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M74HC390B1R
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M74HC390B1R

Product Overview

Category

M74HC390B1R belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics applications for various purposes, such as counting and dividing signals.

Characteristics

  • High-speed operation
  • Wide operating voltage range
  • Low power consumption
  • Compatibility with other TTL families
  • Noise immunity
  • Compact size

Package

The M74HC390B1R is available in a small outline package (SOP) format.

Essence

The essence of M74HC390B1R lies in its ability to perform efficient signal counting and division tasks in digital circuits.

Packaging/Quantity

This IC is typically packaged in reels or tubes, with a quantity of 2500 units per reel/tube.

Specifications

  • Supply Voltage: 2V to 6V
  • Operating Temperature Range: -40°C to +125°C
  • Logic Family: HC
  • Number of Pins: 16
  • Maximum Clock Frequency: 25 MHz
  • Output Current: ±5.2 mA

Detailed Pin Configuration

The M74HC390B1R IC has 16 pins arranged as follows:

  1. Q0 (Output)
  2. Q1 (Output)
  3. Q2 (Output)
  4. Q3 (Output)
  5. Q4 (Output)
  6. Q5 (Output)
  7. Q6 (Output)
  8. Q7 (Output)
  9. GND (Ground)
  10. MR (Master Reset)
  11. CP (Clock Pulse Input)
  12. CE (Count Enable)
  13. QA (Output)
  14. QB (Output)
  15. VCC (Supply Voltage)
  16. QH (Output)

Functional Features

  • Divide-by-N counter functionality
  • Asynchronous master reset
  • Count enable control
  • High-speed operation
  • Noise immunity

Advantages and Disadvantages

Advantages

  • High-speed operation allows for efficient signal processing.
  • Wide operating voltage range provides flexibility in various applications.
  • Low power consumption contributes to energy efficiency.
  • Compatibility with other TTL families enables easy integration into existing systems.
  • Noise immunity ensures reliable performance in noisy environments.
  • Compact size saves valuable board space.

Disadvantages

  • Limited maximum clock frequency may restrict its use in high-frequency applications.
  • Output current limitations may require additional buffering for driving heavy loads.

Working Principles

The M74HC390B1R is a divide-by-N counter IC that operates based on the clock pulse input (CP). It counts the number of clock pulses received and divides it by N, where N is determined by the external connections. The count enable (CE) pin controls whether the counting operation is enabled or disabled. The master reset (MR) pin asynchronously resets the counter to its initial state.

Detailed Application Field Plans

The M74HC390B1R finds applications in various digital electronics fields, including but not limited to: - Frequency dividers - Digital counters - Timekeeping circuits - Data communication systems - Industrial automation - Consumer electronics

Detailed and Complete Alternative Models

Some alternative models to M74HC390B1R that offer similar functionality include: - CD4017 - SN74LS90 - 74HC393 - CD4020 - MC14040

These alternatives can be considered based on specific requirements and compatibility with the existing system.

In conclusion, the M74HC390B1R integrated circuit offers high-speed counting and dividing capabilities, making it suitable for various digital electronics applications. Its compact size, low power consumption, and compatibility with other TTL families are notable advantages. However, limitations in maximum clock frequency and output current should be considered when selecting this IC for specific applications.

Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af M74HC390B1R i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of M74HC390B1R in technical solutions:

Q1: What is the M74HC390B1R? A1: The M74HC390B1R is a high-speed CMOS dual decade ripple counter with reset.

Q2: What is the maximum operating frequency of the M74HC390B1R? A2: The maximum operating frequency of the M74HC390B1R is typically 50 MHz.

Q3: How many outputs does the M74HC390B1R have? A3: The M74HC390B1R has 10 outputs, which represent the binary count from 0 to 9.

Q4: Can the M74HC390B1R be used as a frequency divider? A4: Yes, the M74HC390B1R can be used as a frequency divider by connecting the output to the clock input.

Q5: Does the M74HC390B1R have a reset function? A5: Yes, the M74HC390B1R has an active-low asynchronous reset input (MR) that resets the counter to zero.

Q6: What is the power supply voltage range for the M74HC390B1R? A6: The power supply voltage range for the M74HC390B1R is typically between 2V and 6V.

Q7: Can the M74HC390B1R be cascaded to create larger counters? A7: Yes, multiple M74HC390B1R chips can be cascaded together to create larger counters with more bits.

Q8: What is the typical propagation delay of the M74HC390B1R? A8: The typical propagation delay of the M74HC390B1R is around 13 ns.

Q9: Does the M74HC390B1R have any special features? A9: Yes, the M74HC390B1R has a synchronous parallel load capability that allows presetting the counter to any value.

Q10: What are some common applications of the M74HC390B1R? A10: The M74HC390B1R is commonly used in applications such as frequency division, time delay generation, event counting, and digital clocks.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's specifications for the M74HC390B1R.