Kuva saattaa olla esitys.
Katso tuotteen tekniset tiedot.
74LV74DB,118

74LV74DB,118

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Flip-Flop
  • Characteristics: Dual D-Type Positive-Edge-Triggered Flip-Flop
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Digital Logic IC
  • Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

  • Supply Voltage Range: 1.65V to 5.5V
  • High-Level Input Voltage: 2V (minimum), VCC (maximum)
  • Low-Level Input Voltage: GND (minimum), 0.8V (maximum)
  • High-Level Output Voltage: VCC - 0.6V (minimum), VCC (maximum)
  • Low-Level Output Voltage: GND (minimum), 0.1V (maximum)
  • Maximum Operating Frequency: 125 MHz
  • Propagation Delay Time: 9 ns (typical)

Detailed Pin Configuration

The 74LV74DB,118 IC has a total of 14 pins. The pin configuration is as follows:

  1. CLR (Clear) - Active LOW clear input
  2. D1 (Data Input 1) - Data input for the first flip-flop
  3. CP1 (Clock Pulse 1) - Clock input for the first flip-flop
  4. Q1 (Output 1) - Output of the first flip-flop
  5. Q̅1 (Complementary Output 1) - Complementary output of the first flip-flop
  6. GND (Ground) - Ground reference
  7. Q̅2 (Complementary Output 2) - Complementary output of the second flip-flop
  8. Q2 (Output 2) - Output of the second flip-flop
  9. CP2 (Clock Pulse 2) - Clock input for the second flip-flop
  10. D2 (Data Input 2) - Data input for the second flip-flop
  11. VCC (Positive Power Supply) - Positive power supply voltage
  12. PRE (Preset) - Active LOW preset input
  13. PR̅E (Complementary Preset) - Complementary active LOW preset input
  14. OE (Output Enable) - Active LOW output enable input

Functional Features

  • Dual D-Type Flip-Flop: The 74LV74DB,118 contains two independent D-type flip-flops in a single package.
  • Positive-Edge-Triggered: The flip-flops are triggered on the rising edge of the clock signal.
  • Clear and Preset Inputs: The IC provides clear and preset inputs to initialize the flip-flop outputs.
  • Output Enable: The output enable input allows the user to control the output state.

Advantages and Disadvantages

Advantages: - Compact Design: The dual flip-flop functionality in a single package saves board space. - Versatile: Can be used in various digital logic applications. - Wide Supply Voltage Range: Operates from 1.65V to 5.5V, making it compatible with different systems.

Disadvantages: - Limited Operating Frequency: The maximum operating frequency is 125 MHz, which may not be sufficient for high-speed applications. - Lack of Additional Features: The IC does not provide advanced features like asynchronous reset or clock enable inputs.

Working Principles

The 74LV74DB,118 is a positive-edge-triggered flip-flop. It stores data based on the rising edge of the clock signal. When the clock input (CP1 or CP2) transitions from LOW to HIGH, the data present at the respective D input (D1 or D2) is transferred to the corresponding Q output (Q1 or Q2). The outputs remain stable until the next rising edge of the clock.

The clear (CLR) and preset (PRE) inputs allow for initialization of the flip-flop outputs. When the CLR input is LOW, both Q outputs are forced to logic LOW. Conversely, when the PRE input is LOW, both Q outputs are forced to logic HIGH. The output enable (OE) input controls whether the outputs are active or in a high-impedance state.

Detailed Application Field Plans

The 74LV74DB,118 IC finds applications in various digital systems, including:

  1. Sequential Logic Circuits: Used as building blocks for designing counters, registers, and shift registers.
  2. Data Storage: Employed in memory elements to store data temporarily.
  3. Clock Synchronization: Facilitates synchronization of signals in digital systems.
  4. State Machines: Enables the implementation of finite state machines for control and sequencing purposes.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the 74LV74DB,118 IC include:

  1. SN74LV74A: Dual D-Type Positive-Edge-Triggered Flip

Luettele 10 yleistä kysymystä ja vastausta, jotka liittyvät 74LV74DB,118 :n soveltamiseen teknisissä ratkaisuissa

Sure! Here are 10 common questions and answers related to the application of 74LV74DB,118 in technical solutions:

  1. Q: What is the 74LV74DB,118? A: The 74LV74DB,118 is a dual D-type flip-flop integrated circuit (IC) that can store one bit of data.

  2. Q: What is the voltage range supported by the 74LV74DB,118? A: The 74LV74DB,118 supports a voltage range of 2.0V to 5.5V.

  3. Q: How many flip-flops are there in the 74LV74DB,118? A: The 74LV74DB,118 has two independent D-type flip-flops.

  4. Q: What is the maximum clock frequency supported by the 74LV74DB,118? A: The 74LV74DB,118 can operate at a maximum clock frequency of 125 MHz.

  5. Q: Can the 74LV74DB,118 be used for edge-triggered or level-triggered applications? A: Yes, the 74LV74DB,118 can be used for both edge-triggered and level-triggered applications.

  6. Q: What is the power supply voltage required for the 74LV74DB,118? A: The 74LV74DB,118 requires a power supply voltage of 2.0V to 5.5V.

  7. Q: Does the 74LV74DB,118 have any built-in protection features? A: Yes, the 74LV74DB,118 has built-in ESD protection on all inputs and outputs.

  8. Q: Can the 74LV74DB,118 be cascaded to create larger storage capacities? A: Yes, multiple 74LV74DB,118 ICs can be cascaded together to create larger storage capacities.

  9. Q: What is the typical propagation delay of the 74LV74DB,118? A: The typical propagation delay of the 74LV74DB,118 is around 6 ns.

  10. Q: What are some common applications of the 74LV74DB,118? A: The 74LV74DB,118 is commonly used in digital systems for data storage, synchronization, and sequential logic circuits.

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