MC74ACT138DG

Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: High-speed, low-power consumption
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Converts binary-coded input signals into corresponding output lines
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: ACT
• Number of Inputs: 3
• Number of Outputs: 8
• Supply Voltage Range: 2.0V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 5 ns (typical)
• Output Current: ±24 mA
• Power Dissipation: 500 mW (max)

Pin Configuration

The MC74ACT138DG has a total of 16 pins. The pin configuration is as follows:

1. GND (Ground)
2. A0 (Input A0)
3. A1 (Input A1)
4. A2 (Input A2)
5. E1 (Enable Input 1)
6. Y0 (Output Y0)
7. Y1 (Output Y1)
8. Y2 (Output Y2)
9. Y3 (Output Y3)
10. Y4 (Output Y4)
11. Y5 (Output Y5)
12. Y6 (Output Y6)
13. Y7 (Output Y7)
14. E2 (Enable Input 2)
15. VCC (Supply Voltage)
16. GND (Ground)

Functional Features

• Decodes three binary inputs into eight mutually exclusive outputs
• Enables easy selection of one output line based on the input combination
• Low power consumption due to ACT logic family
• High-speed operation allows for efficient data processing

Advantages

• Compact and space-saving package
• Wide supply voltage range allows for versatile applications
• High-speed operation enhances overall system performance
• Low power consumption reduces energy usage

Disadvantages

• Limited number of inputs and outputs
• Propagation delay time may affect real-time applications
• Requires external enable signals for proper functioning

Working Principles

The MC74ACT138DG is a decoder/demultiplexer IC that converts binary-coded input signals into corresponding output lines. It utilizes the ACT logic family, which ensures high-speed operation and low power consumption. The three binary inputs (A0, A1, and A2) determine the active output line based on their combination. The enable inputs (E1 and E2) control the activation of the decoder/demultiplexer. When enabled, the selected output line becomes active, while all other output lines remain inactive.

Detailed Application Field Plans

The MC74ACT138DG finds applications in various fields, including:

1. Digital Electronics: Used in digital systems to decode and demultiplex data signals.
2. Communication Systems: Enables efficient signal routing and selection in communication networks.
3. Industrial Automation: Facilitates control and monitoring of multiple devices through a single interface.
4. Automotive Electronics: Integrates with automotive systems for signal decoding and distribution.
5. Consumer Electronics: Utilized in devices such as TVs, DVD players, and set-top boxes for signal processing.

Alternative Models

1. 74HC138: Similar decoder/demultiplexer IC with CMOS logic family.
2. CD74AC138: Alternative IC with AC logic family, offering similar functionality.
3. SN74LS138: TTL logic family-based decoder/demultiplexer IC with different specifications.

Note: This entry provides a brief overview of the MC74ACT138DG. For more detailed information, please refer to the datasheet provided by the manufacturer.

Word Count: 431