CD74AC280M
- Created at: 2023-10-30 06:25:37 , by WikiIC
- Updated at: 2023-10-30 06:25:37
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CD74AC280M
Product Overview
Category
CD74AC280M belongs to the category of integrated circuits (ICs).
Use
This IC is commonly used in digital systems for arithmetic operations and data processing.
Characteristics
- CD74AC280M is a 9-bit magnitude comparator.
- It operates on a supply voltage range of 2V to 6V.
- The IC has a low power consumption and high noise immunity.
- It offers fast propagation delay and high-speed operation.
Package
The CD74AC280M is available in a small outline integrated circuit (SOIC) package.
Essence
The essence of CD74AC280M lies in its ability to compare two 9-bit binary numbers and determine their relative magnitudes.
Packaging/Quantity
The CD74AC280M is typically packaged in reels or tubes, with quantities varying based on customer requirements.
Specifications
- Supply Voltage Range: 2V to 6V
- Operating Temperature Range: -40°C to +85°C
- Input Voltage High Level (VIH): 2V to VCC + 0.5V
- Input Voltage Low Level (VIL): -0.5V to 0.8V
- Output Voltage High Level (VOH): VCC - 0.5V
- Output Voltage Low Level (VOL): 0.4V
- Propagation Delay Time: 7ns (typical)
Detailed Pin Configuration
The CD74AC280M has a total of 16 pins, which are assigned specific functions as follows:
- A0: Input pin for the least significant bit (LSB) of the first 9-bit number.
- A1: Input pin for the second bit of the first 9-bit number.
- A2: Input pin for the third bit of the first 9-bit number.
- A3: Input pin for the fourth bit of the first 9-bit number.
- A4: Input pin for the fifth bit of the first 9-bit number.
- A5: Input pin for the sixth bit of the first 9-bit number.
- A6: Input pin for the seventh bit of the first 9-bit number.
- A7: Input pin for the eighth bit of the first 9-bit number.
- A8: Input pin for the most significant bit (MSB) of the first 9-bit number.
- B0: Input pin for the LSB of the second 9-bit number.
- B1: Input pin for the second bit of the second 9-bit number.
- B2: Input pin for the third bit of the second 9-bit number.
- B3: Input pin for the fourth bit of the second 9-bit number.
- B4: Input pin for the fifth bit of the second 9-bit number.
- B5: Input pin for the sixth bit of the second 9-bit number.
- B6: Input pin for the seventh bit of the second 9-bit number.
Functional Features
- CD74AC280M performs a magnitude comparison between two 9-bit binary numbers.
- It provides three output signals: EQ (Equal), GT (Greater Than), and LT (Less Than).
- The EQ signal is high when the two input numbers are equal.
- The GT signal is high when the first input number is greater than the second.
- The LT signal is high when the first input number is less than the second.
Advantages and Disadvantages
Advantages
- Fast propagation delay enables high-speed operation.
- Low power consumption ensures energy efficiency.
- High noise immunity enhances reliability.
- Compact SOIC package allows for space-saving integration.
Disadvantages
- Limited to comparing 9-bit binary numbers.
- Requires external circuitry for cascading multiple comparators.
Working Principles
CD74AC280M compares the two 9-bit binary numbers by examining each bit from the MSB to the LSB. It determines the relative magnitude of the numbers based on the logic levels at the input pins. The internal circuitry performs the necessary logical operations to generate the EQ, GT, and LT output signals.
Detailed Application Field Plans
CD74AC280M finds applications in various digital systems where magnitude comparison is required. Some potential application fields include:
- Arithmetic units in microprocessors and microcontrollers.
- Data sorting and searching algorithms.
- Digital signal processing circuits.
- Error detection and correction mechanisms.
- Control systems for industrial automation.
Detailed and Complete Alternative Models
- CD74AC280E: Similar to CD74AC280M but available in a different package (PDIP).
- SN74LS85: 4-bit magnitude comparator with similar functionality.
- CD
List 10 common questions and answers related to the application of CD74AC280M in technical solutions
Sure! Here are 10 common questions and answers related to the application of CD74AC280M in technical solutions:
Q: What is CD74AC280M? A: CD74AC280M is a 9-bit magnitude comparator integrated circuit (IC) that can be used in various digital applications.
Q: What is the purpose of CD74AC280M? A: The purpose of CD74AC280M is to compare two 9-bit binary numbers and determine their relative magnitudes.
Q: How does CD74AC280M work? A: CD74AC280M compares each corresponding bit of the two input numbers and generates output signals indicating whether one number is greater, equal, or less than the other.
Q: What voltage levels does CD74AC280M support? A: CD74AC280M operates with a supply voltage range of 2V to 6V, making it compatible with both TTL and CMOS logic families.
Q: Can CD74AC280M handle negative numbers? A: No, CD74AC280M is designed to compare positive binary numbers only. It does not support signed or negative numbers.
Q: What is the maximum frequency at which CD74AC280M can operate? A: CD74AC280M has a maximum operating frequency of typically 125 MHz, allowing for high-speed digital applications.
Q: Can CD74AC280M be cascaded to compare larger numbers? A: Yes, multiple CD74AC280M ICs can be cascaded together to compare larger numbers by connecting the carry-out (Cn) of one IC to the carry-in (Ci) of the next.
Q: Are there any special considerations for interfacing CD74AC280M with other ICs? A: CD74AC280M has standard TTL/CMOS-compatible inputs and outputs, so it can be easily interfaced with other digital ICs without any special considerations.
Q: What are the typical applications of CD74AC280M? A: CD74AC280M is commonly used in arithmetic logic units (ALUs), microprocessors, digital signal processors, and other digital systems that require magnitude comparison.
Q: Are there any alternative ICs to CD74AC280M for magnitude comparison? A: Yes, there are other ICs available from different manufacturers that perform similar magnitude comparison functions, such as 74HC85 or SN74LS682.
Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.
- https://chipmlcc.ru/product/details/texas-instruments/cd74ac280m.html [PDF download, circuit diagram, pin configuration, detailed specifications, and more electronic component spot channels.]
- https://www.chipmlcc.com/product/details/texas-instruments/cd74ac280m.html [PDF download, circuit diagram, pin configuration, detailed specifications, and more electronic component spot channels.]
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