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SN74ALS679NSRG4
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SN74ALS679NSRG4

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Logic Function
  • Characteristics: High-Speed, Low-Power, TTL-Compatible
  • Package: 16-pin SOIC (Small Outline Integrated Circuit)
  • Essence: The SN74ALS679NSRG4 is a 16-bit parallel-load shift register with an asynchronous reset. It is designed for high-speed digital applications and operates at TTL-compatible voltage levels.
  • Packaging/Quantity: Available in reels of 2500 units.

Specifications

  • Logic Family: ALS
  • Number of Bits: 16
  • Operating Voltage: 4.5V to 5.5V
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay: 10ns (typical)
  • Input/Output Compatibility: TTL-Compatible

Pin Configuration

The SN74ALS679NSRG4 has a 16-pin configuration as follows:

  1. GND (Ground)
  2. D0 (Data Input Bit 0)
  3. D1 (Data Input Bit 1)
  4. D2 (Data Input Bit 2)
  5. D3 (Data Input Bit 3)
  6. D4 (Data Input Bit 4)
  7. D5 (Data Input Bit 5)
  8. D6 (Data Input Bit 6)
  9. D7 (Data Input Bit 7)
  10. D8 (Data Input Bit 8)
  11. D9 (Data Input Bit 9)
  12. D10 (Data Input Bit 10)
  13. D11 (Data Input Bit 11)
  14. D12 (Data Input Bit 12)
  15. D13 (Data Input Bit 13)
  16. VCC (Positive Power Supply)

Functional Features

  • Parallel Load: The SN74ALS679NSRG4 allows parallel loading of data into the shift register.
  • Asynchronous Reset: It features an asynchronous reset input that clears the register to its initial state.
  • High-Speed Operation: Designed for high-speed digital applications, it offers a low propagation delay.
  • TTL-Compatible: The IC operates at TTL-compatible voltage levels, making it compatible with other TTL devices.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data processing. - Asynchronous reset allows easy initialization of the shift register. - TTL compatibility ensures seamless integration with other TTL devices.

Disadvantages: - Limited number of bits (16) may not be suitable for applications requiring larger data storage. - Requires external components for proper functioning in complex circuits.

Working Principles

The SN74ALS679NSRG4 is a parallel-load shift register that can store and shift 16 bits of data. It utilizes flip-flops to store each bit and a clock signal to control the shifting operation. The parallel load feature allows simultaneous loading of data into the register, while the asynchronous reset input clears the register to its initial state.

During operation, the data is shifted from one flip-flop to the next on each clock cycle. The shifted data can be outputted or further processed as required by the application. The TTL-compatible voltage levels ensure compatibility with other TTL devices, facilitating seamless integration into digital systems.

Detailed Application Field Plans

The SN74ALS679NSRG4 is commonly used in various digital applications, including but not limited to:

  1. Data Storage: The shift register can be used to store and retrieve data in microcontrollers, memory systems, and communication devices.
  2. Serial-to-Parallel Conversion: It can convert serial data streams into parallel data formats, enabling efficient data processing.
  3. Data Transmission: The shift register can be employed in serial data transmission systems to buffer and synchronize incoming data.
  4. Address Decoding: It can be utilized for address decoding in memory systems, allowing efficient access to specific memory locations.

Detailed and Complete Alternative Models

  1. SN74ALS677NSRG4: 16-bit parallel-load shift register with synchronous reset.
  2. SN74ALS678NSRG4: 16-bit parallel-load shift register with clock enable.
  3. SN74ALS680NSRG4: 16-bit parallel-load shift register with serial output.

These alternative models offer similar functionality with slight variations in features, providing flexibility for different application requirements.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan SN74ALS679NSRG4 dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of SN74ALS679NSRG4 in technical solutions:

  1. Q: What is SN74ALS679NSRG4? A: SN74ALS679NSRG4 is a specific type of integrated circuit (IC) commonly used in digital logic applications.

  2. Q: What is the function of SN74ALS679NSRG4? A: SN74ALS679NSRG4 is a 16-bit synchronous binary counter with parallel load capability, which means it can count up or down based on clock signals and has the ability to load data in parallel.

  3. Q: What are the typical voltage and current ratings for SN74ALS679NSRG4? A: The typical voltage rating for SN74ALS679NSRG4 is 5V, and the typical current rating is around 24mA.

  4. Q: Can SN74ALS679NSRG4 be used in both count-up and count-down applications? A: Yes, SN74ALS679NSRG4 can be used in both count-up and count-down applications by controlling the appropriate clock signals.

  5. Q: How many bits does SN74ALS679NSRG4 have? A: SN74ALS679NSRG4 is a 16-bit counter, meaning it can count up to 2^16 - 1 (65535) before rolling over.

  6. Q: Can SN74ALS679NSRG4 be cascaded to increase the counting range? A: Yes, multiple SN74ALS679NSRG4 ICs can be cascaded together to increase the counting range beyond 16 bits.

  7. Q: Does SN74ALS679NSRG4 have any built-in error detection or correction features? A: No, SN74ALS679NSRG4 does not have any built-in error detection or correction features. It is a basic counter IC.

  8. Q: What is the maximum clock frequency that SN74ALS679NSRG4 can handle? A: The maximum clock frequency for SN74ALS679NSRG4 is typically around 25 MHz, but it may vary depending on the specific operating conditions.

  9. Q: Can SN74ALS679NSRG4 be used in both synchronous and asynchronous applications? A: SN74ALS679NSRG4 is primarily designed for synchronous applications, where the count is synchronized with a clock signal. However, it can also be used in certain asynchronous applications with appropriate circuitry.

  10. Q: Are there any specific precautions to consider when using SN74ALS679NSRG4? A: It is important to ensure proper power supply decoupling and observe the recommended voltage and current ratings. Additionally, care should be taken to avoid exceeding the maximum clock frequency and operating temperature range specified in the datasheet.

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