SN74AS158DR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Multiplexer
• Characteristics: High-speed, Low-power, TTL-compatible
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: 4-to-1 Data Selector/Multiplexer
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 4.5V to 5.5V
• Input Voltage: 0V to VCC
• Output Voltage: 0V to VCC
• Operating Temperature: -40°C to +85°C
• Propagation Delay: 9ns (typical)
• Input Capacitance: 3pF (typical)
• Output Current: ±8mA

Detailed Pin Configuration

The SN74AS158DR has a total of 16 pins, which are assigned as follows:

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

Functional Features

The SN74AS158DR is a 4-to-1 data selector/multiplexer IC. It allows the selection of one out of four input data lines based on the select inputs (A, B, C, D). The output enable input (OE) controls the output state. When OE is low, the selected input is passed to the output (Y). The IC operates at high speed and low power, making it suitable for various digital applications.

Advantages and Disadvantages

Advantages: - High-speed operation - Low-power consumption - TTL-compatible inputs - Wide operating temperature range - Compact SOIC package

Disadvantages: - Limited number of input lines (4-to-1) - Not suitable for analog applications

Working Principles

The SN74AS158DR works based on the principle of data selection and multiplexing. The select inputs determine which input data line is connected to the output. When the output enable input is active, the selected input is passed through to the output. The IC operates using TTL logic levels and requires a stable power supply within the specified voltage range.

Detailed Application Field Plans

The SN74AS158DR can be used in various digital systems and applications, including: - Data routing and selection in microcontrollers - Address decoding in memory systems - Input selection in multiplexed data acquisition systems - Control signal routing in communication systems - Logic circuit design and implementation

Detailed and Complete Alternative Models

• SN74AS157DR: 4-to-1 Data Selector/Multiplexer with inverted outputs
• SN74AS151DR: 8-to-1 Data Selector/Multiplexer
• SN74AS138DR: 3-to-8 Decoder/Demultiplexer with active-low outputs
• SN74AS541DW: Octal Buffer/Line Driver with 3-state outputs

These alternative models offer similar functionality and can be considered as alternatives to the SN74AS158DR based on specific application requirements.

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