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MC74LCX138DTR2G
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MC74LCX138DTR2G

Product Overview

  • Category: Integrated Circuit
  • Use: Decoding/Demultiplexing
  • Characteristics: Low-voltage, high-speed, 3-to-8 line decoder/demultiplexer
  • Package: TSSOP-16
  • Essence: Efficient decoding and demultiplexing solution
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 1.65V to 5.5V
  • High-Speed Operation: tPD = 4.5 ns (typ) at VCC = 3.3V
  • Low Power Consumption: ICC = 4 µA (max) at TA = 25°C
  • Output Drive Capability: ±24 mA at VCC = 3.0V
  • Input Voltage Levels: VIH = 2.0V, VIL = 0.8V
  • ESD Performance: Human Body Model > 2000V, Machine Model > 200V

Detailed Pin Configuration

The MC74LCX138DTR2G has a total of 16 pins, which are assigned as follows:

  1. A0 - Address input 0
  2. A1 - Address input 1
  3. A2 - Address input 2
  4. GND - Ground
  5. Y0 - Output 0
  6. Y1 - Output 1
  7. Y2 - Output 2
  8. Y3 - Output 3
  9. Y4 - Output 4
  10. Y5 - Output 5
  11. Y6 - Output 6
  12. Y7 - Output 7
  13. E1 - Enable input 1
  14. E2 - Enable input 2
  15. E3 - Enable input 3
  16. VCC - Supply voltage

Functional Features

The MC74LCX138DTR2G is a low-voltage, high-speed decoder/demultiplexer IC. It takes a 3-bit binary address as input and generates eight output lines corresponding to the active input. The enable inputs (E1, E2, E3) control the operation of the decoder/demultiplexer. When enabled, the selected output line becomes active, while all other outputs remain inactive.

Advantages and Disadvantages

Advantages: - Low-voltage operation allows compatibility with various systems - High-speed operation enables quick decoding and demultiplexing - Low power consumption reduces energy requirements - Compact TSSOP-16 package offers space-saving benefits - Robust ESD performance ensures reliability

Disadvantages: - Limited to 3-to-8 line decoding/demultiplexing functionality - May not be suitable for applications requiring higher bit decoding

Working Principles

The MC74LCX138DTR2G utilizes a combination of logic gates to decode the input address and activate the corresponding output line. The enable inputs control the selection of the desired output. When an enable input is activated, the decoder/demultiplexer routes the input address to the corresponding output line, enabling data transmission.

Detailed Application Field Plans

The MC74LCX138DTR2G finds applications in various fields, including but not limited to:

  1. Address decoding in microcontrollers and microprocessors
  2. Memory selection in digital systems
  3. Data routing in communication systems
  4. Signal demultiplexing in multimedia devices
  5. Control circuitry in industrial automation

Detailed and Complete Alternative Models

  1. SN74LS138N: Similar 3-to-8 line decoder/demultiplexer from Texas Instruments
  2. CD74HC238E: High-speed CMOS 3-to-8 line decoder/demultiplexer from Texas Instruments
  3. 74HC138D: 3-to-8 line decoder/demultiplexer with Schmitt-trigger inputs from NXP Semiconductors

These alternative models offer similar functionality and can be considered as substitutes for the MC74LCX138DTR2G in various applications.

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技術ソリューションにおける MC74LCX138DTR2G 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 MC74LCX138DTR2G in technical solutions:

  1. Q: What is MC74LCX138DTR2G? A: MC74LCX138DTR2G 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 MC74LCX138DTR2G? A: The purpose of MC74LCX138DTR2G is to decode a binary input and activate one of the eight output lines based on the input value.

  3. Q: What voltage levels does MC74LCX138DTR2G support? A: MC74LCX138DTR2G supports voltage levels ranging from 2.0V to 3.6V, making it suitable for low-voltage applications.

  4. Q: How many inputs does MC74LCX138DTR2G have? A: MC74LCX138DTR2G has three binary inputs (A0, A1, and A2) that determine which output line will be activated.

  5. Q: How many output lines does MC74LCX138DTR2G have? A: MC74LCX138DTR2G has eight output lines (Y0-Y7), each corresponding to a specific combination of the input values.

  6. Q: Can MC74LCX138DTR2G be cascaded to increase the number of output lines? A: Yes, MC74LCX138DTR2G can be cascaded with other decoders to increase the number of output lines in a system.

  7. Q: What is the maximum frequency at which MC74LCX138DTR2G can operate? A: MC74LCX138DTR2G can operate at a maximum frequency of 100 MHz, making it suitable for high-speed applications.

  8. Q: Does MC74LCX138DTR2G have any built-in protection features? A: Yes, MC74LCX138DTR2G has built-in ESD (electrostatic discharge) protection to safeguard against electrostatic damage.

  9. Q: Can MC74LCX138DTR2G be used in both commercial and industrial applications? A: Yes, MC74LCX138DTR2G is designed to meet the requirements of both commercial and industrial applications.

  10. Q: What package options are available for MC74LCX138DTR2G? A: MC74LCX138DTR2G is available in various package options, including SOIC-16, TSSOP-16, and PDIP-16.

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