ON Semiconductor
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MM74HC240N
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MM74HC240N

Product Overview

  • Category: Integrated Circuit
  • Use: Logic Gate Buffer/Driver
  • Characteristics: High-Speed, CMOS Technology
  • Package: DIP (Dual In-line Package)
  • Essence: Buffer/Driver IC for Logic Level Shifting
  • Packaging/Quantity: 20 pieces per tube

Specifications

  • Supply Voltage: 2V to 6V
  • Input Voltage: 0V to Vcc
  • Output Voltage: 0V to Vcc
  • Operating Temperature: -40°C to +85°C
  • Propagation Delay Time: 9 ns (typical)
  • Output Current: ±25 mA

Pin Configuration

The MM74HC240N has a total of 20 pins arranged in a dual in-line package. The pin configuration is as follows:

--------------------------------- | | 1 | 2 3 4 5 6 7 8 9 10 | | | | | 20 | 19 18 17 16 15 14 13 12 11 | ---------------------------------

Functional Features

  • Logic Level Shifting: The MM74HC240N acts as a buffer/driver, allowing logic signals to be shifted from one voltage level to another.
  • High-Speed Operation: Utilizing CMOS technology, this IC provides fast switching speeds and low power consumption.
  • Wide Supply Voltage Range: With a supply voltage range of 2V to 6V, it can be used in various applications.
  • Output Protection: The outputs are protected against short circuits and excessive current.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide supply voltage range - Output protection

Disadvantages: - Limited output current capacity - Not suitable for high-power applications

Working Principles

The MM74HC240N is based on CMOS technology, which allows for high-speed operation and low power consumption. It acts as a buffer/driver, receiving logic signals at its inputs and providing amplified and level-shifted signals at its outputs. The IC operates within the specified supply voltage range and protects its outputs against short circuits and excessive current.

Detailed Application Field Plans

The MM74HC240N can be used in various applications that require logic level shifting and signal buffering. Some of the common application fields include:

  1. Microcontroller Interfacing: The IC can be used to interface microcontrollers with different voltage levels, ensuring proper signal compatibility.
  2. Digital Communication Systems: It can be employed in digital communication systems to shift logic levels between different components, such as UARTs, SPI, or I2C interfaces.
  3. Industrial Automation: The MM74HC240N finds applications in industrial automation systems where logic signals need to be shifted and buffered for reliable operation.
  4. Consumer Electronics: It can be utilized in consumer electronics devices, such as smartphones, tablets, or gaming consoles, for level shifting and signal amplification purposes.

Detailed and Complete Alternative Models

  1. SN74HC240N: Similar functionality and specifications, offered by Texas Instruments.
  2. CD74HC240E: Equivalent buffer/driver IC provided by Texas Instruments.
  3. 74HCT240N: Alternative model with TTL compatibility, manufactured by NXP Semiconductors.

These alternative models offer similar features and can be used as substitutes for the MM74HC240N depending on availability and specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací MM74HC240N v technických řešeních

Sure! Here are 10 common questions and answers related to the application of MM74HC240N in technical solutions:

  1. Q: What is MM74HC240N? A: MM74HC240N is a popular octal buffer/line driver integrated circuit (IC) that can be used for signal buffering and driving applications.

  2. Q: What is the voltage supply range for MM74HC240N? A: The voltage supply range for MM74HC240N is typically between 2V and 6V.

  3. Q: Can MM74HC240N handle both TTL and CMOS logic levels? A: Yes, MM74HC240N is compatible with both TTL and CMOS logic levels, making it versatile for various applications.

  4. Q: How many input/output pins does MM74HC240N have? A: MM74HC240N has 8 input pins and 8 output pins, providing a total of 16 pins.

  5. Q: What is the maximum output current that MM74HC240N can drive? A: MM74HC240N can typically drive up to 35mA of output current per channel.

  6. Q: Is MM74HC240N suitable for bidirectional data transfer? A: Yes, MM74HC240N supports bidirectional data transfer, allowing data to be transmitted and received on the same pin.

  7. Q: Can MM74HC240N be used for level shifting applications? A: Yes, MM74HC240N can be used for level shifting as it can convert signals from one logic level to another.

  8. Q: Does MM74HC240N have built-in protection features? A: No, MM74HC240N does not have built-in protection features. External protection measures may be required for robust operation.

  9. Q: What is the typical propagation delay of MM74HC240N? A: The typical propagation delay of MM74HC240N is around 10ns, making it suitable for high-speed applications.

  10. Q: Can MM74HC240N be cascaded to drive more outputs? A: Yes, multiple MM74HC240N ICs can be cascaded together to drive a larger number of outputs in complex systems.

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