Texas Instruments
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SN74LS279AD
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SN74LS279AD

Product Overview

Category

SN74LS279AD belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital electronics for various applications such as data storage, counters, and arithmetic operations.

Characteristics

  • Low power consumption
  • High-speed operation
  • Wide operating voltage range
  • Compatibility with TTL logic levels

Package

SN74LS279AD is available in a 16-pin dual in-line package (DIP), which provides easy integration into electronic circuits.

Essence

The essence of SN74LS279AD lies in its ability to perform reliable and efficient data storage and manipulation tasks in digital systems.

Packaging/Quantity

SN74LS279AD is typically packaged in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Operating Temperature Range: -40°C to +85°C
  • Logic Family: LS-TTL
  • Number of Pins: 16
  • Maximum Clock Frequency: 33 MHz

Detailed Pin Configuration

  1. CLR (Clear)
  2. D0 (Data Input 0)
  3. D1 (Data Input 1)
  4. D2 (Data Input 2)
  5. D3 (Data Input 3)
  6. CLK (Clock Input)
  7. GND (Ground)
  8. Q0 (Output 0)
  9. Q1 (Output 1)
  10. Q2 (Output 2)
  11. Q3 (Output 3)
  12. VCC (Power Supply)
  13. NC (No Connection)
  14. NC (No Connection)
  15. NC (No Connection)
  16. NC (No Connection)

Functional Features

  • Data storage with synchronous parallel loading
  • Synchronous counting operation
  • Asynchronous clear function
  • High-speed clock input

Advantages and Disadvantages

Advantages

  • Low power consumption makes it suitable for battery-powered devices.
  • High-speed operation enables efficient data processing.
  • Wide operating voltage range allows compatibility with various systems.
  • LS-TTL logic family ensures reliable performance.

Disadvantages

  • Limited number of outputs (4) may restrict certain applications requiring more outputs.
  • Not suitable for high-frequency applications due to the maximum clock frequency limitation.

Working Principles

SN74LS279AD operates based on synchronous parallel loading and synchronous counting principles. The data inputs (D0-D3) are loaded into the internal registers when the clock input (CLK) transitions from low to high. The outputs (Q0-Q3) reflect the current count value, which increments with each clock pulse. The clear input (CLR) asynchronously resets the counter to its initial state.

Detailed Application Field Plans

SN74LS279AD finds applications in various digital systems, including but not limited to: - Digital counters - Frequency dividers - Arithmetic circuits - Data storage units - Industrial control systems

Detailed and Complete Alternative Models

  1. SN74LS279AN
  2. SN74LS279AJ
  3. SN74LS279AFN
  4. SN74LS279ADR
  5. SN74LS279APWR

These alternative models offer similar functionality and characteristics to SN74LS279AD, providing flexibility in choosing the most suitable option for specific applications.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de SN74LS279AD en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of SN74LS279AD:

  1. Q: What is SN74LS279AD? A: SN74LS279AD is a quad set-reset latch with complementary outputs, commonly used in digital logic circuits.

  2. Q: What is the operating voltage range for SN74LS279AD? A: The operating voltage range for SN74LS279AD is typically between 4.75V and 5.25V.

  3. Q: What is the maximum clock frequency supported by SN74LS279AD? A: SN74LS279AD can support clock frequencies up to 33 MHz.

  4. Q: How many latch circuits are there in SN74LS279AD? A: SN74LS279AD consists of four independent latch circuits.

  5. Q: What is the purpose of the set and reset inputs in SN74LS279AD? A: The set and reset inputs are used to control the state of the latch outputs. Setting the set input high sets the output to logic high, while setting the reset input high resets the output to logic low.

  6. Q: Can SN74LS279AD be used as a flip-flop? A: No, SN74LS279AD cannot be used as a flip-flop. It is specifically designed as a set-reset latch.

  7. Q: What is the output drive capability of SN74LS279AD? A: SN74LS279AD has a typical output drive capability of 8 mA.

  8. Q: Can SN74LS279AD be cascaded to create larger latch circuits? A: Yes, SN74LS279AD can be cascaded to create larger latch circuits by connecting the outputs of one latch to the inputs of another.

  9. Q: What is the propagation delay of SN74LS279AD? A: The propagation delay of SN74LS279AD is typically around 15 ns.

  10. Q: What are some typical applications of SN74LS279AD? A: SN74LS279AD can be used in various applications such as address decoding, data storage, and control circuitry in microprocessors and digital systems.

Please note that these answers are general and may vary depending on specific use cases and datasheet specifications.