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MC74ACT138NG
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MC74ACT138NG

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Decoder/Demultiplexer
  • Characteristics: High-speed, low-power consumption
  • Package: DIP (Dual In-line Package)
  • Essence: Converts binary information to a decoded output
  • Packaging/Quantity: Available in tubes of 25 units

Specifications

  • Logic Family: ACT
  • Number of Inputs: 3
  • Number of Outputs: 8
  • Supply Voltage: 2V - 6V
  • Operating Temperature Range: -55°C to +125°C

Detailed Pin Configuration

The MC74ACT138NG 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. E1 (Enable Input 1)
  6. Y0 (Output Y0)
  7. Y1 (Output Y1)
  8. Y2 (Output Y2)
  9. Y3 (Output Y3)
  10. Y4 (Output Y4)
  11. Y5 (Output Y5)
  12. Y6 (Output Y6)
  13. Y7 (Output Y7)
  14. E2 (Enable Input 2)
  15. VCC (Positive Power Supply)
  16. GND (Ground)

Functional Features

The MC74ACT138NG is a decoder/demultiplexer IC that takes three binary inputs (A0, A1, and A2) and converts them into eight mutually exclusive outputs (Y0-Y7). It operates at high speed and consumes low power, making it suitable for various digital applications.

The enable inputs (E1 and E2) control the operation of the decoder. When E1 is low, the outputs are disabled regardless of the input values. When E1 is high, the decoder functions according to the input values. Similarly, when E2 is low, all outputs are forced low.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Compact DIP package for easy integration - Wide operating temperature range

Disadvantages: - Limited number of inputs (3) - Limited number of outputs (8)

Working Principles

The MC74ACT138NG works based on the principle of binary decoding. The three input lines (A0, A1, and A2) represent a binary code, which is decoded to activate one of the eight output lines (Y0-Y7). The enable inputs (E1 and E2) control the functioning of the decoder, allowing for flexibility in output selection.

Detailed Application Field Plans

The MC74ACT138NG can be used in various applications, including but not limited to: - Address decoding in microprocessors and memory systems - Data routing and selection in digital circuits - Signal demultiplexing in communication systems - Control logic in industrial automation

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the MC74ACT138NG include: - 74LS138 - CD74HC138 - SN74LS138 - 74HCT138

These alternatives may have slight differences in specifications and pin configurations, so it is important to refer to their respective datasheets for detailed information.

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기술 솔루션에 MC74ACT138NG 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.

Sure! Here are 10 common questions and answers related to the application of MC74ACT138NG in technical solutions:

  1. Q: What is MC74ACT138NG? A: MC74ACT138NG is a 3-to-8 line decoder/demultiplexer integrated circuit (IC) that can be used in various digital logic applications.

  2. Q: What is the purpose of MC74ACT138NG? A: The purpose of MC74ACT138NG is to decode a binary input and activate one of the eight output lines based on the input value.

  3. Q: What is the voltage range supported by MC74ACT138NG? A: MC74ACT138NG supports a voltage range of 2V to 6V, making it compatible with both TTL and CMOS logic levels.

  4. Q: How many inputs does MC74ACT138NG have? A: MC74ACT138NG has three binary inputs (A0, A1, and A2) that determine which output line will be activated.

  5. Q: How many output lines does MC74ACT138NG have? A: MC74ACT138NG has eight output lines (Y0-Y7), each corresponding to a specific combination of the input values.

  6. Q: Can MC74ACT138NG be cascaded to increase the number of output lines? A: Yes, MC74ACT138NG can be cascaded with other decoders to increase the number of output lines and address more complex applications.

  7. Q: What is the maximum output current of MC74ACT138NG? A: The maximum output current of MC74ACT138NG is typically 24mA, allowing it to drive standard TTL or CMOS loads.

  8. Q: Is MC74ACT138NG suitable for high-speed applications? A: Yes, MC74ACT138NG is designed for high-speed operation and has a propagation delay of typically 5ns.

  9. Q: Can MC74ACT138NG be used in both active-high and active-low configurations? A: Yes, MC74ACT138NG can be used in both active-high and active-low configurations by appropriately connecting the enable (E) pin.

  10. Q: What are some common applications of MC74ACT138NG? A: MC74ACT138NG is commonly used in address decoding, memory selection, data routing, and general-purpose digital logic circuits.

Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.