M74HC280B1R

Product Overview

• Category: Integrated Circuit (IC)
• Use: Binary Counter
• Characteristics: High-Speed, CMOS Logic, 9-Bit Counter
• Package: SOIC-14
• Essence: The M74HC280B1R is a high-speed CMOS logic IC that functions as a 9-bit binary counter. It is commonly used in digital electronics applications for counting and sequencing purposes.
• Packaging/Quantity: The M74HC280B1R is available in a small outline integrated circuit (SOIC) package, which contains 14 pins. It is typically sold in reels or tubes, with a quantity of 250 or 2,500 units per reel/tube.

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HC
• Number of Bits: 9
• Maximum Clock Frequency: 25 MHz
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay: 13 ns (typical)

Detailed Pin Configuration

The M74HC280B1R has a total of 14 pins, each serving a specific function:

1. GND: Ground
2. A0: Input A0
3. A1: Input A1
4. A2: Input A2
5. A3: Input A3
6. A4: Input A4
7. A5: Input A5
8. A6: Input A6
9. A7: Input A7
10. A8: Input A8
11. CET: Count Enable
12. P: Parallel Load
13. QH: Output QH
14. VCC: Supply Voltage

Functional Features

• Binary Counter: The M74HC280B1R functions as a 9-bit binary counter, capable of counting from 0 to 511 (2^9 - 1).
• Parallel Load: The parallel load input (P) allows the user to load a specific value into the counter.
• Count Enable: The count enable input (CET) enables or disables the counting operation.
• High-Speed Operation: The M74HC280B1R is designed for high-speed operation, with a maximum clock frequency of 25 MHz.
• CMOS Logic: This IC utilizes CMOS logic technology, providing low power consumption and high noise immunity.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Wide operating voltage range - Compact SOIC package - Easy integration into digital circuits

Disadvantages: - Limited number of bits (9 bits) - Not suitable for applications requiring higher bit counts - May require additional external components for certain applications

Working Principles

The M74HC280B1R operates based on the principles of binary counting. It counts in binary format from 000000000 to 111111111 (0 to 511 in decimal). The counter can be loaded with a specific value using the parallel load input (P), and the count enable input (CET) controls the counting operation. The output QH provides the current count value.

Detailed Application Field Plans

The M74HC280B1R finds applications in various fields, including:

1. Digital Counters: Used in electronic devices that require counting and sequencing operations, such as frequency dividers, timers, and event counters.
2. Data Processing: Can be utilized in data processing systems for address generation, memory control, and data manipulation.
3. Communication Systems: Suitable for use in communication systems for signal processing, channel selection, and synchronization.
4. Industrial Automation: Used in industrial automation systems for position control, motor speed control, and process monitoring.

Detailed and Complete Alternative Models

1. SN74HC280N: Similar 9-bit binary counter IC from Texas Instruments.
2. CD4024BE: 7-stage binary ripple counter IC from Texas Instruments.
3. MC14024B: 7-stage binary counter IC from ON Semiconductor.

These alternative models provide similar functionality to the M74HC280B1R and can be used as substitutes depending on specific requirements.

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