SN74LVC138AQDRG4Q1

Product Overview

• Category: Integrated Circuit (IC)
• Use: Decoder/Demultiplexer
• Characteristics: Low-Voltage CMOS Logic, Automotive-Qualified
• Package: 16-pin SOIC (Small Outline Integrated Circuit)
• Essence: High-performance decoder/demultiplexer for automotive 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 Outputs: 8
• Propagation Delay Time: 3.7 ns (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The SN74LVC138AQDRG4Q1 has a total of 16 pins. The pin configuration is as follows:

1. GND (Ground)
2. A0 (Address Input 0)
3. A1 (Address Input 1)
4. A2 (Address Input 2)
5. /E1 (Enable Input 1, active low)
6. Y0 (Output 0)
7. Y1 (Output 1)
8. Y2 (Output 2)
9. Y3 (Output 3)
10. /E2 (Enable Input 2, active low)
11. Y4 (Output 4)
12. Y5 (Output 5)
13. Y6 (Output 6)
14. Y7 (Output 7)
15. VCC (Supply Voltage)
16. GND (Ground)

Functional Features

• Decodes 3-bit binary-coded inputs into 8 mutually exclusive outputs
• Low-voltage CMOS technology for reduced power consumption
• Automotive-qualified, suitable for use in automotive applications
• High-speed operation with a maximum frequency of 100 MHz
• Wide supply voltage range allows compatibility with various systems

Advantages and Disadvantages

Advantages: - Low power consumption due to CMOS technology - Automotive qualification ensures reliability in harsh environments - High-speed operation enables efficient data processing - Wide supply voltage range provides flexibility in system design

Disadvantages: - Limited number of outputs (8) - Propagation delay time may affect timing-sensitive applications

Working Principles

The SN74LVC138AQDRG4Q1 is a decoder/demultiplexer IC that takes a 3-bit binary-coded input and generates 8 mutually exclusive outputs. The inputs A0, A1, and A2 determine which output is active based on the binary value applied. The enable inputs (/E1 and /E2) control the overall operation of the device.

When the enable input (/E1) is low, the outputs Y0 to Y7 are enabled, and the selected output is determined by the binary input. When the enable input (/E2) is low, the outputs Y0 to Y7 are disabled regardless of the binary input.

Detailed Application Field Plans

The SN74LVC138AQDRG4Q1 is specifically designed for automotive applications where decoding and demultiplexing functions are required. It can be used in various automotive systems such as:

1. Infotainment Systems: Decoding audio/video signals for display and audio processing.
2. Lighting Control: Demultiplexing control signals for controlling different lighting elements in the vehicle.
3. Sensor Interface: Decoding sensor inputs for monitoring various parameters like temperature, pressure, etc.
4. Communication Systems: Demultiplexing data signals for communication between different modules in the vehicle.

Detailed and Complete Alternative Models

1. SN74LVC138A: Non-automotive version of the SN74LVC138AQDRG4Q1.
2. 74HC138: High-speed CMOS version with similar functionality.
3. CD74HC138: High-speed CMOS version from a different manufacturer.

These alternative models offer similar decoding/demultiplexing functionality but may have different characteristics, package options, or operating temperature ranges.

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