Texas Instruments
Gambar mungkin merupakan representasi.
Lihat spesifikasi untuk detail produk.
CD74HCT139MT
Lihat Detail Lembar Data

CD74HCT139MT

Product Overview

  • Category: Integrated Circuit
  • Use: Decoder/Demultiplexer
  • Characteristics: High-speed, CMOS technology
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Dual 2-to-4 line decoder/demultiplexer
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 2V to 6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Maximum Operating Frequency: 25 MHz
  • Propagation Delay Time: 15 ns
  • Number of Inputs: 2
  • Number of Outputs: 4

Detailed Pin Configuration

The CD74HCT139MT has a total of 16 pins. The pin configuration is as follows:

  1. GND (Ground)
  2. A0 (Input A0)
  3. A1 (Input A1)
  4. E1 (Enable Input 1)
  5. Y0 (Output Y0)
  6. Y1 (Output Y1)
  7. VCC (Positive Power Supply)
  8. Y2 (Output Y2)
  9. Y3 (Output Y3)
  10. E2 (Enable Input 2)
  11. B0 (Input B0)
  12. B1 (Input B1)
  13. Y4 (Output Y4)
  14. Y5 (Output Y5)
  15. E3 (Enable Input 3)
  16. VCC (Positive Power Supply)

Functional Features

  • Dual 2-to-4 Line Decoder/Demultiplexer functionality
  • High-speed operation suitable for various applications
  • CMOS technology ensures low power consumption
  • Wide supply voltage range allows compatibility with different systems
  • Enable inputs provide flexibility in controlling the outputs

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data processing - Low power consumption due to CMOS technology - Wide supply voltage range allows compatibility with various systems

Disadvantages: - Limited number of inputs and outputs (2 inputs, 4 outputs) - Propagation delay time may affect timing-sensitive applications

Working Principles

The CD74HCT139MT is a dual 2-to-4 line decoder/demultiplexer integrated circuit. It takes two input lines (A0 and A1) and decodes them into four output lines (Y0 to Y3). The enable inputs (E1 and E2) control the activation of each decoder section. When the enable input is high, the corresponding decoder section is active, and the selected output line reflects the input combination.

Detailed Application Field Plans

The CD74HCT139MT can be used in various applications, including but not limited to:

  1. Address decoding in microcontrollers and microprocessors
  2. Data routing and selection in digital systems
  3. Memory address decoding in memory modules
  4. Signal demultiplexing in communication systems
  5. Control signal generation in industrial automation

Detailed and Complete Alternative Models

  1. SN74LS139: Similar functionality, different package (DIP)
  2. CD4514: 4-to-16 line decoder/demultiplexer
  3. 74HC138: 3-to-8 line decoder/demultiplexer
  4. CD4017: Decade counter with decoded outputs

These alternative models provide similar or extended functionality to the CD74HCT139MT and can be considered based on specific requirements and system constraints.

Word count: 399 words

Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan CD74HCT139MT dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of CD74HCT139MT in technical solutions:

  1. Q: What is CD74HCT139MT? A: CD74HCT139MT 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 CD74HCT139MT? A: CD74HCT139MT is used to decode binary information from two input lines into four output lines, making it useful for addressing multiple devices or selecting one of several options.

  3. Q: What is the voltage range supported by CD74HCT139MT? A: CD74HCT139MT supports a voltage range of 2V to 6V, making it compatible with both TTL and CMOS logic levels.

  4. Q: How many inputs does CD74HCT139MT have? A: CD74HCT139MT has two input lines, A0 and A1, which are used to select the desired output.

  5. Q: How many outputs does CD74HCT139MT have? A: CD74HCT139MT has four output lines, Y0, Y1, Y2, and Y3, which correspond to the decoded binary input.

  6. Q: Can CD74HCT139MT be cascaded to increase the number of outputs? A: Yes, CD74HCT139MT can be cascaded by connecting the enable (E) pin of one IC to the output of another, allowing for expansion of the number of outputs.

  7. Q: What is the maximum frequency at which CD74HCT139MT can operate? A: CD74HCT139MT can operate at a maximum frequency of 25 MHz, making it suitable for high-speed digital applications.

  8. Q: Is CD74HCT139MT compatible with both positive and negative logic systems? A: Yes, CD74HCT139MT is compatible with both positive and negative logic systems, providing flexibility in various circuit designs.

  9. Q: What is the power supply voltage required for CD74HCT139MT? A: CD74HCT139MT requires a power supply voltage (VCC) between 2V and 6V, typically around 5V.

  10. Q: Can CD74HCT139MT be used in multiplexing applications? A: Yes, CD74HCT139MT can be used in multiplexing applications where multiple inputs need to be selected and routed to a single output.

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