ON Semiconductor
قد تكون الصورة تمثيلية.
راجع المواصفات للحصول على تفاصيل المنتج.
MC74HC139ADR2G
عرض التفاصيل جداول البيانات

MC74HC139ADR2G

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Decoder/Demultiplexer
  • Characteristics: High-speed, CMOS technology
  • Package: SOIC-16
  • Essence: Dual 2-to-4 line decoder/demultiplexer
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 2V to 6V
  • High-Level Input Voltage: 2V
  • Low-Level Input Voltage: 0.8V
  • High-Level Output Current: -5.2mA
  • Low-Level Output Current: 5.2mA
  • Propagation Delay Time: 12ns
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MC74HC139ADR2G has a total of 16 pins, which are divided as follows:

  1. GND (Ground)
  2. A0 (Address Input 0)
  3. A1 (Address Input 1)
  4. E1 (Enable Input 1)
  5. Y0 (Output 0)
  6. Y1 (Output 1)
  7. Y2 (Output 2)
  8. Y3 (Output 3)
  9. VCC (Positive Power Supply)
  10. E2 (Enable Input 2)
  11. A2 (Address Input 2)
  12. A3 (Address Input 3)
  13. Y4 (Output 4)
  14. Y5 (Output 5)
  15. Y6 (Output 6)
  16. Y7 (Output 7)

Functional Features

  • Dual 2-to-4 line decoder/demultiplexer functionality
  • High-speed operation due to CMOS technology
  • Wide supply voltage range allows for versatile applications
  • Low power consumption
  • Schmitt trigger inputs for noise immunity

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data processing - Versatile supply voltage range allows for compatibility with various systems - Low power consumption reduces energy usage - Schmitt trigger inputs provide noise immunity, ensuring reliable operation

Disadvantages: - Limited number of output lines (8 in total) - Not suitable for applications requiring a larger number of outputs

Working Principles

The MC74HC139ADR2G is a decoder/demultiplexer IC that takes two address inputs (A0 and A1) and two enable inputs (E1 and E2). Based on the combination of these inputs, the IC selects one of the eight output lines (Y0 to Y7) and activates it. The selected output line carries the input signal applied to the corresponding address inputs.

Detailed Application Field Plans

The MC74HC139ADR2G can be used in various applications, including but not limited to: - Address decoding in microprocessors and microcontrollers - Data routing in digital systems - Memory selection in memory devices - Signal demultiplexing in communication systems

Detailed and Complete Alternative Models

Some alternative models to the MC74HC139ADR2G include: - 74LS139: Similar functionality, but based on TTL technology - CD74HC139: Equivalent CMOS-based decoder/demultiplexer - SN74HC139: Texas Instruments' version of the dual 2-to-4 line decoder/demultiplexer

These alternative models offer similar features and can be used as substitutes depending on specific requirements and availability.

Word count: 311 words

قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق MC74HC139ADR2G في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of MC74HC139ADR2G in technical solutions:

  1. Q: What is MC74HC139ADR2G? A: MC74HC139ADR2G 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 operating voltage range for MC74HC139ADR2G? A: The operating voltage range for MC74HC139ADR2G is typically between 2V and 6V.

  3. Q: Can MC74HC139ADR2G be used as a multiplexer? A: No, MC74HC139ADR2G is specifically designed as a decoder/demultiplexer and cannot be used as a multiplexer.

  4. Q: How many inputs does MC74HC139ADR2G have? A: MC74HC139ADR2G has two 2-inputs, which means it can decode up to four different combinations of input signals.

  5. Q: What is the output configuration of MC74HC139ADR2G? A: MC74HC139ADR2G has four active-low outputs, meaning the outputs are low when the corresponding input combination is detected.

  6. Q: What is the maximum frequency at which MC74HC139ADR2G can operate? A: MC74HC139ADR2G can typically operate at frequencies up to 50 MHz.

  7. Q: Can MC74HC139ADR2G be cascaded to increase the number of decoded outputs? A: Yes, multiple MC74HC139ADR2G ICs can be cascaded together to increase the number of decoded outputs.

  8. Q: What is the power supply current requirement for MC74HC139ADR2G? A: The power supply current requirement for MC74HC139ADR2G is typically around 4 mA.

  9. Q: Can MC74HC139ADR2G be used in both TTL and CMOS logic systems? A: Yes, MC74HC139ADR2G is compatible with both TTL and CMOS logic systems.

  10. Q: What are some common applications of MC74HC139ADR2G? A: MC74HC139ADR2G can be used in address decoding, memory selection, data routing, and other digital logic applications where decoding or demultiplexing is required.

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