Texas Instruments
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SN74HC165DR
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SN74HC165DR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Shift Register
  • Characteristics: Serial-In, Parallel-Out; 8-bit; High-Speed; CMOS Technology
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: The SN74HC165DR is a high-speed 8-bit shift register that allows serial input and parallel output. It is commonly used in digital systems for data storage and transfer.
  • Packaging/Quantity: The SN74HC165DR is available in tape and reel packaging with a quantity of 2500 units per reel.

Specifications

  • Supply Voltage: 2V to 6V
  • Operating Temperature Range: -40°C to 85°C
  • Input Voltage Levels: High: 2V to VCC, Low: 0V to 0.8V
  • Output Voltage Levels: High: VCC-0.5V, Low: 0.5V
  • Maximum Clock Frequency: 100 MHz
  • Maximum Data Rate: 25 Mbps

Pin Configuration

The SN74HC165DR has a total of 16 pins. The detailed pin configuration is as follows:

  1. SER (Serial Input)
  2. QA (Parallel Output A)
  3. QB (Parallel Output B)
  4. QC (Parallel Output C)
  5. QD (Parallel Output D)
  6. QE (Parallel Output E)
  7. QF (Parallel Output F)
  8. QG (Parallel Output G)
  9. QH (Parallel Output H)
  10. CLK (Clock Input)
  11. SH/LD (Shift/Load Input)
  12. OE (Output Enable Input)
  13. GND (Ground)
  14. QH' (Serial Output)
  15. DS (Serial Data Input)
  16. VCC (Supply Voltage)

Functional Features

  • Serial-in, parallel-out shift register operation
  • High-speed data transfer with a maximum clock frequency of 100 MHz
  • CMOS technology for low power consumption
  • Output enable control for easy interfacing with other devices
  • Shift/load input for flexible data loading options

Advantages and Disadvantages

Advantages

  • High-speed operation allows for efficient data transfer in digital systems.
  • Serial-in, parallel-out functionality provides flexibility in data storage and retrieval.
  • CMOS technology ensures low power consumption, making it suitable for battery-powered applications.
  • Output enable control simplifies interfacing with other devices.

Disadvantages

  • Limited to 8-bit data storage and transfer.
  • Requires an external clock signal for proper operation.
  • May not be suitable for applications requiring higher data rates.

Working Principles

The SN74HC165DR operates as a serial-in, parallel-out shift register. It receives data serially through the SER pin and shifts it into internal storage registers on each rising edge of the CLK (clock) input. The SH/LD (shift/load) input determines whether the incoming data is shifted or loaded into the storage registers.

When the SH/LD input is low, the data is shifted through the registers. When the SH/LD input is high, the data is loaded into the registers, and subsequent data is ignored until the SH/LD input returns to low.

The parallel output pins (QA to QH) provide access to the stored data in parallel form. The QH' pin outputs the serial data that was last shifted into the register.

Detailed Application Field Plans

The SN74HC165DR can be used in various applications, including:

  1. Data acquisition systems
  2. Industrial automation
  3. Communication equipment
  4. Digital displays
  5. Control systems
  6. Robotics
  7. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the SN74HC165DR include:

  1. CD74HC165E
  2. 74HCT165N
  3. MC74HC165AN
  4. SN74LS165N
  5. CD40165BE

These alternative models offer similar functionality and can be used as replacements for the SN74HC165DR in various applications.

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Orodhesha maswali na majibu 10 ya kawaida yanayohusiana na utumiaji wa SN74HC165DR katika suluhu za kiufundi

Sure! Here are 10 common questions and answers related to the application of SN74HC165DR:

  1. Q: What is SN74HC165DR? A: SN74HC165DR is a popular shift register integrated circuit (IC) that can be used for parallel-to-serial data conversion.

  2. Q: What is the purpose of using SN74HC165DR in technical solutions? A: SN74HC165DR is commonly used to expand the number of input pins available on microcontrollers or other digital devices.

  3. Q: How many input pins does SN74HC165DR have? A: SN74HC165DR has 8 input pins, which can be expanded by cascading multiple ICs together.

  4. Q: How does SN74HC165DR work? A: SN74HC165DR works by shifting the state of its input pins into an internal shift register, allowing the data to be read serially.

  5. Q: Can SN74HC165DR be used with both 3.3V and 5V systems? A: Yes, SN74HC165DR is compatible with both 3.3V and 5V systems, making it versatile for various applications.

  6. Q: How do I connect SN74HC165DR to a microcontroller? A: SN74HC165DR requires connections to power (VCC and GND), clock (CLK), data (SER), and output enable (OE) pins to interface with a microcontroller.

  7. Q: Can SN74HC165DR be used for both input and output expansion? A: No, SN74HC165DR is specifically designed for input expansion only. For output expansion, you would need a different IC.

  8. Q: What is the maximum clock frequency supported by SN74HC165DR? A: SN74HC165DR can operate at a maximum clock frequency of 100 MHz, making it suitable for high-speed applications.

  9. Q: Can I daisy-chain multiple SN74HC165DR ICs together? A: Yes, you can cascade multiple SN74HC165DR ICs to expand the number of input pins even further.

  10. Q: Are there any application examples where SN74HC165DR is commonly used? A: Yes, SN74HC165DR is often used in projects involving keypad scanning, button matrix interfacing, and general-purpose input expansion.

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