MC74ACT138DTR2G

Product Overview

Category: Integrated Circuit (IC)

Use: The MC74ACT138DTR2G is a decoder/demultiplexer IC that is commonly used in digital electronics circuits. It is designed to convert binary information from a single input line into multiple output lines, based on the specific combination of inputs.

Characteristics: - High-speed operation - Low power consumption - Wide operating voltage range - Schmitt trigger inputs for noise immunity - TTL-compatible inputs and outputs

Package: The MC74ACT138DTR2G is available in a small outline package (SOT-353), which is a surface-mount package with three leads.

Essence: This IC is an essential component in various digital systems where decoding or demultiplexing of signals is required. It enables efficient data routing and selection by converting the input signal into multiple output signals.

Packaging/Quantity: The MC74ACT138DTR2G is typically sold in reels, with 3000 units per reel.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 10 ns
• Maximum Quiescent Current: 8 mA

Detailed Pin Configuration

The MC74ACT138DTR2G has a total of 16 pins, which are assigned specific functions as follows:

1. GND: Ground reference
2. A0: Address input bit 0
3. A1: Address input bit 1
4. A2: Address input bit 2
5. E1: Enable input 1
6. E2: Enable input 2
7. E3: Enable input 3
8. Y0: Output 0
9. Y1: Output 1
10. Y2: Output 2
11. Y3: Output 3
12. Y4: Output 4
13. Y5: Output 5
14. Y6: Output 6
15. Y7: Output 7
16. VCC: Positive power supply

Functional Features

The MC74ACT138DTR2G offers the following functional features:

• Decoding and demultiplexing of binary information
• Three enable inputs for flexible control of output selection
• High-speed operation for efficient data routing
• Schmitt trigger inputs for improved noise immunity
• TTL-compatible inputs and outputs for easy integration with other digital circuits

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick data processing - Low power consumption helps in reducing overall system energy requirements - Wide operating voltage range provides flexibility in various applications - Schmitt trigger inputs ensure reliable operation in noisy environments - TTL compatibility simplifies integration with other digital components

Disadvantages: - Limited number of output lines (8) may not be sufficient for certain complex applications - Surface-mount package may require specialized equipment for soldering and handling

Working Principles

The MC74ACT138DTR2G works based on the principle of binary decoding. It takes a binary input signal and decodes it into multiple output signals, depending on the specific combination of input bits. The enable inputs further control the selection of output lines.

When the enable inputs are activated, the IC routes the input signal to the corresponding output line(s), allowing for efficient data distribution or demultiplexing.

Detailed Application Field Plans

The MC74ACT138DTR2G finds applications in various digital systems, including but not limited to:

1. Address decoding in microcontrollers and microprocessors
2. Memory selection and control in computer systems
3. Data routing and demultiplexing in communication systems
4. Signal distribution in audio/video equipment
5. Control logic in industrial automation

Detailed and Complete Alternative Models

1. 74HC138: Similar decoder/demultiplexer IC with TTL-compatible inputs and outputs.
2. CD74ACT138E: Another decoder/demultiplexer IC with similar characteristics and pin configuration.
3. SN74LS138N: A popular decoder/demultiplexer IC with Schottky-clamped TTL inputs.

These alternative models offer similar functionality and can be used as substitutes for the MC74ACT138DTR2G in various applications.

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