SN74AS74ANSR

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: Sequential Logic Device
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• High-Level Input Voltage: 2.0V to VCC
• Low-Level Input Voltage: GND to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Clock Frequency: 100MHz
• Propagation Delay Time: 10ns
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74AS74ANSR has a total of 14 pins. The pin configuration is as follows:

1. CLR (Clear) - Active LOW clear input
2. D (Data) - Data input for the flip-flop
3. CLK (Clock) - Clock input for triggering the flip-flop
4. PR (Preset) - Active LOW preset input
5. Q (Output) - Complementary output
6. Q̅ (Output) - True output
7. GND (Ground) - Ground reference
8. Q̅ (Output) - True output
9. Q (Output) - Complementary output
10. VCC (Supply Voltage) - Positive power supply
11. D (Data) - Data input for the flip-flop
12. CLK (Clock) - Clock input for triggering the flip-flop
13. PR (Preset) - Active LOW preset input
14. CLR (Clear) - Active LOW clear input

Functional Features

The SN74AS74ANSR is a dual D-type positive-edge-triggered flip-flop. It is designed to store and transfer data in sequential logic circuits. The flip-flop operates on the rising edge of the clock signal, capturing the data input and storing it in its internal memory. The complementary outputs provide both true and inverted versions of the stored data.

Advantages and Disadvantages

Advantages: - Dual flip-flop in a single package saves board space - Positive-edge triggering ensures reliable operation - Wide operating temperature range allows for various applications - Fast propagation delay time enables high-speed operation

Disadvantages: - Limited supply voltage range may restrict certain applications - Only supports positive-edge triggering, not suitable for negative-edge triggered systems

Working Principles

The SN74AS74ANSR flip-flop works based on the positive-edge-triggered D-type flip-flop principle. When the clock signal transitions from low to high (rising edge), the data input is sampled and stored in the flip-flop's internal memory. The stored data is then available at the complementary outputs. The clear and preset inputs allow for resetting or setting the flip-flop to a specific state.

Detailed Application Field Plans

The SN74AS74ANSR flip-flop finds applications in various digital systems where sequential logic is required. Some potential application fields include:

1. Counters and Registers: The flip-flop can be used as building blocks for designing counters and registers in digital circuits.
2. State Machines: Sequential circuits like state machines utilize flip-flops to store and transition between different states based on input conditions.
3. Data Storage: The flip-flop can be used to store temporary data in microcontrollers, microprocessors, and other digital systems.
4. Clock Synchronization: Flip-flops are commonly used in clock synchronization circuits to ensure proper timing and synchronization of signals.

Detailed and Complete Alternative Models

1. SN74AS74ADR: Similar dual D-type positive-edge-triggered flip-flop, but available in a different package (SOIC-14).
2. CD4013BCN: Dual D-type flip-flop with complementary outputs, available in a 14-pin DIP package.
3. MC74HC74AN: Dual D-type flip-flop with preset and clear inputs, available in a 14-pin DIP package.

These alternative models provide similar functionality and can be used as substitutes for the SN74AS74ANSR in various applications.

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