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CD74HC85NSR
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CD74HC85NSR

Product Overview

Category

CD74HC85NSR belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in digital electronics for arithmetic operations, specifically for performing binary magnitude comparisons.

Characteristics

  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • Compatibility with TTL inputs
  • Schmitt-trigger action on all inputs
  • Balanced propagation delay and transition times

Package

CD74HC85NSR is available in a small-outline package (SOIC) with 16 pins.

Essence

The essence of CD74HC85NSR lies in its ability to compare two 4-bit binary numbers and provide outputs indicating their relative magnitudes.

Packaging/Quantity

CD74HC85NSR is typically packaged in reels or tubes, with a quantity of 2500 units per reel or 98 units per tube.

Specifications

  • Supply Voltage: 2V to 6V
  • Input Voltage: 0V to VCC
  • Output Voltage: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Maximum Propagation Delay: 20 ns
  • Maximum Quiescent Current: 4 μA

Detailed Pin Configuration

  1. A3 (Input)
  2. B3 (Input)
  3. A2 (Input)
  4. B2 (Input)
  5. A1 (Input)
  6. B1 (Input)
  7. A0 (Input)
  8. B0 (Input)
  9. LT (Output)
  10. EQ (Output)
  11. GT (Output)
  12. GND (Ground)
  13. CARRY (Output)
  14. P (Output)
  15. G1 (Input)
  16. VCC (Supply Voltage)

Functional Features

  • Magnitude comparison of two 4-bit binary numbers
  • Outputs indicating less than (LT), equal to (EQ), or greater than (GT)
  • Carry output for cascading multiple ICs

Advantages

  • High-speed operation allows for efficient processing of binary magnitude comparisons.
  • Low power consumption makes it suitable for battery-powered devices.
  • Wide operating voltage range provides flexibility in various applications.
  • Compatibility with TTL inputs enables easy integration with existing digital circuits.
  • Schmitt-trigger action on all inputs ensures reliable and noise-immune operation.
  • Balanced propagation delay and transition times enhance overall system performance.

Disadvantages

  • Limited to comparing 4-bit binary numbers, not suitable for larger data sizes.
  • May require additional circuitry for complex arithmetic operations beyond magnitude comparison.

Working Principles

CD74HC85NSR compares two 4-bit binary numbers by examining each corresponding bit and determining their relative magnitudes. The outputs LT, EQ, and GT indicate whether the first number is less than, equal to, or greater than the second number, respectively. The carry output allows for cascading multiple ICs to compare larger binary numbers.

Detailed Application Field Plans

CD74HC85NSR finds applications in various fields, including: 1. Digital calculators 2. Microcontrollers 3. Data sorting and filtering systems 4. Arithmetic logic units (ALUs) 5. Binary-coded decimal (BCD) converters

Detailed and Complete Alternative Models

  1. SN74HC85N: Similar functionality and specifications, available in DIP package.
  2. CD54HC85F3A: Higher speed operation, available in flat pack package.
  3. MC74HC85ADR2G: Lower power consumption, available in SOIC package.

These alternative models offer similar features and can be used as substitutes for CD74HC85NSR based on specific requirements.

In conclusion, CD74HC85NSR is a versatile integrated circuit used for binary magnitude comparisons. Its high-speed operation, low power consumption, and compatibility with TTL inputs make it suitable for various digital applications. However, its limited data size capability and potential need for additional circuitry for complex arithmetic operations should be considered.

Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan CD74HC85NSR dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of CD74HC85NSR in technical solutions:

  1. Q: What is CD74HC85NSR? A: CD74HC85NSR is a high-speed CMOS (Complementary Metal-Oxide-Semiconductor) 4-bit magnitude comparator integrated circuit.

  2. Q: What are the typical applications of CD74HC85NSR? A: CD74HC85NSR is commonly used in digital systems for comparing binary numbers, address decoding, code conversion, and arithmetic operations.

  3. Q: What is the operating voltage range of CD74HC85NSR? A: CD74HC85NSR operates within a voltage range of 2V to 6V.

  4. Q: What is the maximum clock frequency supported by CD74HC85NSR? A: CD74HC85NSR can operate at a maximum clock frequency of 50 MHz.

  5. Q: How many inputs and outputs does CD74HC85NSR have? A: CD74HC85NSR has four inputs (A0, A1, B0, B1) and three outputs (A<B, A=B, A>B).

  6. Q: Can CD74HC85NSR handle both active-high and active-low inputs? A: No, CD74HC85NSR only supports active-high inputs.

  7. Q: What is the propagation delay of CD74HC85NSR? A: The propagation delay of CD74HC85NSR is typically around 11 ns.

  8. Q: Is CD74HC85NSR compatible with other logic families? A: Yes, CD74HC85NSR is compatible with most TTL (Transistor-Transistor Logic) and CMOS logic families.

  9. Q: Can CD74HC85NSR be used in high-temperature environments? A: CD74HC85NSR has a maximum operating temperature of 125°C, making it suitable for most applications.

  10. Q: Does CD74HC85NSR have any built-in protection features? A: CD74HC85NSR includes built-in ESD (Electrostatic Discharge) protection to prevent damage from static electricity.

Please note that the answers provided here are general and may vary depending on the specific datasheet and manufacturer's specifications of CD74HC85NSR.