Diodes Incorporated
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74AHC138S16-13
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Encyclopedia Entry: 74AHC138S16-13

Product Overview

Category

The 74AHC138S16-13 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for decoding applications. It is specifically designed to decode a three-bit binary code into eight mutually exclusive outputs.

Characteristics

  • High-speed operation: The 74AHC138S16-13 operates at high speeds, making it suitable for time-critical applications.
  • Low power consumption: This IC has low power requirements, making it energy-efficient.
  • Wide supply voltage range: It can operate within a wide range of supply voltages, typically between 2V and 6V.
  • Output current capability: The IC has a high output current capability, allowing it to drive various loads.
  • Schmitt-trigger action on all inputs: This feature ensures reliable and noise-immune operation.

Package

The 74AHC138S16-13 is available in a standard 16-pin SOIC (Small Outline Integrated Circuit) package.

Essence

The essence of the 74AHC138S16-13 lies in its ability to efficiently decode binary codes into multiple outputs, enabling complex digital systems to function effectively.

Packaging/Quantity

The IC is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

  • Supply Voltage Range: 2V to 6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Maximum Propagation Delay: 15 ns
  • Maximum Quiescent Current: 4 μA

Detailed Pin Configuration

The 74AHC138S16-13 has a total of 16 pins, each serving a specific function. The pin configuration is as follows:

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

Functional Features

The 74AHC138S16-13 offers the following functional features:

  • Decoding Capability: It can decode a three-bit binary code into eight mutually exclusive outputs.
  • Enable Inputs: The IC has two enable inputs (E1 and E2) that control the operation of the decoder.
  • Output Enable: The outputs can be enabled or disabled using the enable inputs.
  • Schmitt-trigger Action: All inputs have Schmitt-trigger action, ensuring reliable and noise-immune operation.

Advantages and Disadvantages

Advantages

  • High-speed operation allows for time-critical applications.
  • Low power consumption makes it energy-efficient.
  • Wide supply voltage range provides flexibility in different systems.
  • Schmitt-trigger action ensures reliable operation in noisy environments.

Disadvantages

  • Limited to decoding three-bit binary codes.
  • May not be suitable for applications requiring more complex decoding.

Working Principles

The 74AHC138S16-13 operates based on the principle of combinational logic. It uses the three address inputs (A0, A1, and A2) to decode the binary code and activate one of the eight outputs (Y0 to Y7). The enable inputs (E1 and E2) control the operation of the decoder. When the enable inputs are active, the selected output is enabled, allowing the corresponding signal to pass through.

Detailed Application Field Plans

The 74AHC138S16-13 finds applications in various fields, including:

  1. Digital Communication Systems: It can be used for address decoding in communication protocols.
  2. Microcontroller-based Systems: The IC can assist in decoding memory addresses or selecting peripheral devices.
  3. Industrial Automation: It can be utilized in control systems for addressing different components or devices.
  4. Automotive Electronics: The IC can be employed in automotive systems for decoding signals and controlling various functions.

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the 74AHC138S16-13. Some notable alternatives include:

  1. 74LS138: This TTL (Transistor-Transistor Logic) version provides similar decoding capabilities.
  2. CD74HC138: This CMOS (

Énumérez 10 questions et réponses courantes liées à l'application de 74AHC138S16-13 dans les solutions techniques

Sure! Here are 10 common questions and answers related to the application of 74AHC138S16-13 in technical solutions:

  1. Q: What is the function of the 74AHC138S16-13? A: The 74AHC138S16-13 is a 3-to-8 line decoder/demultiplexer with active-low outputs.

  2. Q: What is the operating voltage range for the 74AHC138S16-13? A: The operating voltage range is typically between 2V and 5.5V.

  3. Q: How many input lines does the 74AHC138S16-13 have? A: The 74AHC138S16-13 has three input lines (A0, A1, and A2).

  4. Q: How many output lines does the 74AHC138S16-13 have? A: The 74AHC138S16-13 has eight output lines (Y0-Y7).

  5. Q: Can the 74AHC138S16-13 be used as a demultiplexer? A: Yes, the 74AHC138S16-13 can be used as a demultiplexer by connecting the appropriate input lines.

  6. Q: What is the maximum output current of the 74AHC138S16-13? A: The maximum output current is typically 8mA per output pin.

  7. Q: Can the 74AHC138S16-13 be cascaded to increase the number of output lines? A: Yes, multiple 74AHC138S16-13 chips can be cascaded to increase the number of output lines.

  8. Q: What is the propagation delay of the 74AHC138S16-13? A: The propagation delay is typically 6ns.

  9. Q: Can the 74AHC138S16-13 be used in both CMOS and TTL logic systems? A: Yes, the 74AHC138S16-13 is compatible with both CMOS and TTL logic levels.

  10. Q: What is the package type of the 74AHC138S16-13? A: The 74AHC138S16-13 is available in a 16-pin SOIC (Small Outline Integrated Circuit) package.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for the 74AHC138S16-13.