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