MC74AC74N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics:
  • High-speed operation
  • Wide operating voltage range
  • Low power consumption
• Package: DIP (Dual In-line Package)
• Essence: The MC74AC74N is a dual D-type flip-flop IC that operates at high speed and low power consumption.
• Packaging/Quantity: Available in tubes of 25 units or reels of 2,000 units.

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 7 ns (typical)
• Input Capacitance: 3 pF (typical)
• Output Drive Capability: ±24 mA

Detailed Pin Configuration

The MC74AC74N has a total of 14 pins, which are assigned as follows:

1. CLR (Clear Input) - Active LOW
2. D (Data Input)
3. CLK (Clock Input)
4. GND (Ground)
5. Q (Flip-Flop Output)
6. Q̅ (Complementary Output)
7. PRE (Preset Input) - Active LOW
8. VCC (Positive Power Supply)
9. Q̅ (Complementary Output)
10. Q (Flip-Flop Output)
11. GND (Ground)
12. CLK (Clock Input)
13. D (Data Input)
14. CLR (Clear Input) - Active LOW

Functional Features

• Dual D-type positive-edge-triggered flip-flops
• Direct clear and preset inputs for synchronous operation
• High-speed operation allows for efficient data transfer
• Wide operating voltage range enables compatibility with various systems
• Low power consumption makes it suitable for battery-powered devices

Advantages and Disadvantages

Advantages: - High-speed operation ensures efficient data processing. - Wide operating voltage range allows for compatibility with different systems. - Low power consumption prolongs battery life in portable devices.

Disadvantages: - Limited output drive capability may restrict use in high-current applications. - The DIP package may not be suitable for space-constrained designs.

Working Principles

The MC74AC74N is a dual D-type flip-flop that operates on positive-edge-triggered clock signals. It stores data at the input (D) when the clock signal transitions from LOW to HIGH. The stored data is then available at the outputs (Q and Q̅). The clear (CLR) and preset (PRE) inputs allow for synchronous clearing or setting of the flip-flop, respectively.

Detailed Application Field Plans

The MC74AC74N is commonly used in various digital systems and applications, including:

1. Data storage and transfer circuits
2. Counters and frequency dividers
3. Shift registers
4. Control and timing circuits
5. Memory address decoding

Detailed and Complete Alternative Models

Some alternative models to the MC74AC74N include:

1. SN74AC74N by Texas Instruments
2. CD74AC74E by Harris Corporation
3. 74HC74 by NXP Semiconductors
4. MM74HC74AN by Fairchild Semiconductor
5. HEF4013BP by Nexperia

These alternatives offer similar functionality and characteristics, providing options for different design requirements.

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