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SN74LVC138AZQNR
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SN74LVC138AZQNR

Product Overview

  • Category: Integrated Circuit
  • Use: Decoder/Demultiplexer
  • Characteristics:
    • Low-voltage CMOS technology
    • High-speed operation
    • Low power consumption
  • Package: 16-pin TSSOP (Thin Shrink Small Outline Package)
  • Essence: Decodes a three-bit binary input to eight mutually exclusive outputs
  • 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
  • Propagation Delay: 3.8 ns (typical)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVC138AZQNR has the following pin configuration:

  1. GND (Ground)
  2. A0 (Input)
  3. A1 (Input)
  4. A2 (Input)
  5. /G1 (Enable Input)
  6. Y0 (Output)
  7. Y1 (Output)
  8. Y2 (Output)
  9. Y3 (Output)
  10. Y4 (Output)
  11. Y5 (Output)
  12. Y6 (Output)
  13. Y7 (Output)
  14. VCC (Supply Voltage)
  15. /G2A (Enable Input)
  16. /G2B (Enable Input)

Functional Features

The SN74LVC138AZQNR is a 3-to-8 decoder/demultiplexer that converts a three-bit binary input into eight mutually exclusive outputs. It utilizes low-voltage CMOS technology, allowing for high-speed operation while consuming low power. The decoder has two enable inputs (/G1 and /G2A, /G2B) that can be used to control the operation of the device.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Wide supply voltage range - Compact package size

Disadvantages: - Limited number of input combinations (3-bit input)

Working Principles

The SN74LVC138AZQNR works by decoding the three-bit binary input (A0, A1, A2) and activating the corresponding output line (Y0 to Y7). The enable inputs (/G1 and /G2A, /G2B) control the overall operation of the decoder. When enabled, the selected output line goes low while all other outputs remain high.

Detailed Application Field Plans

The SN74LVC138AZQNR is commonly used in various applications, including but not limited to: - Address decoding in microcontrollers and microprocessors - Memory selection in digital systems - Data routing in communication systems - Signal demultiplexing in multimedia devices

Detailed and Complete Alternative Models

Some alternative models that provide similar functionality to the SN74LVC138AZQNR are: - 74HC138: High-speed CMOS logic decoder/demultiplexer - CD74HC238: High-speed CMOS logic decoder/demultiplexer - MC74VHC138: High-performance CMOS decoder/demultiplexer

These alternatives offer comparable features and can be used as replacements depending on specific requirements.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de SN74LVC138AZQNR en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of SN74LVC138AZQNR:

  1. Question: What is SN74LVC138AZQNR?
    - Answer: SN74LVC138AZQNR is a 3-to-8 line decoder/demultiplexer IC (integrated circuit) manufactured by Texas Instruments.

  2. Question: What is the purpose of SN74LVC138AZQNR?
    - Answer: The purpose of SN74LVC138AZQNR is to decode a 3-bit binary input and activate one of the eight output lines based on the input value.

  3. Question: What is the voltage range supported by SN74LVC138AZQNR?
    - Answer: SN74LVC138AZQNR supports a voltage range of 1.65V to 5.5V, making it compatible with a wide range of digital systems.

  4. Question: How many input pins does SN74LVC138AZQNR have?
    - Answer: SN74LVC138AZQNR has three input pins (A0, A1, and A2) for receiving the 3-bit binary input.

  5. Question: How many output pins does SN74LVC138AZQNR have?
    - Answer: SN74LVC138AZQNR has eight output pins (Y0 to Y7) corresponding to the eight possible combinations of the 3-bit input.

  6. Question: Can SN74LVC138AZQNR be used as a demultiplexer?
    - Answer: Yes, SN74LVC138AZQNR can be used as a demultiplexer by connecting the appropriate input pins and using the output pins to select different output devices.

  7. Question: What is the maximum output current supported by SN74LVC138AZQNR?
    - Answer: SN74LVC138AZQNR can source or sink up to 32mA of current per output pin, making it suitable for driving various loads.

  8. Question: Is SN74LVC138AZQNR compatible with TTL (Transistor-Transistor Logic) inputs?
    - Answer: Yes, SN74LVC138AZQNR is designed to be compatible with both CMOS (Complementary Metal-Oxide-Semiconductor) and TTL logic levels.

  9. Question: Can SN74LVC138AZQNR be cascaded to increase the number of outputs?
    - Answer: Yes, multiple SN74LVC138AZQNR ICs can be cascaded together to increase the number of outputs and decode larger binary numbers.

  10. Question: What are some common applications of SN74LVC138AZQNR?
    - Answer: SN74LVC138AZQNR is commonly used in digital systems for address decoding, memory selection, data routing, and general-purpose demultiplexing tasks.

Please note that these answers are general and may vary depending on specific use cases and requirements.