MC74LVX138DTR2

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: Low-voltage, high-speed, 3-to-8 line decoder/demultiplexer
• Package: TSSOP-16
• Essence: MC74LVX138DTR2 is a decoder/demultiplexer IC that converts a binary input into a corresponding output. It is designed to operate at low voltage levels and provides high-speed decoding capabilities.
• Packaging/Quantity: The MC74LVX138DTR2 is typically sold in reels of 2500 units.

Specifications

• Supply Voltage: 2.0V to 5.5V
• Input Voltage: -0.5V to VCC + 0.5V
• Output Voltage: -0.5V to VCC + 0.5V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 6 ns (typical)
• Output Current: ±24 mA
• Number of Inputs: 3
• Number of Outputs: 8

Pin Configuration

The MC74LVX138DTR2 has a total of 16 pins arranged as follows:

┌───┐ Y0 ─┤1 16├─ VCC Y1 ─┤2 15├─ A2 Y2 ─┤3 14├─ A1 Y3 ─┤4 13├─ A0 GND ─┤5 12├─ E A3 ─┤6 11├─ Y7 Y4 ─┤7 10├─ Y6 Y5 ─┤8 9├─ Y7 └───┘

Functional Features

• Converts a 3-bit binary input to one of the eight corresponding outputs.
• High-speed operation allows for quick decoding.
• Low-voltage design enables compatibility with various systems.
• Can be used as a decoder or demultiplexer depending on the application requirements.

Advantages and Disadvantages

Advantages

• Fast propagation delay ensures efficient decoding.
• Wide operating voltage range allows for flexibility in different applications.
• Compact TSSOP-16 package saves board space.
• High output current capability supports driving external loads.

Disadvantages

• Limited number of inputs and outputs restricts the complexity of the decoding process.
• Not suitable for applications requiring higher bit decoding.

Working Principles

The MC74LVX138DTR2 operates based on the principle of binary decoding. The three input pins (A0, A1, A2) accept a 3-bit binary code, which is then decoded into one of the eight output pins (Y0-Y7). The enable pin (E) controls the operation of the decoder/demultiplexer. When E is low, the outputs are disabled, and when E is high, the decoding process takes place.

Detailed Application Field Plans

The MC74LVX138DTR2 can be used in various applications, including:

1. Address decoding in microcontrollers and memory systems.
2. Data routing and selection in multiplexing applications.
3. Control signal generation in digital circuits.
4. Interface circuitry for communication protocols.
5. Logic circuit design requiring binary decoding functionality.

Alternative Models

Here are some alternative models that provide similar functionality:

1. SN74LS138N
2. CD74HC138E
3. 74HCT138

These alternatives can be considered based on specific application requirements, availability, and cost considerations.

In conclusion, the MC74LVX138DTR2 is a low-voltage, high-speed decoder/demultiplexer IC that offers efficient binary decoding capabilities. Its compact package, wide operating voltage range, and fast propagation delay make it suitable for various applications in digital circuit design.

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