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CD74HC165M
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CD74HC165M

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Shift Register
  • Characteristics: High-Speed, Parallel-In Serial-Out (PISO) Shift Register
  • Package: 16-Pin SOIC (Small Outline Integrated Circuit)
  • Essence: Serial-to-Parallel Data Conversion
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: 2V to 6V
  • Input Voltage: 0V to Vcc
  • Output Voltage: 0V to Vcc
  • Operating Temperature: -40°C to +85°C
  • Clock Frequency: Up to 25 MHz
  • Number of Stages: 8

Pin Configuration

The CD74HC165M has a total of 16 pins. The pin configuration is as follows:

  1. SER (Serial Data Input)
  2. QH' (Serial Output)
  3. CLK (Clock Input)
  4. GND (Ground)
  5. D7 (Parallel Data Input)
  6. D6 (Parallel Data Input)
  7. D5 (Parallel Data Input)
  8. D4 (Parallel Data Input)
  9. D3 (Parallel Data Input)
  10. D2 (Parallel Data Input)
  11. D1 (Parallel Data Input)
  12. D0 (Parallel Data Input)
  13. MR (Master Reset)
  14. SH/LD (Shift/Load Input)
  15. QA (Parallel Data Output)
  16. Vcc (Supply Voltage)

Functional Features

The CD74HC165M is a high-speed parallel-in serial-out (PISO) shift register IC. It allows for the conversion of serial data into parallel format. The key features of this IC include:

  • Serial-to-parallel data conversion
  • 8-bit parallel data input
  • Single clock input for shifting data
  • Master reset functionality
  • Shift/load control input

Advantages and Disadvantages

Advantages

  • High-speed operation
  • Compact package size
  • Easy integration into electronic circuits
  • Low power consumption
  • Wide operating voltage range

Disadvantages

  • Limited number of stages (8 bits)
  • Requires an external clock signal
  • Lack of built-in error detection or correction mechanisms

Working Principles

The CD74HC165M operates based on the principle of serial-to-parallel data conversion. It receives a serial data stream through the SER pin and uses the CLK input to shift the data bits into its internal register. The SH/LD input controls whether the shifted data is loaded into the parallel output register or not. When the SH/LD input is low, the data is continuously shifted. When it is high, the data is loaded into the parallel output register.

Detailed Application Field Plans

The CD74HC165M can be used in various applications that require serial-to-parallel data conversion. Some potential application fields include:

  1. Data acquisition systems
  2. Industrial automation
  3. Communication equipment
  4. Digital displays
  5. LED matrix control
  6. Keypad scanning
  7. Sensor interfacing
  8. Robotics

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the CD74HC165M. Some popular alternatives include:

  1. SN74HC165N by Texas Instruments
  2. 74HC165 by NXP Semiconductors
  3. CD4015BE by Texas Instruments
  4. 74HCT165 by Nexperia
  5. MC74HC165AN by ON Semiconductor

These alternative models provide comparable features and can be used as substitutes depending on specific requirements.

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Wymień 10 typowych pytań i odpowiedzi związanych z zastosowaniem CD74HC165M w rozwiązaniach technicznych

Sure! Here are 10 common questions and answers related to the application of CD74HC165M:

  1. Q: What is CD74HC165M? A: CD74HC165M is a 8-bit parallel-in/serial-out shift register commonly used in technical solutions.

  2. Q: What is the purpose of CD74HC165M? A: CD74HC165M is used to expand the number of input pins available on microcontrollers or other digital devices.

  3. Q: How many input pins can CD74HC165M handle? A: CD74HC165M can handle up to 8 input pins.

  4. Q: How does CD74HC165M work? A: CD74HC165M takes parallel inputs and converts them into a serial output, allowing multiple inputs to be read using only a few microcontroller pins.

  5. Q: Can CD74HC165M be cascaded to handle more than 8 inputs? A: Yes, CD74HC165M can be cascaded together to handle larger numbers of inputs by connecting the serial output of one chip to the serial input of another.

  6. Q: What is the maximum clock frequency for CD74HC165M? A: The maximum clock frequency for CD74HC165M is typically around 25 MHz.

  7. Q: What voltage levels does CD74HC165M support? A: CD74HC165M supports a wide range of voltage levels, typically from 2V to 6V.

  8. Q: Does CD74HC165M have any built-in debouncing features? A: No, CD74HC165M does not have any built-in debouncing features. External debouncing may be required depending on the application.

  9. Q: Can CD74HC165M be used for both input and output operations? A: No, CD74HC165M is designed for input operations only. It cannot be used for output operations.

  10. Q: Are there any specific precautions to consider when using CD74HC165M? A: Yes, it is important to ensure that the voltage levels and clock frequency are within the specified limits. Additionally, proper decoupling capacitors should be used to minimize noise and ensure stable operation.

Please note that these answers are general in nature and may vary depending on the specific application and requirements.