SN74F258D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Selector/Multiplexer
• Characteristics:
  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Logic gate with multiple inputs and outputs
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 5.5ns (typical)
• Input Capacitance: 3pF (typical)
• Output Capacitance: 8pF (typical)

Detailed Pin Configuration

The SN74F258D has a total of 16 pins arranged as follows:

1. A1 - Input A1
2. B1 - Input B1
3. C1 - Input C1
4. D1 - Input D1
5. GND - Ground
6. Y - Output Y
7. E - Enable Input
8. C2 - Input C2
9. D2 - Input D2
10. B2 - Input B2
11. A2 - Input A2
12. VCC - Power Supply
13. Y - Output Y
14. E - Enable Input
15. GND - Ground
16. NC - No Connection

Functional Features

• Data selection/multiplexing: The SN74F258D allows the selection of one of the four data inputs (A1, B1, C1, D1) based on the control inputs (E, C2, D2, B2, A2).
• Enable input: The enable input (E) controls the operation of the multiplexer. When E is high, the outputs are in a high-impedance state.
• Multiple outputs: The SN74F258D has two identical output pins (Y), providing flexibility in connecting to other components.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data selection. - Low power consumption helps conserve energy. - Wide operating voltage range enables compatibility with various systems.

Disadvantages: - Limited number of inputs and outputs compared to more advanced multiplexers. - Propagation delay time may affect real-time applications requiring immediate response.

Working Principles

The SN74F258D operates based on the principles of digital logic gates. It uses a combination of control inputs and data inputs to select the desired output. The enable input determines whether the outputs are active or in a high-impedance state.

Detailed Application Field Plans

The SN74F258D can be used in various applications, including but not limited to: - Data routing and selection in microcontrollers and microprocessors - Address decoding in memory systems - Input/output expansion in digital systems - Signal multiplexing in communication systems

Detailed and Complete Alternative Models

Some alternative models to the SN74F258D include: - 74HC258: Similar functionality, but operates at a lower voltage range (2V to 6V) - CD4051: Analog multiplexer/demultiplexer with higher channel count - SN74LS151: 8-input multiplexer with additional features like strobe input

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