MM74HC74AN

Product Overview

• Category: Integrated Circuit
• Use: Flip-Flop
• Characteristics: High-Speed, Dual D-Type Positive-Edge-Triggered Flip-Flop
• Package: PDIP (Plastic Dual In-Line Package)
• Essence: Digital Logic IC for storing and transferring binary data
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Supply Voltage: 2V to 6V
• High-Level Input Voltage: 2V
• Low-Level Input Voltage: 0.8V
• High-Level Output Current: -0.4mA
• Low-Level Output Current: 4mA
• Propagation Delay Time: 15ns
• Operating Temperature Range: -55°C to +125°C

Detailed Pin Configuration

The MM74HC74AN has a total of 14 pins:

1. CLR (Clear) - Active LOW input for resetting the flip-flop
2. PR (Preset) - Active LOW input for setting the flip-flop
3. Q1 (Output 1) - Output for the first flip-flop
4. Q1 (Complementary Output 1) - Complementary output for the first flip-flop
5. GND (Ground) - Ground reference
6. D1 (Data 1) - Data input for the first flip-flop
7. CLK (Clock) - Clock input for triggering the flip-flop
8. VCC (Positive Supply Voltage) - Positive supply voltage input
9. Q2 (Output 2) - Output for the second flip-flop
10. Q2 (Complementary Output 2) - Complementary output for the second flip-flop
11. D2 (Data 2) - Data input for the second flip-flop
12. SET (Set) - Active LOW input for setting the flip-flop
13. Q2 (Output 2) - Output for the second flip-flop
14. VCC (Positive Supply Voltage) - Positive supply voltage input

Functional Features

• Dual D-Type Flip-Flop: The MM74HC74AN consists of two independent D-type flip-flops, allowing for the storage and transfer of binary data.
• Positive-Edge Triggered: The flip-flop is triggered by the rising edge of the clock signal, ensuring accurate data capture.
• High-Speed Operation: With a propagation delay time of only 15ns, the MM74HC74AN enables fast data processing.

Advantages and Disadvantages

Advantages: - Compact Design: The IC is housed in a PDIP package, making it suitable for space-constrained applications. - Versatile: The MM74HC74AN can be used in various digital logic circuits requiring flip-flop functionality. - Wide Operating Temperature Range: It can operate reliably in extreme temperature conditions (-55°C to +125°C).

Disadvantages: - Limited Voltage Range: The supply voltage must be within the range of 2V to 6V, which may not be suitable for all applications. - Not ESD Protected: The IC does not have built-in Electrostatic Discharge (ESD) protection, requiring additional precautions during handling.

Working Principles

The MM74HC74AN operates based on the principles of sequential logic. When the clock input receives a rising edge, the data present at the D1 and D2 inputs is transferred to the corresponding Q1 and Q2 outputs, respectively. The CLR and PR inputs allow for resetting and setting the flip-flop, while the SET input sets the flip-flop when activated. The complementary outputs provide the inverse logic states of the main outputs.

Detailed Application Field Plans

The MM74HC74AN is commonly used in various digital systems and applications, including:

1. Counters and Registers: It can be utilized as a building block for designing counters and registers in digital circuits.
2. Memory Units: The flip-flop functionality enables the creation of memory units for storing binary data.
3. Data Synchronization: It is employed to synchronize data transfers between different parts of a digital system.
4. State Machines: The flip-flop can be used to implement state machines for controlling sequential operations.

Detailed and Complete Alternative Models

• SN74HC74N
• CD74HC74E
• 74HCT74

These alternative models offer similar functionality and characteristics to the MM74HC74AN, providing flexibility in choosing the most suitable option for specific applications.

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