SN74LS75DE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: TTL Logic, Quad D-Type Flip-Flop
• Package: 16-Pin SOIC (Small Outline Integrated Circuit)
• Essence: Reliable and efficient digital storage element
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Logic Family: LS-TTL (Low Power Schottky Transistor-Transistor Logic)
• Number of Flip-Flops: 4
• Input Voltage: 2.0V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 15ns (typical)
• Output Current: ±8mA
• Supply Voltage: 4.75V to 5.25V

Detailed Pin Configuration

The SN74LS75DE4 has a total of 16 pins, which are assigned as follows:

1. CLR (Clear) - Active LOW clear input
2. D0 (Data Input 0) - Data input for flip-flop 0
3. CP0 (Clock Pulse 0) - Clock pulse input for flip-flop 0
4. Q0 (Flip-Flop 0 Output) - Output of flip-flop 0
5. Q̅0 (Complement of Flip-Flop 0 Output) - Complementary output of flip-flop 0
6. GND (Ground) - Ground reference
7. D1 (Data Input 1) - Data input for flip-flop 1
8. CP1 (Clock Pulse 1) - Clock pulse input for flip-flop 1
9. Q1 (Flip-Flop 1 Output) - Output of flip-flop 1
10. Q̅1 (Complement of Flip-Flop 1 Output) - Complementary output of flip-flop 1
11. D2 (Data Input 2) - Data input for flip-flop 2
12. CP2 (Clock Pulse 2) - Clock pulse input for flip-flop 2
13. Q2 (Flip-Flop 2 Output) - Output of flip-flop 2
14. Q̅2 (Complement of Flip-Flop 2 Output) - Complementary output of flip-flop 2
15. VCC (Supply Voltage) - Positive power supply
16. D3 (Data Input 3) - Data input for flip-flop 3

Functional Features

• Quad D-Type Flip-Flop: The SN74LS75DE4 integrates four independent D-type flip-flops in a single package.
• TTL Logic: It operates on LS-TTL logic, providing low power consumption and high noise immunity.
• Clear Function: The active LOW clear input (CLR) allows resetting all flip-flops simultaneously.
• Synchronous Operation: The flip-flops are clocked synchronously, ensuring accurate data storage and retrieval.
• Complementary Outputs: Each flip-flop has a complementary output (Q̅) alongside the main output (Q).

Advantages and Disadvantages

Advantages

• Compact Integration: Four flip-flops in a single package save board space and simplify circuit design.
• Low Power Consumption: LS-TTL logic ensures efficient power usage.
• Reliable Operation: LS-TTL provides high noise immunity, making it suitable for various applications.

Disadvantages

• Limited Number of Flip-Flops: The IC only contains four flip-flops, which may not be sufficient for complex designs.
• Propagation Delay: The propagation delay of 15ns may limit the maximum clock frequency in certain applications.

Working Principles

The SN74LS75DE4 operates based on the principles of D-type flip-flops. Each flip-flop stores a single bit of digital information. The data input (D) determines the state of the flip-flop, which is captured and stored when a clock pulse (CP) is applied. The stored value can be accessed through the output (Q) and its complement (Q̅). The clear input (CLR) resets all flip-flops simultaneously to an initial state.

Detailed Application Field Plans

The SN74LS75DE4 finds applications in various digital systems, including:

1. Counters and Registers: It can be used as a building block for designing counters and registers.
2. Data Storage: The flip-flops provide reliable storage elements for temporary or permanent data storage.
3. State Machines: The IC enables the implementation of sequential logic circuits, such as state machines.
4. Address Decoders: It can be utilized in address decoding circuits for memory and peripheral interfacing.

Detailed and Complete Alternative Models

• SN74LS175