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74HCT165PW,112
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74HCT165PW,112

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Shift Register
  • Characteristics: High-speed operation, low power consumption
  • Package: TSSOP (Thin Shrink Small Outline Package)
  • Essence: Serial-in, parallel-out shift register
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Number of Bits: 8
  • Logic Family: HCT
  • Supply Voltage: 2V to 6V
  • Input Voltage Levels: CMOS/TTL compatible
  • Output Voltage Levels: CMOS/TTL compatible
  • Maximum Clock Frequency: 25 MHz
  • Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

  1. SER (Serial Data Input)
  2. QH' (Serial Data Output)
  3. CP (Clock Pulse Input)
  4. MR (Master Reset Input)
  5. SH/LD (Shift/Load Input)
  6. QA-QH (Parallel Data Outputs)
  7. GND (Ground)
  8. VCC (Supply Voltage)

Functional Features

  • Serial-in, parallel-out shifting of data
  • Asynchronous master reset for clearing the register
  • Shift/Load input for selecting between shift and parallel load modes
  • Compatible with both CMOS and TTL logic levels
  • High-speed operation allows for efficient data transfer
  • Low power consumption makes it suitable for battery-powered devices

Advantages and Disadvantages

Advantages: - Versatile and widely used in various applications - Easy to interface with other digital circuits - Compact package size saves board space - Wide operating temperature range allows for use in extreme conditions

Disadvantages: - Limited number of bits (8 in this case) - Requires external clock signal for proper operation - Not suitable for high-frequency applications

Working Principles

The 74HCT165PW,112 is a serial-in, parallel-out shift register. It receives data serially through the SER input and shifts it into the register on each rising edge of the CP (Clock Pulse) input. The SH/LD (Shift/Load) input determines whether the data is shifted or loaded in parallel. When SH/LD is low, the data is shifted, and when it is high, the data is loaded in parallel.

The MR (Master Reset) input asynchronously clears the register to its initial state. The output data appears on the QA-QH pins in parallel format. QH' is the serial data output, which can be connected to the SER input of another shift register for cascading multiple devices.

Detailed Application Field Plans

  • Serial data transmission and reception
  • Data storage and retrieval
  • Digital signal processing
  • LED matrix control
  • Keyboard scanning
  • Industrial automation
  • Communication systems

Detailed and Complete Alternative Models

  • 74HC165: Similar functionality but operates at a higher voltage range (2V to 6V)
  • CD74HC165E: Equivalent IC from Texas Instruments with similar specifications
  • SN74HC165N: Another alternative from Texas Instruments with comparable features

(Note: This list is not exhaustive and there may be other alternative models available in the market.)

Word count: 410 words

Перелічіть 10 типових запитань і відповідей, пов’язаних із застосуванням 74HCT165PW,112 у технічних рішеннях

Sure! Here are 10 common questions and answers related to the application of 74HCT165PW,112 in technical solutions:

  1. Q: What is the function of the 74HCT165PW,112? A: The 74HCT165PW,112 is an 8-bit parallel-in/serial-out shift register IC used for data storage and transfer.

  2. Q: What is the operating voltage range of the 74HCT165PW,112? A: The 74HCT165PW,112 operates within a voltage range of 4.5V to 5.5V.

  3. Q: How many inputs does the 74HCT165PW,112 have? A: The 74HCT165PW,112 has 8 parallel inputs (D0-D7) and one serial input (DS).

  4. Q: Can the 74HCT165PW,112 be cascaded to increase the number of inputs? A: Yes, multiple 74HCT165PW,112 ICs can be cascaded together to increase the number of inputs.

  5. Q: What is the maximum clock frequency supported by the 74HCT165PW,112? A: The 74HCT165PW,112 can operate at a maximum clock frequency of 25 MHz.

  6. Q: How does the 74HCT165PW,112 handle data transfer? A: The 74HCT165PW,112 transfers data in a serial manner from the parallel inputs to the serial output (Q7).

  7. Q: Does the 74HCT165PW,112 have any output enable feature? A: Yes, the 74HCT165PW,112 has an active-low output enable pin (OE) that can be used to enable or disable the output.

  8. Q: Can the 74HCT165PW,112 be used for both input and output operations? A: No, the 74HCT165PW,112 is primarily designed for input operations. For output operations, a different IC like a shift register with parallel output should be used.

  9. Q: What is the power supply current consumption of the 74HCT165PW,112? A: The power supply current consumption of the 74HCT165PW,112 is typically around 4 mA.

  10. Q: Are there any specific precautions to consider when using the 74HCT165PW,112? A: It is important to ensure that the voltage levels applied to the inputs do not exceed the specified limits, and the clock signal meets the timing requirements mentioned in the datasheet.

Please note that these answers are general and may vary depending on the specific application and implementation of the 74HCT165PW,112 in a technical solution.