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MC74HC139ADTR2
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MC74HC139ADTR2

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Decoder/Demultiplexer
  • Characteristics: High-Speed CMOS Logic, Dual 2-to-4 Line Decoder/Demultiplexer
  • Package: TSSOP-16
  • Essence: MC74HC139ADTR2 is a decoder/demultiplexer IC that converts binary information from input lines into separate output lines.
  • Packaging/Quantity: The MC74HC139ADTR2 is typically sold in reels of 2500 units.

Specifications

  • Supply Voltage: 2V to 6V
  • Input Voltage: -0.5V to VCC + 0.5V
  • Output Voltage: -0.5V to VCC + 0.5V
  • Operating Temperature Range: -55°C to +125°C
  • Propagation Delay: 13 ns (typical)
  • Output Current: ±25mA
  • Logic Family: HC

Pin Configuration

The MC74HC139ADTR2 has a TSSOP-16 package with the following pin configuration:

__ __ A1 | 1 16 | VCC A0 | 2 15 | Y0 /E1 | 3 14 | Y1 /E2 | 4 13 | Y2 Y3 | 5 12 | GND Y4 | 6 11 | /E3 Y5 | 7 10 | A2 Y6 | 8 9 | A3 ‾‾ ‾‾

Functional Features

  • Dual 2-to-4 Line Decoder/Demultiplexer
  • High-Speed CMOS Logic for fast operation
  • Converts binary information from input lines into separate output lines
  • Enable inputs (/E1, /E2, /E3) control the operation of the decoder/demultiplexer

Advantages and Disadvantages

Advantages

  • High-speed operation allows for quick decoding/demultiplexing of input signals
  • Wide operating voltage range (2V to 6V) provides flexibility in various applications
  • Compact TSSOP-16 package saves board space

Disadvantages

  • Limited number of output lines (Y0 to Y6)
  • Requires external logic to handle additional input/output lines if needed

Working Principles

The MC74HC139ADTR2 operates based on the principles of digital logic. It takes binary information from the input lines (A0, A1, A2, A3) and decodes it to activate one of the output lines (Y0 to Y6). The enable inputs (/E1, /E2, /E3) control the operation of the decoder/demultiplexer.

When the enable inputs are active (low), the decoder/demultiplexer is enabled, and the selected output line reflects the binary input. When any of the enable inputs are inactive (high), all output lines are disabled.

Detailed Application Field Plans

The MC74HC139ADTR2 can be used in various applications that require decoding or demultiplexing of binary information. Some potential application fields include:

  1. Address decoding in microcontrollers and microprocessors.
  2. Data routing in communication systems.
  3. Memory selection in memory devices.
  4. Signal routing in audio/video equipment.
  5. Control signal generation in industrial automation.

Detailed and Complete Alternative Models

Here are some alternative models that offer similar functionality to the MC74HC139ADTR2:

  1. SN74HC139N: Dual 2-to-4 Line Decoder/Demultiplexer, DIP-16 package.
  2. CD74HC139E: Dual 2-to-4 Line Decoder/Demultiplexer, PDIP-16 package.
  3. 74HCT139: Dual 2-to-4 Line Decoder/Demultiplexer, SOIC-16 package.

These alternative models can be considered based on specific requirements such as package type, voltage compatibility, or availability.

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Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät MC74HC139ADTR2 :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of MC74HC139ADTR2 in technical solutions:

  1. Q: What is MC74HC139ADTR2? A: MC74HC139ADTR2 is a dual 2-to-4 line decoder/demultiplexer integrated circuit (IC) that can be used in various digital logic applications.

  2. Q: What is the purpose of MC74HC139ADTR2? A: The purpose of MC74HC139ADTR2 is to decode binary inputs and select one of the four outputs based on the input combination.

  3. Q: What is the voltage supply range for MC74HC139ADTR2? A: MC74HC139ADTR2 operates with a voltage supply range of 2V to 6V.

  4. Q: How many inputs does MC74HC139ADTR2 have? A: MC74HC139ADTR2 has two 2-inputs, A0 and A1, which are used to select the output.

  5. Q: How many outputs does MC74HC139ADTR2 have? A: MC74HC139ADTR2 has four outputs, Y0, Y1, Y2, and Y3, which are selected based on the input combination.

  6. Q: What is the maximum operating frequency of MC74HC139ADTR2? A: The maximum operating frequency of MC74HC139ADTR2 is typically around 50 MHz.

  7. Q: Can MC74HC139ADTR2 be used in both TTL and CMOS logic systems? A: Yes, MC74HC139ADTR2 is compatible with both TTL and CMOS logic systems.

  8. Q: What is the power consumption of MC74HC139ADTR2? A: The power consumption of MC74HC139ADTR2 is relatively low, typically around a few milliwatts.

  9. Q: Can MC74HC139ADTR2 be cascaded to increase the number of outputs? A: Yes, multiple MC74HC139ADTR2 ICs can be cascaded together to increase the number of outputs.

  10. Q: What are some common applications of MC74HC139ADTR2? A: MC74HC139ADTR2 is commonly used in address decoding, data routing, memory selection, and other digital logic applications where input decoding is required.

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