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SN74LS374DWR
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SN74LS374DWR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Flip-Flop
  • Characteristics: High-speed, low-power consumption
  • Package: SOIC-20 (Small Outline Integrated Circuit), Wide Body
  • Essence: D-type transparent latch with 3-state outputs
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Input Voltage: 0V to VCC
  • Output Voltage: 0V to VCC
  • Operating Temperature: -40°C to +85°C
  • Propagation Delay Time: 15ns (typical)
  • Output Current: ±8mA

Detailed Pin Configuration

The SN74LS374DWR has a total of 20 pins arranged as follows:

  1. GND (Ground)
  2. D0 (Data Input 0)
  3. D1 (Data Input 1)
  4. D2 (Data Input 2)
  5. D3 (Data Input 3)
  6. D4 (Data Input 4)
  7. D5 (Data Input 5)
  8. D6 (Data Input 6)
  9. D7 (Data Input 7)
  10. CLK (Clock Input)
  11. OE (Output Enable)
  12. Q0 (Output 0)
  13. Q1 (Output 1)
  14. Q2 (Output 2)
  15. Q3 (Output 3)
  16. Q4 (Output 4)
  17. Q5 (Output 5)
  18. Q6 (Output 6)
  19. Q7 (Output 7)
  20. VCC (Power Supply)

Functional Features

The SN74LS374DWR is a D-type transparent latch with 3-state outputs. It can store and transfer data based on the clock input signal. The latch remains transparent when the clock is high, allowing the data inputs to propagate to the outputs. When the clock transitions from high to low, the latch becomes opaque, holding the last input values at the outputs. The 3-state outputs provide flexibility by allowing multiple devices to share a common bus.

Advantages and Disadvantages

Advantages: - High-speed operation - Low-power consumption - 3-state outputs for bus sharing

Disadvantages: - Limited output current capacity - Requires an external clock signal

Working Principles

The SN74LS374DWR operates based on the principles of digital logic. When the clock input is high, the latch is transparent, and the data inputs are transferred to the outputs. As the clock transitions from high to low, the latch becomes opaque, holding the data values at the outputs until the next clock cycle. The output enable (OE) pin allows the outputs to be disabled when necessary.

Detailed Application Field Plans

The SN74LS374DWR is commonly used in various applications, including:

  1. Microprocessor systems
  2. Data storage systems
  3. Communication equipment
  4. Industrial control systems
  5. Automotive electronics

Detailed and Complete Alternative Models

  1. SN74LS373 - Octal D-type transparent latch with 3-state outputs
  2. SN74HC374 - Octal edge-triggered D-type flip-flop with 3-state outputs
  3. SN74F374 - Octal D-type flip-flop with 3-state outputs

These alternative models offer similar functionality and can be used as replacements for the SN74LS374DWR in different applications.

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技術ソリューションにおける SN74LS374DWR の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of SN74LS374DWR:

  1. Q: What is SN74LS374DWR? A: SN74LS374DWR is a type of integrated circuit (IC) commonly used as an octal D-type flip-flop with tri-state outputs.

  2. Q: What is the purpose of SN74LS374DWR? A: SN74LS374DWR is used for storing and transferring data in digital systems, particularly in applications where multiple inputs and outputs are required.

  3. Q: How many flip-flops are there in SN74LS374DWR? A: SN74LS374DWR consists of eight individual D-type flip-flops, making it suitable for handling multiple bits of data simultaneously.

  4. Q: What is the maximum operating frequency of SN74LS374DWR? A: The maximum operating frequency of SN74LS374DWR is typically around 25 MHz, but it can vary depending on the specific conditions and setup.

  5. Q: Can SN74LS374DWR be used in both 5V and 3.3V systems? A: Yes, SN74LS374DWR is compatible with both 5V and 3.3V systems, making it versatile for various digital applications.

  6. Q: Does SN74LS374DWR have tri-state outputs? A: Yes, SN74LS374DWR has tri-state outputs, which means that the outputs can be actively driven high or low, or they can be in a high-impedance state.

  7. Q: What is the power supply voltage range for SN74LS374DWR? A: SN74LS374DWR operates within a power supply voltage range of 4.75V to 5.25V.

  8. Q: Can SN74LS374DWR be cascaded to increase the number of flip-flops? A: Yes, SN74LS374DWR can be cascaded by connecting the outputs of one IC to the inputs of another, allowing for expansion of the number of flip-flops.

  9. Q: What is the typical propagation delay of SN74LS374DWR? A: The typical propagation delay of SN74LS374DWR is around 15 ns, but it can vary depending on the specific conditions and setup.

  10. Q: Are there any special considerations for using SN74LS374DWR in high-speed applications? A: Yes, in high-speed applications, it is important to consider signal integrity, proper decoupling, and minimizing trace lengths to ensure reliable operation of SN74LS374DWR.

Please note that these answers are general and may vary depending on the specific datasheet and application requirements of SN74LS374DWR.