data input is then forwarded to the output line (Y). The output enable (OE) pin controls the state of the output, allowing the user to enable or disable it as needed.

Detailed Application Field Plans

The SN74ALS158NSR finds applications in various fields, including:

1. Data communication systems: Used for data routing and switching in networking equipment.
2. Digital signal processing: Enables efficient data selection in DSP algorithms.
3. Industrial automation: Facilitates data multiplexing in control systems.
4. Test and measurement equipment: Allows for flexible signal routing during testing procedures.
5. Automotive electronics: Used in vehicle control units for data selection and routing.

Detailed and Complete Alternative Models

1. SN74ALS157NSR: Similar to SN74ALS158NSR but with 2-bit binary inputs instead of 3-bit.
2. SN74ALS151NSR: 8-input multiplexer with active-low enable pin.
3. SN74ALS138NSR: 3-to-8 decoder/demultiplexer with similar pin configuration.

These alternative models provide similar functionality to the SN74ALS158NSR and can be considered as alternatives depending on specific requirements.

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