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74LCX244WM
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74LCX244WM

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Logic Level Shifter
  • Characteristics: Low Voltage, High-Speed CMOS Technology
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Logic Buffer/Driver
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 1.65V to 3.6V
  • Input Voltage Range: 0V to VCC
  • Output Voltage Range: 0V to VCC
  • Maximum Operating Frequency: 100MHz
  • Number of Channels: 8
  • Input/Output Type: Non-Inverting
  • Propagation Delay Time: 2.5ns (max) at 3.3V supply voltage
  • Output Drive Capability: ±24mA

Detailed Pin Configuration

The 74LCX244WM has a total of 20 pins, which are distributed as follows:

  • Pin 1: Output Enable (OE)
  • Pin 2: Input/Output (IO1)
  • Pin 3: Input/Output (IO2)
  • Pin 4: Input/Output (IO3)
  • Pin 5: Input/Output (IO4)
  • Pin 6: Ground (GND)
  • Pin 7: Input/Output (IO5)
  • Pin 8: Input/Output (IO6)
  • Pin 9: Input/Output (IO7)
  • Pin 10: Input/Output (IO8)
  • Pin 11: VCC
  • Pin 12: Input/Output (IO9)
  • Pin 13: Input/Output (IO10)
  • Pin 14: Input/Output (IO11)
  • Pin 15: Input/Output (IO12)
  • Pin 16: Input/Output (IO13)
  • Pin 17: Input/Output (IO14)
  • Pin 18: Input/Output (IO15)
  • Pin 19: Input/Output (IO16)
  • Pin 20: Output Enable (OE)

Functional Features

The 74LCX244WM is a logic buffer/driver that operates at low voltage levels. It is designed to shift logic levels between different voltage domains, making it suitable for interfacing between devices operating at different voltage levels. The non-inverting nature of the input/output channels ensures signal integrity is maintained during level shifting.

Advantages and Disadvantages

Advantages: - Low voltage operation allows compatibility with various systems - High-speed CMOS technology enables fast data transmission - Non-inverting input/output channels preserve signal integrity - Wide supply voltage range provides flexibility in system design

Disadvantages: - Limited output drive capability may restrict use in high-current applications - Propagation delay time may impact timing-sensitive applications

Working Principles

The 74LCX244WM utilizes CMOS technology to achieve low voltage operation and high-speed performance. It consists of eight input/output channels that can be enabled or disabled using the Output Enable (OE) pins. When enabled, the input signals are buffered and amplified to match the desired output voltage levels. The non-inverting nature of the channels ensures that the output signals faithfully represent the input signals.

Detailed Application Field Plans

The 74LCX244WM finds application in various fields where logic level shifting is required. Some specific examples include:

  1. Microcontroller Interfacing: The IC can be used to interface microcontrollers operating at different voltage levels, allowing seamless communication between them.
  2. Sensor Networks: In sensor networks, where sensors operate at different voltage levels, the 74LCX244WM can be employed to ensure proper signal transfer between the sensors and the central processing unit.
  3. Communication Systems: The IC can be utilized in communication systems to interface between different modules operating at varying voltage levels, ensuring reliable data transmission.

Detailed and Complete Alternative Models

  1. 74HCT244: This IC is a similar logic buffer/driver but operates at higher voltage levels (4.5V to 5.5V).
  2. SN74LVC244A: Another alternative that offers low voltage operation with a wider supply voltage range (1.2V to 3.6V).
  3. CD74HC244: This IC provides high-speed CMOS performance but operates at higher voltage levels (2V to 6V).

These alternative models offer similar functionality to the 74LCX244WM but may have different specifications and pin configurations.

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Lista 10 Vanliga frågor och svar relaterade till tillämpningen av 74LCX244WM i tekniska lösningar

Sure! Here are 10 common questions and answers related to the application of 74LCX244WM:

  1. Q: What is the 74LCX244WM?

    • A: The 74LCX244WM is a 20-pin, octal buffer/line driver with 3-state outputs. It is commonly used in digital logic circuits.

  2. Q: What is the maximum operating voltage for the 74LCX244WM?

    • A: The maximum operating voltage for the 74LCX244WM is 3.6V.

  3. Q: Can the 74LCX244WM be used as a level shifter?

    • A: Yes, the 74LCX244WM can be used as a level shifter to convert signals between different voltage levels.

  4. Q: How many inputs and outputs does the 74LCX244WM have?

    • A: The 74LCX244WM has 8 inputs and 8 outputs.

  5. Q: What is the purpose of the 3-state outputs in the 74LCX244WM?

    • A: The 3-state outputs allow multiple devices to share a common bus without interfering with each other.

  6. Q: What is the maximum output current that the 74LCX244WM can drive?

    • A: The 74LCX244WM can drive up to 24mA of current per output.

  7. Q: Can the 74LCX244WM be used in high-speed applications?

    • A: Yes, the 74LCX244WM is designed for high-speed operation and can be used in applications with fast switching requirements.

  8. Q: Does the 74LCX244WM have built-in protection against overvoltage or overcurrent?

    • A: No, the 74LCX244WM does not have built-in protection against overvoltage or overcurrent. External protection measures may be required.

  9. Q: Can the 74LCX244WM be used in both CMOS and TTL logic systems?

    • A: Yes, the 74LCX244WM is compatible with both CMOS and TTL logic levels.

  10. Q: What is the power supply voltage range for the 74LCX244WM?

    • A: The power supply voltage range for the 74LCX244WM is typically between 2.0V and 3.6V.

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