SN74LVC138AQPWREP

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: Low-Voltage CMOS, 3-to-8 Line Decoder/Demultiplexer
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: High-performance digital logic device 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: 100 MHz
• Number of Inputs: 3
• Number of Outputs: 8
• Propagation Delay Time: 4.2 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVC138AQPWREP 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. Y0 (Output Y0)
6. Y1 (Output Y1)
7. Y2 (Output Y2)
8. Y3 (Output Y3)
9. Y4 (Output Y4)
10. Y5 (Output Y5)
11. Y6 (Output Y6)
12. Y7 (Output Y7)
13. E1 (Enable Input 1)
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-voltage CMOS technology ensures low power consumption and compatibility with various voltage levels
• High-speed operation allows for efficient data processing
• Schmitt-trigger inputs provide hysteresis, enhancing noise immunity

Advantages and Disadvantages

Advantages: - Compact size and high integration - Wide supply voltage range allows for versatile applications - Fast propagation delay enables real-time decoding - Low power consumption enhances energy efficiency

Disadvantages: - Limited number of input lines (3) - Output current limitations may restrict certain applications requiring higher loads - Sensitivity to electrostatic discharge (ESD) requires proper handling precautions

Working Principles

The SN74LVC138AQPWREP is a decoder/demultiplexer IC that converts a binary input into a corresponding output. The three input lines (A0, A1, and A2) determine which output line (Y0-Y7) is activated. When the enable inputs (E1 and E2) are high, the decoder is enabled, and the selected output line reflects the binary input combination.

Detailed Application Field Plans

The SN74LVC138AQPWREP finds applications in various fields, including:

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

Detailed and Complete Alternative Models

1. 74HC138: Similar 3-to-8 line decoder/demultiplexer IC with TTL-compatible inputs
2. CD74HCT138: High-speed CMOS version with TTL-compatible inputs
3. SN54LS138: Low-power Schottky TTL version with open-collector outputs

These alternative models offer similar functionality and can be used as substitutes for the SN74LVC138AQPWREP in different applications.

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