Encyclopedia Entry: 74ACT399SC

Product Overview

Category

The 74ACT399SC belongs to the category of integrated circuits (ICs) and specifically falls under the family of digital multiplexers/demultiplexers.

Use

This product is primarily used in digital electronic systems for data routing and selection purposes. It allows multiple input signals to be selectively routed to a single output line or vice versa.

Characteristics

• The 74ACT399SC is a high-speed, 8-input multiplexer/demultiplexer.
• It operates on a wide voltage range, typically between 2V and 6V.
• This IC offers low power consumption and high noise immunity.
• It is designed to provide fast switching speeds and reliable performance.

Package

The 74ACT399SC is available in a standard 16-pin small outline integrated circuit (SOIC) package. This package ensures easy integration into various electronic systems.

Essence

The essence of the 74ACT399SC lies in its ability to efficiently handle data routing and selection tasks within digital circuits. It simplifies complex signal routing operations and enhances overall system performance.

Packaging/Quantity

The 74ACT399SC is commonly sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier and customer requirements.

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
• Maximum Propagation Delay: 5ns
• Maximum Input Capacitance: 10pF
• Maximum Quiescent Current: 4mA

Detailed Pin Configuration

The 74ACT399SC features a total of 16 pins, each serving a specific function. The pin configuration is as follows:

1. A0: Input A0
2. A1: Input A1
3. A2: Input A2
4. A3: Input A3
5. A4: Input A4
6. A5: Input A5
7. A6: Input A6
8. A7: Input A7
9. GND: Ground
10. Y: Output Y
11. S0: Select Input S0
12. S1: Select Input S1
13. E: Enable Input
14. VCC: Supply Voltage
15. B0: Input B0
16. B1: Input B1

Functional Features

The 74ACT399SC offers the following functional features:

• Multiplexing: It allows multiple input signals (A0-A7) to be selectively routed to the output line (Y) based on the select inputs (S0 and S1).
• Demultiplexing: It enables a single input signal (B0 or B1) to be routed to one of the eight output lines (Y0-Y7) based on the select inputs (S0 and S1).
• Enable Control: The enable input (E) can be used to activate or deactivate the multiplexer/demultiplexer functionality.

Advantages and Disadvantages

Advantages

• High-speed operation ensures efficient data routing.
• Wide voltage range compatibility enhances versatility.
• Low power consumption contributes to energy efficiency.
• Reliable performance with high noise immunity.
• Compact package facilitates easy integration into electronic systems.

Disadvantages

• Limited number of input/output lines compared to more advanced multiplexer/demultiplexer ICs.
• May not be suitable for applications requiring a higher level of complexity or larger data routing capabilities.

Working Principles

The 74ACT399SC operates based on the principles of digital multiplexing and demultiplexing. When used as a multiplexer, it selects one of the eight input lines (A0-A7) based on the select inputs (S0 and S1) and routes the selected signal to the output line (Y). Conversely, when used as a demultiplexer, it routes the input signal (B0 or B1) to one of the eight output lines (Y0-Y7) based on the select inputs (S0 and S1).

The enable input (E) controls the activation or deactivation of the multiplexer/demultiplexer functionality. When the enable input is high, the IC operates as intended, while a low enable input disables the device.

Detailed Application Field Plans

The 74ACT399SC finds applications in various digital electronic systems where data routing and selection are crucial. Some specific application fields include:

1. Data Communication Systems: Used for efficient data routing in communication networks, such as multiplexing/demultiplexing data streams.
2. Digital Signal Processing: Enables signal selection and routing in DSP systems, enhancing overall processing capabilities.