Texas Instruments
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SN74LS165AD
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SN74LS165AD

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Shift Register
  • Characteristics: Serial-in, Parallel-out (SIPO) shift register
  • Package: 16-pin DIP (Dual In-line Package)
  • Essence: Converts serial data input into parallel output
  • Packaging/Quantity: Available in tubes of 25 units or reels of 2,000 units

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Operating Temperature Range: -40°C to +85°C
  • Input Clock Frequency: Up to 33 MHz
  • Data Transfer Rate: 8-bit parallel output at the rising edge of the clock signal
  • Output Drive Capability: 10 LSTTL Loads
  • Power Dissipation: 500mW (max)

Detailed Pin Configuration

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

Functional Features

  • Serial-to-parallel conversion
  • Parallel outputs for each bit
  • Shift and load control inputs
  • Master reset functionality
  • High-speed operation up to 33 MHz
  • Compatible with various logic families

Advantages and Disadvantages

Advantages

  • Easy integration into digital systems
  • Compact size and low power consumption
  • High-speed data transfer
  • Versatile compatibility with different logic families

Disadvantages

  • Limited output drive capability
  • Requires external clock signal for operation
  • Not suitable for applications requiring large data storage

Working Principles

The SN74LS165AD is a serial-in, parallel-out shift register. It receives serial data through the SER pin and shifts it into its internal registers on each rising edge of the CLK input. The SH/LD input controls whether the data is shifted or loaded into the parallel outputs. The MR input allows resetting the shift register to its initial state.

Detailed Application Field Plans

  • Data communication systems
  • Serial-to-parallel conversion in microcontrollers
  • Industrial automation and control systems
  • Digital displays and LED matrices
  • Input/output expansion in embedded systems

Detailed and Complete Alternative Models

  1. CD4015BE: Dual 4-bit Static Shift Register
  2. 74HC595: 8-bit Serial-In, Parallel-Out Shift Register
  3. CD4021BE: 8-bit Parallel-In, Serial-Out Shift Register
  4. SN74HC164N: 8-bit Serial-In, Parallel-Out Shift Register
  5. CD4094BE: 8-bit Serial-In, Parallel-Out Shift Register with Latch

(Note: These are just a few examples; there are several alternative models available in the market.)

This entry provides an overview of the SN74LS165AD shift register, including its basic information, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.

قم بإدراج 10 أسئلة وإجابات شائعة تتعلق بتطبيق SN74LS165AD في الحلول التقنية

Sure! Here are 10 common questions and answers related to the application of SN74LS165AD:

  1. Q: What is SN74LS165AD? A: SN74LS165AD is a popular 8-bit parallel-in/serial-out shift register IC (integrated circuit) commonly used in technical solutions.

  2. Q: How does SN74LS165AD work? A: It takes in parallel data from 8 input pins and shifts it out serially, one bit at a time, based on clock pulses.

  3. Q: What is the maximum clock frequency for SN74LS165AD? A: The maximum clock frequency for SN74LS165AD is typically around 25 MHz.

  4. Q: Can I daisy-chain multiple SN74LS165AD ICs together? A: Yes, you can daisy-chain multiple SN74LS165AD ICs to expand the number of inputs by connecting the serial output of one IC to the serial input of another.

  5. Q: What is the power supply voltage range for SN74LS165AD? A: The recommended power supply voltage range for SN74LS165AD is usually between 4.75V and 5.25V.

  6. Q: How much current does SN74LS165AD consume? A: SN74LS165AD typically consumes around 4-8 mA of current during operation.

  7. Q: Can SN74LS165AD handle both TTL and CMOS logic levels? A: Yes, SN74LS165AD is compatible with both TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) logic levels.

  8. Q: What are some common applications of SN74LS165AD? A: SN74LS165AD is commonly used in applications such as data acquisition, parallel-to-serial conversion, input expansion, and shift register-based control systems.

  9. Q: Does SN74LS165AD have any built-in debounce circuitry? A: No, SN74LS165AD does not have built-in debounce circuitry. External debouncing may be required for noisy input signals.

  10. Q: Can I use SN74LS165AD with microcontrollers or Arduino boards? A: Yes, SN74LS165AD can be easily interfaced with microcontrollers or Arduino boards using digital input/output pins to read the serial output data.