SN74AS157DRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer
• Characteristics: High-speed, low-power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: 2-input multiplexer with quad 1-of-2 data selectors
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: AS
• Number of Inputs: 2
• Number of Outputs: 4
• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to 85°C
• Propagation Delay Time: 9 ns (typical)
• Input Capacitance: 3 pF (typical)
• Output Current: ±24 mA
• Power Dissipation: 500 mW (max)

Detailed Pin Configuration

The SN74AS157DRE4 has a total of 16 pins, which are assigned as follows:

1. A Input 1
2. B Input 1
3. Y Output 1
4. G Input (Enable)
5. Y Output 2
6. B Input 2
7. A Input 2
8. VCC (Supply Voltage)
9. Y Output 3
10. GND (Ground)
11. Y Output 4
12. B Input 3
13. A Input 3
14. Y Output 5
15. G Input (Enable)
16. Y Output 6

Functional Features

The SN74AS157DRE4 is a quad 1-of-2 data selector/multiplexer. It allows the selection of one out of two input signals based on the control inputs. The device features high-speed operation and low power consumption, making it suitable for various applications.

Advantages and Disadvantages

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

Disadvantages: - Limited number of inputs and outputs - Not suitable for high-frequency applications

Working Principles

The SN74AS157DRE4 operates based on the principle of multiplexing. It selects one of the two input signals based on the control inputs (G). When G is low, the A inputs are selected, and when G is high, the B inputs are selected. The selected input is then routed to the corresponding output (Y).

Detailed Application Field Plans

The SN74AS157DRE4 can be used in various applications, including but not limited to: 1. Data routing and selection in digital systems 2. Address decoding in memory systems 3. Signal switching in communication systems 4. Multiplexing in data acquisition systems 5. Control signal selection in industrial automation

Detailed and Complete Alternative Models

1. SN74LS157: Low-power Schottky version with similar functionality
2. CD4052: CMOS analog multiplexer/demultiplexer
3. 74HC157: High-speed CMOS version with quad 2-input multiplexer

These alternative models offer similar functionality to the SN74AS157DRE4 and can be considered as replacements depending on specific requirements.

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