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SN74F74DR

SN74F74DR

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 for storing and transferring binary data
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage Range: 4.5V to 5.5V
  • High-Level Input Voltage: 2V
  • Low-Level Input Voltage: 0.8V
  • High-Level Output Voltage: 2.7V
  • Low-Level Output Voltage: 0.5V
  • Maximum Operating Frequency: 100MHz
  • Propagation Delay Time: 10ns
  • Set-Up Time: 15ns
  • Hold Time: 5ns

Detailed Pin Configuration

The SN74F74DR has a total of 14 pins, which are assigned as follows:

  1. CLR (Clear) - Active LOW clear input
  2. D1 (Data Input 1) - Data input for the first flip-flop
  3. CLK (Clock) - Clock input for both flip-flops
  4. D2 (Data Input 2) - Data input for the second flip-flop
  5. Q1 (Output 1) - Output of the first flip-flop
  6. Q1' (Complementary Output 1) - Complementary output of the first flip-flop
  7. GND (Ground) - Ground reference
  8. Q2' (Complementary Output 2) - Complementary output of the second flip-flop
  9. Q2 (Output 2) - Output of the second flip-flop
  10. PRE (Preset) - Active LOW preset input
  11. PR' (Complementary Preset) - Complementary preset input
  12. CLR' (Complementary Clear) - Complementary clear input
  13. VCC (Positive Power Supply) - Positive power supply voltage
  14. PR (Preset) - Active LOW preset input

Functional Features

  • Dual D-Type Flip-Flop: The SN74F74DR consists of two independent D-type flip-flops, allowing for the storage and transfer of binary data.
  • Positive-Edge Triggered: The flip-flops are triggered on the rising edge of the clock signal, ensuring synchronized data transfer.
  • Asynchronous Clear and Preset Inputs: The clear and preset inputs allow for immediate resetting or setting of the flip-flop outputs, regardless of the clock signal.
  • Complementary Outputs: The chip provides both normal and complementary outputs for each flip-flop, offering flexibility in circuit design.

Advantages and Disadvantages

Advantages: - Dual flip-flop configuration allows for efficient use of space and resources. - Positive-edge triggering ensures reliable and synchronized data transfer. - Asynchronous clear and preset inputs provide flexibility in controlling the flip-flop outputs. - Complementary outputs enable versatile circuit design.

Disadvantages: - Limited operating frequency compared to some newer flip-flop ICs. - Propagation delay time may impact timing-sensitive applications.

Working Principles

The SN74F74DR operates based on the principles of digital logic. It utilizes positive-edge triggering to capture and store data at the rising edge of the clock signal. The clear and preset inputs allow for immediate control over the flip-flop outputs, regardless of the clock state. The complementary outputs provide inverted versions of the normal outputs, enabling various logical operations in circuit design.

Detailed Application Field Plans

The SN74F74DR is commonly used in various digital systems and applications, including:

  1. Sequential Logic Circuits: It is widely employed in the design of counters, shift registers, and other sequential logic circuits.
  2. Data Storage: The flip-flops can be used to store and transfer binary data in memory systems or data processing units.
  3. Synchronization: It is utilized for synchronizing signals in communication systems, ensuring accurate data transmission.
  4. Control Systems: The chip finds applications in control systems where synchronized operations are required.

Detailed and Complete Alternative Models

  1. SN74LS74A: Similar dual D-type flip-flop with improved specifications and performance.
  2. CD4013B: CMOS-based dual D-type flip-flop with higher operating frequency and lower power consumption.
  3. MC74HC74A: High-speed dual D-type flip-flop with enhanced noise immunity and wider supply voltage range.

These alternative models offer similar functionality to the SN74F74DR but may have different characteristics and specifications.

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Καταγράψτε 10 συνήθεις ερωτήσεις και απαντήσεις που σχετίζονται με την εφαρμογή του SN74F74DR σε τεχνικές λύσεις

Sure! Here are 10 common questions and answers related to the application of SN74F74DR:

  1. Q: What is SN74F74DR? A: SN74F74DR is a dual D-type flip-flop integrated circuit (IC) that can store one bit of data in each flip-flop.

  2. Q: What is the voltage supply range for SN74F74DR? A: The voltage supply range for SN74F74DR is typically between 4.5V and 5.5V.

  3. Q: What is the maximum clock frequency supported by SN74F74DR? A: SN74F74DR can support clock frequencies up to 100 MHz.

  4. Q: How many inputs and outputs does SN74F74DR have? A: SN74F74DR has two inputs (D and CLK) and two outputs (Q and Q̅).

  5. Q: Can SN74F74DR be used as a frequency divider? A: Yes, SN74F74DR can be used as a frequency divider by connecting the output (Q or Q̅) to the input (CLK).

  6. Q: What is the setup time requirement for the D input of SN74F74DR? A: The setup time requirement for the D input of SN74F74DR is typically 15 ns.

  7. Q: Is SN74F74DR suitable for high-speed applications? A: Yes, SN74F74DR is designed for high-speed operation and can be used in various high-speed applications.

  8. Q: Can SN74F74DR be cascaded to create larger counters or registers? A: Yes, multiple SN74F74DR ICs can be cascaded together to create larger counters or registers.

  9. Q: What is the power consumption of SN74F74DR? A: The power consumption of SN74F74DR is typically low, making it suitable for battery-powered applications.

  10. Q: Are there any special considerations when using SN74F74DR in noisy environments? A: It is recommended to use proper decoupling capacitors and noise filtering techniques to minimize the impact of noise on SN74F74DR's performance.

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