MC74HC390AFG

Product Overview

Category: Integrated Circuit (IC)

Use: MC74HC390AFG is a high-speed CMOS dual decade ripple counter with reset. It is commonly used in digital electronics for counting and timing applications.

Characteristics: - High-speed operation - Low power consumption - Wide operating voltage range - Reset function for easy initialization - Compact package for space-saving designs

Package: MC74HC390AFG is available in a small outline integrated circuit (SOIC) package, which provides excellent thermal performance and ease of handling during assembly.

Essence: The essence of MC74HC390AFG lies in its ability to accurately count and time events in digital circuits, making it an essential component in various electronic devices.

Packaging/Quantity: MC74HC390AFG is typically sold in reels or tubes, with each reel/tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Supply Voltage Range: 2V to 6V
• Maximum Clock Frequency: 25 MHz
• Number of Counting Stages: 2 (dual decade)
• Reset Function: Active-Low
• Operating Temperature Range: -40°C to +85°C
• Input/Output Logic Levels: CMOS

Pin Configuration

MC74HC390AFG features a 16-pin SOIC package with the following pin configuration:

1. Q0A
2. Q1A
3. Q2A
4. Q3A
5. Q4A
6. Q5A
7. GND
8. Q0B
9. Q1B
10. Q2B
11. Q3B
12. Q4B
13. Q5B
14. VCC
15. MR (Master Reset)
16. CLK (Clock Input)

Functional Features

• Dual Decade Counter: MC74HC390AFG can count up to 99 in decimal, making it suitable for various counting applications.
• Ripple Counter: The counter advances on each clock pulse, allowing for continuous counting.
• Reset Function: The master reset (MR) pin allows the counter to be easily initialized to a specific value.
• High-Speed Operation: MC74HC390AFG operates at a high clock frequency of up to 25 MHz, enabling rapid counting and timing.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient counting and timing. - Low power consumption makes it suitable for battery-powered devices. - Wide operating voltage range provides flexibility in different electronic systems. - Reset function simplifies initialization and control.

Disadvantages: - Limited counting range (up to 99) may not be sufficient for certain applications requiring higher counts. - CMOS logic levels may not be compatible with all interfacing circuits.

Working Principles

MC74HC390AFG works based on the principle of ripple counting. Each clock pulse received at the CLK input increments the counter by one. The output pins represent the current count value in binary-coded decimal (BCD) format. The master reset (MR) pin can be used to reset the counter to zero.

Detailed Application Field Plans

MC74HC390AFG finds applications in various fields, including: 1. Digital frequency counters 2. Timer circuits 3. Industrial automation 4. Electronic gaming devices 5. Automotive electronics 6. Communication systems

Detailed and Complete Alternative Models

Some alternative models that can be considered as alternatives to MC74HC390AFG are: 1. CD4017BE: Decade counter with 10 outputs 2. SN74LS90N: Decade counter with asynchronous clear 3. CD4026BE: Decade counter with 7-segment display driver

These alternative models offer similar functionality and can be used as replacements depending on specific requirements.

Word count: 486 words