SN74LVC138APWRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: Low-Voltage CMOS Logic, 3-to-8 Line Decoder/Demultiplexer
• Package: TSSOP-16
• Essence: High-performance digital logic solution for decoding and demultiplexing applications
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 100MHz
• Number of Inputs: 3
• Number of Outputs: 8
• Propagation Delay: 2.7ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVC138APWRE4 has a total of 16 pins arranged as follows:

__ __ A2 |1 \__/ 16| VCC A1 |2 15| Y0 A0 |3 14| Y1 GND |4 13| Y2 E1 |5 12| Y3 E2 |6 L 11| Y4 Y7 |7 V 10| Y5 Y6 |8 C 9| Y6 --|____|--

Functional Features

• Decodes three binary inputs into eight mutually exclusive outputs
• Enables easy selection of one output line based on the input combination
• Provides a demultiplexing function by routing the selected input to the corresponding output
• Low-voltage CMOS technology ensures low power consumption and compatibility with various logic families
• High-speed operation allows for efficient data processing

Advantages and Disadvantages

Advantages: - Wide supply voltage range enables compatibility with different systems - Low propagation delay ensures fast response time - Compact TSSOP-16 package saves board space - High noise immunity due to CMOS technology

Disadvantages: - Limited number of inputs and outputs restricts the complexity of applications - Not suitable for high-frequency applications above 100MHz

Working Principles

The SN74LVC138APWRE4 is a decoder/demultiplexer IC that converts three binary inputs (A2, A1, A0) into eight mutually exclusive outputs (Y0-Y7). The enable pins (E1, E2) control the operation of the device. When both enable pins are active (low), the decoder function is enabled, and the selected input combination determines which output line is active. When either or both enable pins are inactive (high), all output lines are in a high-impedance state.

Detailed Application Field Plans

The SN74LVC138APWRE4 finds applications in various digital systems where decoding and demultiplexing functions are required. Some common application areas include:

1. Address Decoding: Used in microcontrollers and memory systems to decode address lines and select specific memory locations.
2. Data Routing: Enables selection of specific data paths in multiplexing applications, such as data buses and communication systems.
3. LED Display Control: Controls the activation of individual segments in LED displays, allowing for dynamic content presentation.
4. Signal Demultiplexing: Splits a single input signal into multiple outputs based on the input combination, useful in communication and signal processing systems.

Detailed and Complete Alternative Models

1. 74HC138: Similar 3-to-8 line decoder/demultiplexer IC with TTL logic levels.
2. CD74HCT138: High-speed CMOS version of the decoder/demultiplexer IC.
3. SN54LVC138A: Equivalent low-voltage CMOS decoder/demultiplexer IC in a different package (SOIC-16).

These alternative models offer similar functionality and can be used as replacements for the SN74LVC138APWRE4 based on specific requirements.

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