74LV74DB,112

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: Low-voltage, dual D-type flip-flop with set and reset
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Digital logic component for storing and manipulating binary data
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Logic Family: LV (Low-Voltage)
• Number of Flip-Flops: 2
• Input/Output Compatibility: TTL, CMOS
• Operating Temperature Range: -40°C to +125°C
• Propagation Delay Time: 6 ns (typical)
• Output Current: ±8 mA
• Input Capacitance: 3.5 pF
• Power Dissipation: 4.5 mW (typical)

Pin Configuration

The 74LV74DB,112 IC has a total of 14 pins, which are assigned specific functions 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. PR (Preset) - Active LOW preset input
6. Q1 (Flip-Flop 1 Output) - Output of the first flip-flop
7. Q2 (Flip-Flop 2 Output) - Output of the second flip-flop
8. GND (Ground) - Ground reference
9. Q2 (Flip-Flop 2 Output) - Complementary output of the second flip-flop
10. Q1 (Flip-Flop 1 Output) - Complementary output of the first flip-flop
11. PR (Preset) - Active LOW preset input
12. D2 (Data Input 2) - Data input for the second flip-flop
13. CLK (Clock) - Clock input for both flip-flops
14. D1 (Data Input 1) - Data input for the first flip-flop

Functional Features

• Dual D-type flip-flop with individual set and reset inputs
• Edge-triggered flip-flop operation on the positive edge of the clock signal
• Asynchronous clear and preset inputs for immediate state control
• Low-voltage operation suitable for battery-powered applications
• Compatible with both TTL and CMOS logic levels
• High-speed operation with low propagation delay time
• Compact SOIC package for space-constrained designs

Advantages and Disadvantages

Advantages: - Versatile flip-flop component for various digital logic applications - Low-voltage operation allows for compatibility with modern electronic systems - Edge-triggered operation ensures reliable data storage and synchronization - Compact package size enables integration in space-limited designs

Disadvantages: - Limited number of flip-flops per IC (only two in this case) - Requires external clock signal for proper operation - Not suitable for high-speed or high-frequency applications

Working Principles

The 74LV74DB,112 is a dual D-type flip-flop that stores and manipulates binary data. It operates based on the positive edge of the clock signal, which triggers the transfer of data from the input to the output. The flip-flop has individual set (PR) and reset (CLR) inputs, allowing for immediate control over its state.

When the clock signal rises from LOW to HIGH, the data present at the D1 and D2 inputs are transferred to the Q1 and Q2 outputs, respectively. The complementary outputs, Q1' and Q2', provide the inverse of the respective outputs.

The clear input (CLR) is an active LOW signal that asynchronously resets both flip-flops to a known state when asserted. Similarly, the preset input (PR) is an active LOW signal that sets both flip-flops to a predefined state when activated.

Detailed Application Field Plans

The 74LV74DB,112 IC finds applications in various digital systems where the storage and manipulation of binary data are required. Some potential application fields include:

1. Digital Counters: The flip-flop can be used as a building block for designing synchronous or asynchronous counters.
2. Shift Registers: Multiple flip-flops can be cascaded to create shift registers for serial data storage and shifting operations.
3. Data Synchronization: The edge-triggered operation ensures synchronized data transfer between different parts of a digital system.
4. State Machines: Flip-flops are essential components in the design of sequential logic circuits, such as finite state machines.
5. Memory Units: The flip-flop can be utilized as a basic memory element