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SN74LS378DR
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SN74LS378DR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Data Storage
  • Characteristics: Octal D-Type Flip-Flop with Enable
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: High-speed, low-power consumption flip-flop
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 4.75V to 5.25V
  • Input Voltage Range: 0V to VCC
  • Operating Temperature Range: -40°C to +85°C
  • Output Current: ±8mA
  • Propagation Delay Time: 15ns (max)
  • Power Dissipation: 500mW (max)

Detailed Pin Configuration

The SN74LS378DR has a total of 20 pins. The pin configuration is as follows:

  1. CLR (Clear) - Active LOW clear input
  2. D0-D7 (Data Inputs) - Eight data inputs
  3. CP (Clock Pulse) - Clock input
  4. GND (Ground) - Ground reference voltage
  5. Q0-Q7 (Flip-Flop Outputs) - Eight flip-flop outputs
  6. OE (Output Enable) - Active LOW output enable input
  7. VCC (Supply Voltage) - Positive supply voltage

Functional Features

  • Octal D-Type Flip-Flop: The SN74LS378DR consists of eight individual D-type flip-flops, allowing for storage and transfer of data.
  • Enable Functionality: The chip includes an active LOW output enable (OE) input, which can be used to disable the outputs without affecting the state of the flip-flops.
  • Clear Function: The active LOW clear (CLR) input allows for clearing all the flip-flops simultaneously.
  • High-Speed Operation: The SN74LS378DR is designed for high-speed applications, with a maximum propagation delay time of 15ns.

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick data storage and transfer. - Low-power consumption makes it suitable for battery-powered devices. - Compact SOIC package saves board space. - Enable and clear functions provide flexibility in controlling the outputs.

Disadvantages: - Limited to octal (eight) flip-flops, may not be suitable for applications requiring more storage elements. - Requires external clock signal for proper operation.

Working Principles

The SN74LS378DR operates based on the principles of D-type flip-flops. Each flip-flop stores a single bit of data and transfers it to the output upon receiving a clock pulse. The enable and clear inputs control the functionality of the chip, allowing for data storage, transfer, and clearing operations.

Detailed Application Field Plans

The SN74LS378DR can be used in various applications, including:

  1. Register Systems: It can be utilized as a part of register systems to store and transfer data within a digital circuit.
  2. Data Processing Units: The chip can be integrated into data processing units to facilitate data storage and manipulation.
  3. Communication Systems: It can be employed in communication systems for buffering and synchronization purposes.
  4. Control Systems: The SN74LS378DR can be utilized in control systems to store and update control signals.

Detailed and Complete Alternative Models

  1. SN74LS374: Octal D-Type Flip-Flop with 3-State Outputs
  2. SN74LS175: Quad D-Type Flip-Flop with Clear
  3. SN74LS279: Quad S-R Latch with 3-State Outputs
  4. SN74LS273: Octal D-Type Flip-Flop with Clear

These alternative models offer similar functionality and can be considered as substitutes for the SN74LS378DR in various applications.

Word count: 411 words

技術ソリューションにおける SN74LS378DR 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 SN74LS378DR:

  1. Q: What is SN74LS378DR? A: SN74LS378DR is a specific type of integrated circuit (IC) commonly used in technical solutions for data storage and retrieval.

  2. Q: What is the function of SN74LS378DR? A: SN74LS378DR is a 4-bit latch with enable, which means it can store and hold 4 bits of data until instructed to release them.

  3. Q: How does SN74LS378DR work? A: SN74LS378DR works by using flip-flops to store the input data and an enable pin to control when the stored data is released.

  4. Q: What are the typical applications of SN74LS378DR? A: SN74LS378DR is commonly used in applications such as memory systems, registers, counters, and other digital logic circuits that require temporary data storage.

  5. Q: What is the voltage range supported by SN74LS378DR? A: SN74LS378DR supports a voltage range of 4.75V to 5.25V.

  6. Q: What is the maximum clock frequency supported by SN74LS378DR? A: SN74LS378DR can operate at a maximum clock frequency of 33 MHz.

  7. Q: How many inputs and outputs does SN74LS378DR have? A: SN74LS378DR has 4 data inputs (D0-D3), 1 enable input (G), and 4 outputs (Q0-Q3).

  8. Q: Can SN74LS378DR be cascaded to increase the number of bits stored? A: Yes, SN74LS378DR can be cascaded to increase the number of bits stored by connecting the enable output of one IC to the enable input of another.

  9. Q: What is the power consumption of SN74LS378DR? A: The power consumption of SN74LS378DR is typically around 10mW.

  10. Q: Is SN74LS378DR compatible with other logic families? A: Yes, SN74LS378DR is compatible with other TTL (Transistor-Transistor Logic) logic families, but it may require level-shifting for compatibility with CMOS (Complementary Metal-Oxide-Semiconductor) logic families.

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