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SN74LS166AD
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SN74LS166AD

Product Overview

Category

SN74LS166AD belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a parallel-in, serial-out shift register.

Characteristics

  • 8-bit shift register with parallel input and serial output
  • TTL (Transistor-Transistor Logic) compatible
  • Low power consumption
  • High-speed operation

Package

SN74LS166AD is available in a 16-pin dual in-line package (DIP).

Essence

The essence of SN74LS166AD lies in its ability to convert parallel data into serial data for efficient transmission.

Packaging/Quantity

SN74LS166AD is typically packaged in tubes or reels, with quantities varying based on customer requirements.

Specifications

  • Supply voltage: 4.75V to 5.25V
  • Operating temperature range: -40°C to +85°C
  • Input voltage high level (VIH): 2.0V min
  • Input voltage low level (VIL): 0.8V max
  • Output voltage high level (VOH): 2.7V min
  • Output voltage low level (VOL): 0.5V max
  • Maximum clock frequency: 30 MHz

Detailed Pin Configuration

  1. SER (Serial Data Input)
  2. CLK (Clock Input)
  3. P0-P7 (Parallel Data Inputs)
  4. Q7 (Serial Data Output)
  5. GND (Ground)
  6. Q6 (Serial Data Output)
  7. Q5 (Serial Data Output)
  8. Q4 (Serial Data Output)
  9. Q3 (Serial Data Output)
  10. Q2 (Serial Data Output)
  11. Q1 (Serial Data Output)
  12. Q0 (Serial Data Output)
  13. MR (Master Reset)
  14. QA (Serial Data Output)
  15. QB (Serial Data Output)
  16. VCC (Supply Voltage)

Functional Features

  • Parallel data is loaded into the shift register on the rising edge of the clock signal.
  • The parallel data can be serially shifted out through the serial output pin.
  • The master reset (MR) pin resets the shift register to its initial state.
  • The SN74LS166AD operates in a synchronous mode, where data is transferred on each clock pulse.

Advantages and Disadvantages

Advantages

  • High-speed operation allows for efficient data transfer.
  • Low power consumption makes it suitable for battery-powered devices.
  • TTL compatibility ensures easy integration with other logic circuits.
  • Compact package size enables space-saving designs.

Disadvantages

  • Limited number of parallel inputs (8 bits).
  • Requires an external clock signal for proper operation.

Working Principles

SN74LS166AD functions as a parallel-in, serial-out shift register. When the clock signal rises, the parallel data inputs are loaded into the shift register. Subsequently, the data can be serially shifted out through the serial output pin. The master reset pin resets the shift register to its initial state.

Detailed Application Field Plans

SN74LS166AD finds applications in various fields, including: 1. Data communication systems 2. Serial-to-parallel data conversion 3. Industrial automation 4. Control systems 5. Robotics 6. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that serve similar purposes to SN74LS166AD include: - 74HC166: 8-bit parallel-in, serial-out shift register - CD4021B: 8-stage static shift register - SN74HC595: 8-bit serial-in, serial-out shift register with output latches

These alternatives offer different features and specifications, allowing users to choose the most suitable option for their specific requirements.

Word count: 511 words

10个与SN74LS166AD在技术解决方案中的应用相关的常见问题及解答

Sure! Here are 10 common questions and answers related to the application of SN74LS166AD:

  1. Q: What is SN74LS166AD? A: SN74LS166AD is a 8-bit parallel-in/serial-out shift register IC, commonly used in digital circuits for data storage and transfer.

  2. Q: What is the operating voltage range of SN74LS166AD? A: The operating voltage range of SN74LS166AD is typically between 4.75V and 5.25V.

  3. Q: How many inputs does SN74LS166AD have? A: SN74LS166AD has 8 parallel inputs (A-H) and 2 control inputs (CLK and CLR).

  4. Q: What is the purpose of the CLK input in SN74LS166AD? A: The CLK input is used to synchronize the shifting of data through the register. Each rising edge of the CLK signal shifts the data by one position.

  5. Q: How does the CLR input work in SN74LS166AD? A: The CLR input is an active-low clear input. When CLR is held low, it resets the register, clearing all the stored data.

  6. Q: Can SN74LS166AD be cascaded to increase the number of inputs? A: Yes, multiple SN74LS166AD ICs can be cascaded together to increase the number of inputs. The serial output of one IC can be connected to the parallel input of the next IC.

  7. Q: What is the maximum clock frequency supported by SN74LS166AD? A: SN74LS166AD can typically operate at clock frequencies up to 25 MHz.

  8. Q: What is the typical power consumption of SN74LS166AD? A: The typical power consumption of SN74LS166AD is around 10 mW.

  9. Q: Can SN74LS166AD be used in both synchronous and asynchronous applications? A: Yes, SN74LS166AD can be used in both synchronous and asynchronous applications, depending on the requirements of the circuit.

  10. Q: What are some common applications of SN74LS166AD? A: SN74LS166AD is commonly used in applications such as data acquisition systems, serial-to-parallel conversion, parallel data transfer, and shift register-based control circuits.

Please note that the answers provided here are general and may vary based on specific datasheet specifications and application requirements.