ON Semiconductor
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74LCX2244MTCX
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74LCX2244MTCX

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Logic Level Translator
  • Characteristics: Low Voltage, High-Speed, Bidirectional
  • Package: TSSOP-20
  • Essence: Logic Level Translation between 3.3V and 5V systems
  • Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

  • Supply Voltage: 1.65V to 3.6V
  • Logic Family: LCX
  • Number of Channels: 8
  • Input Voltage Levels: 3.3V
  • Output Voltage Levels: 5V
  • Propagation Delay: 2.5ns (Max)
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74LCX2244MTCX has a TSSOP-20 package with the following pin configuration:

___________ | | A1 |1 20| VCCB A2 |2 19| OE# B1 |3 18| I/O1B B2 |4 17| I/O2B GND |5 16| I/O3B I/O1A |6 15| I/O4B I/O2A |7 14| I/O5B I/O3A |8 13| I/O6B I/O4A |9 12| I/O7B I/O5A |10 11| I/O8B |___________|

Functional Features

  • Bidirectional voltage level translation between 3.3V and 5V systems.
  • Supports up to 8 channels for simultaneous translation.
  • Low voltage operation allows compatibility with modern low-power devices.
  • High-speed operation with minimal propagation delay.
  • Output enable (OE#) pin for easy control of the direction of translation.

Advantages

  • Enables seamless communication between different voltage level systems.
  • Wide operating voltage range allows compatibility with various devices.
  • Compact TSSOP-20 package saves board space.
  • High-speed operation ensures efficient data transfer.
  • Easy control of direction using the OE# pin.

Disadvantages

  • Limited to bidirectional voltage level translation only.
  • Not suitable for applications requiring translation between voltages other than 3.3V and 5V.
  • May not be compatible with older devices operating at higher voltages.

Working Principles

The 74LCX2244MTCX utilizes a combination of MOSFETs and CMOS technology to achieve bidirectional voltage level translation. It operates by monitoring the input voltage levels and translating them to the desired output voltage levels based on the logic levels specified. The OE# pin controls the direction of translation, allowing seamless communication between 3.3V and 5V systems.

Detailed Application Field Plans

The 74LCX2244MTCX is commonly used in various applications that require voltage level translation between 3.3V and 5V systems. Some typical application fields include:

  1. Microcontroller interfacing with peripherals operating at different voltage levels.
  2. Communication interfaces between different logic families.
  3. Level shifting in mixed-voltage systems.
  4. Data transmission between low-power devices and standard logic devices.
  5. Sensor interfacing with microcontrollers or digital circuits.

Detailed and Complete Alternative Models

  1. SN74LVC4245A: Bidirectional voltage level translator with similar specifications and package options.
  2. TXB0108: Octal bidirectional voltage level translator with automatic direction sensing.
  3. PCA9306: Dual bidirectional I2C-bus and SMBus voltage level translator.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan 74LCX2244MTCX dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of 74LCX2244MTCX in technical solutions:

  1. Q: What is the 74LCX2244MTCX? A: The 74LCX2244MTCX is a low-voltage octal buffer/line driver with 3-state outputs, commonly used in digital logic applications.

  2. Q: What is the operating voltage range of the 74LCX2244MTCX? A: The 74LCX2244MTCX operates at a voltage range of 2.0V to 3.6V.

  3. Q: How many inputs and outputs does the 74LCX2244MTCX have? A: The 74LCX2244MTCX has 8 inputs and 8 outputs.

  4. Q: Can the 74LCX2244MTCX handle bidirectional communication? A: No, the 74LCX2244MTCX is a unidirectional buffer/line driver and does not support bidirectional communication.

  5. Q: What is the maximum output current of the 74LCX2244MTCX? A: The 74LCX2244MTCX can source or sink up to 24mA of current per output.

  6. Q: Does the 74LCX2244MTCX have internal pull-up or pull-down resistors? A: No, the 74LCX2244MTCX does not have internal pull-up or pull-down resistors.

  7. Q: Can I connect multiple 74LCX2244MTCX devices together? A: Yes, you can connect multiple 74LCX2244MTCX devices together to expand the number of inputs and outputs.

  8. Q: What is the propagation delay of the 74LCX2244MTCX? A: The propagation delay of the 74LCX2244MTCX is typically around 3.5ns.

  9. Q: Can I use the 74LCX2244MTCX in high-speed applications? A: Yes, the 74LCX2244MTCX is designed for high-speed operation and can be used in such applications.

  10. Q: Are there any special considerations when designing with the 74LCX2244MTCX? A: It is important to ensure proper decoupling capacitors are used near the power supply pins to minimize noise and voltage fluctuations. Additionally, care should be taken to avoid exceeding the maximum voltage and current ratings specified in the datasheet.