Texas Instruments
画像はイメージの場合もございます。
商品詳細は仕様をご覧ください。
SN74LVC139APWT
詳細を表示 DataSheets

SN74LVC139APWT

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Decoder/Demultiplexer
  • Characteristics:
    • Low-voltage CMOS technology
    • High-speed operation
    • Wide operating voltage range
    • Low power consumption
  • Package: TSSOP-16
  • Essence: Dual 2-to-4 line decoder/demultiplexer
  • 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
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 3.8 ns (typical)
  • Maximum Quiescent Current: 10 µA
  • Maximum Output Current: ±32 mA

Detailed Pin Configuration

The SN74LVC139APWT has a total of 16 pins arranged as follows:

__ __ A1 |1 \__/ 16| VCC A0 |2 15| Y0 E1 |3 14| Y1 E2 |4 13| Y2 Y3 |5 12| GND Y4 |6 11| B0 Y5 |7 10| B1 Y6 |8 9| B2 ‾‾ ‾‾

Functional Features

  • Dual 2-to-4 line decoding capability
  • Active-low enable inputs (E1 and E2)
  • Individual active-low outputs (Y0-Y6)
  • Allows for easy expansion of input lines
  • High-speed operation for time-critical applications
  • Low power consumption for energy-efficient designs

Advantages and Disadvantages

Advantages: - Wide operating voltage range allows compatibility with various systems - Low power consumption reduces energy usage and heat dissipation - High-speed operation enables efficient data processing - Compact TSSOP-16 package saves board space

Disadvantages: - Limited number of output lines (7 in this case) - Not suitable for applications requiring a larger number of output lines

Working Principles

The SN74LVC139APWT is a decoder/demultiplexer IC that takes two binary inputs (A1 and A0) and two enable inputs (E1 and E2). Based on the input combination, it activates one of the seven outputs (Y0-Y6) while keeping the rest inactive. The active-low enable inputs control the decoding process, allowing the selection of specific output lines.

Detailed Application Field Plans

The SN74LVC139APWT finds applications in various fields, including:

  1. Address decoding in microcontrollers and microprocessors
  2. Memory expansion in computer systems
  3. Data routing in communication networks
  4. Signal demultiplexing in digital audio/video systems
  5. Control logic in industrial automation

Detailed and Complete Alternative Models

  1. 74HC139: Similar dual 2-to-4 line decoder/demultiplexer IC with slightly different specifications.
  2. CD74HCT139: Dual 2-to-4 line decoder/demultiplexer IC with TTL-compatible inputs.
  3. SN74LS139: Dual 2-to-4 line decoder/demultiplexer IC with higher power consumption but lower propagation delay.

These alternative models offer similar functionality to the SN74LVC139APWT and can be used as replacements depending on specific requirements.

Word count: 420 words

技術ソリューションにおける SN74LVC139APWT の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of SN74LVC139APWT:

  1. Q: What is SN74LVC139APWT? A: SN74LVC139APWT is a dual 2-to-4 line decoder/demultiplexer integrated circuit (IC) manufactured by Texas Instruments.

  2. Q: What is the purpose of SN74LVC139APWT? A: SN74LVC139APWT is used to decode binary information from two input lines into four output lines, making it useful in various digital applications.

  3. Q: What is the voltage range supported by SN74LVC139APWT? A: SN74LVC139APWT supports a wide voltage range of 1.65V to 5.5V, making it compatible with both low-voltage and standard CMOS logic levels.

  4. Q: How many inputs does SN74LVC139APWT have? A: SN74LVC139APWT has two input lines, A0 and A1, which can be used to select one of the four output lines.

  5. Q: How many output lines does SN74LVC139APWT have? A: SN74LVC139APWT has four output lines, Y0, Y1, Y2, and Y3, which correspond to the decoded binary input.

  6. Q: Can SN74LVC139APWT be cascaded to increase the number of outputs? A: Yes, multiple SN74LVC139APWT ICs can be cascaded together to increase the number of outputs and achieve higher decoding capabilities.

  7. Q: What is the maximum frequency at which SN74LVC139APWT can operate? A: SN74LVC139APWT can operate at a maximum frequency of 100 MHz, making it suitable for high-speed digital applications.

  8. Q: Does SN74LVC139APWT have any built-in protection features? A: Yes, SN74LVC139APWT has built-in ESD (electrostatic discharge) protection, which helps safeguard the IC against damage from static electricity.

  9. Q: What is the package type of SN74LVC139APWT? A: SN74LVC139APWT is available in a TSSOP-16 package, which is a small surface-mount package with 16 pins.

  10. Q: Where can I find more information about using SN74LVC139APWT in my technical solution? A: You can refer to the datasheet provided by Texas Instruments for detailed information on the pin configuration, electrical characteristics, and application examples of SN74LVC139APWT.