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SN74LS280NSR
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SN74LS280NSR

Product Overview

Category: Integrated Circuit (IC)

Use: The SN74LS280NSR is a 9-bit magnitude comparator IC. It is designed to compare two 9-bit binary numbers and determine their relationship (greater than, less than, or equal).

Characteristics: - High-speed operation - Low power consumption - Wide operating voltage range - TTL compatible inputs and outputs

Package: The SN74LS280NSR is available in a small-outline package (SOIC) with 14 pins.

Essence: The essence of the SN74LS280NSR lies in its ability to perform fast and accurate comparisons between two 9-bit binary numbers.

Packaging/Quantity: The SN74LS280NSR is typically sold in reels containing 2500 units per reel.

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Operating Temperature Range: -40°C to +85°C
  • Input Voltage High: 2.0V (min), 0.8V (max)
  • Input Voltage Low: 0.8V (min), 0.4V (max)
  • Output Voltage High: 2.7V (min), 3.4V (max)
  • Output Voltage Low: 0.35V (max)

Detailed Pin Configuration

The SN74LS280NSR has 14 pins arranged as follows:

  1. A0: Input pin for the least significant bit (LSB) of the first 9-bit number.
  2. A1: Input pin for the second LSB of the first 9-bit number.
  3. A2: Input pin for the third LSB of the first 9-bit number.
  4. A3: Input pin for the fourth LSB of the first 9-bit number.
  5. A4: Input pin for the fifth LSB of the first 9-bit number.
  6. A5: Input pin for the sixth LSB of the first 9-bit number.
  7. A6: Input pin for the seventh LSB of the first 9-bit number.
  8. A7: Input pin for the eighth LSB of the first 9-bit number.
  9. A8: Input pin for the most significant bit (MSB) of the first 9-bit number.
  10. B0: Input pin for the LSB of the second 9-bit number.
  11. B1: Input pin for the second LSB of the second 9-bit number.
  12. B2: Input pin for the third LSB of the second 9-bit number.
  13. B3: Input pin for the fourth LSB of the second 9-bit number.
  14. B4: Input pin for the fifth LSB of the second 9-bit number.

Functional Features

  • Fast comparison operation: The SN74LS280NSR can compare two 9-bit binary numbers in a single clock cycle, providing quick results.
  • Output indication: The IC provides three output signals indicating whether the first number is greater than, less than, or equal to the second number.
  • Cascadable: Multiple SN74LS280NSR ICs can be cascaded together to compare larger binary numbers.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient processing of binary comparisons. - Low power consumption makes it suitable for battery-powered devices. - Wide operating voltage range ensures compatibility with various systems. - TTL compatible inputs and outputs simplify integration into existing circuits.

Disadvantages: - Limited to comparing 9-bit binary numbers, not suitable for larger comparisons. - Requires external clock signal for operation. - May produce erroneous results if input signals are not stable during comparison.

Working Principles

The SN74LS280NSR compares two 9-bit binary numbers by performing a bit-by-bit comparison from the most significant bit (MSB) to the least significant bit (LSB). It utilizes internal logic gates to determine the relationship between the two numbers. The output signals indicate whether the first number is greater than, less than, or equal to the second number.

Detailed Application Field Plans

The SN74LS280NSR can be used in various applications that require binary number comparisons, such as: - Arithmetic circuits - Data processing systems - Control systems - Digital signal processing

Detailed and Complete Alternative Models

Some alternative models to the SN74LS280NSR include: - SN74LS181: A 4-bit arithmetic logic unit (ALU) with additional functions. - SN74LS682: An 8-bit magnitude comparator with parallel outputs. - SN74LS283: A 4-bit binary full adder with fast carry propagation.

These alternative models offer similar functionalities but may have different specifications and pin configurations.

In conclusion, the SN74LS280NSR is a

Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng SN74LS280NSR sa mga teknikal na solusyon

Sure! Here are 10 common questions and answers related to the application of SN74LS280NSR:

  1. Q: What is SN74LS280NSR? A: SN74LS280NSR is a specific model number for a 9-bit magnitude comparator integrated circuit (IC) manufactured by Texas Instruments.

  2. Q: What is the purpose of a magnitude comparator IC? A: A magnitude comparator IC is used to compare two binary numbers and determine their relative magnitudes (greater than, less than, or equal).

  3. Q: What are the key features of SN74LS280NSR? A: SN74LS280NSR has 9 inputs (A0-A8) for one binary number, 9 inputs (B0-B8) for another binary number, and various output pins to indicate the comparison result.

  4. Q: How do I connect SN74LS280NSR in my circuit? A: You need to connect the power supply (VCC and GND) pins, input pins (A0-A8 and B0-B8), and output pins (such as EQ, GT, LT) as per your circuit requirements.

  5. Q: Can SN74LS280NSR handle both positive and negative logic inputs? A: No, SN74LS280NSR is designed for positive logic inputs only. It interprets a high voltage level (VCC) as logic 1 and a low voltage level (GND) as logic 0.

  6. Q: What is the maximum operating frequency of SN74LS280NSR? A: The maximum operating frequency of SN74LS280NSR is typically around 33 MHz.

  7. Q: Can SN74LS280NSR be used in both digital and analog circuits? A: No, SN74LS280NSR is specifically designed for digital circuits and is not suitable for analog applications.

  8. Q: What is the power supply voltage range for SN74LS280NSR? A: The recommended power supply voltage range for SN74LS280NSR is typically between 4.75V and 5.25V.

  9. Q: Can I cascade multiple SN74LS280NSR ICs to compare larger binary numbers? A: Yes, you can cascade multiple SN74LS280NSR ICs to compare larger binary numbers by connecting the output pins of one IC to the input pins of another.

  10. Q: Are there any specific precautions to consider while using SN74LS280NSR? A: It is important to avoid exceeding the maximum ratings specified in the datasheet, provide proper decoupling capacitors, and ensure correct pin connections to prevent damage or incorrect operation.

Please note that these answers are general and may vary depending on the specific application and circuit requirements. Always refer to the datasheet and consult with technical experts for accurate information.