MC74HC74ADG

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-Speed, Dual D-Type Positive-Edge-Triggered Flip-Flop
• Package: SOIC-14
• Essence: The MC74HC74ADG is a dual D-type flip-flop that operates at high speed and is triggered on the positive edge of the clock signal.
• Packaging/Quantity: Available in reels of 2500 units or tubes of 48 units.

Specifications

• Logic Family: HC
• Number of Elements: 2
• Number of Bits per Element: 1
• Propagation Delay Time: 15 ns
• Operating Voltage Range: 2V to 6V
• Operating Temperature Range: -55°C to +125°C
• Output Current: ±25mA
• Input Capacitance: 3.5pF
• Power Dissipation: 500mW

Detailed Pin Configuration

The MC74HC74ADG has a total of 14 pins arranged as follows:

__ __ Q1 |1 \__/ 14| VCC Q2 |2 13| CLK GND |3 12| D1 D2 |4 11| CLR CLR |5 10| PRE PRE |6 9| D2 D1 |7 8| Q2 ‾‾ ‾‾

Functional Features

• Dual D-type flip-flop with independent set and reset inputs.
• Positive-edge-triggered operation.
• High-speed performance suitable for various applications.
• Wide operating voltage range allows compatibility with different systems.
• Low power consumption.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data processing.
• Independent set and reset inputs provide flexibility in controlling the flip-flop's state.
• Wide operating voltage range allows for compatibility with various systems.
• Low power consumption helps conserve energy.

Disadvantages

• Limited number of bits per element (1 bit per flip-flop).
• Propagation delay time may affect timing-sensitive applications.

Working Principles

The MC74HC74ADG is a positive-edge-triggered flip-flop. It stores a single bit of data and can be set or reset independently using the SET (PRE) and RESET (CLR) inputs, respectively. The stored data is available at the Q1 and Q2 outputs. On the rising edge of the clock signal (CLK), the input data (D1 and D2) is transferred to the outputs, following the state determined by the set and reset inputs.

Detailed Application Field Plans

The MC74HC74ADG finds applications in various digital systems where the storage and transfer of binary data are required. Some specific application fields include:

1. Digital Counters: The flip-flop can be used as a building block for designing digital counters that increment or decrement based on clock pulses.
2. Shift Registers: Multiple flip-flops can be cascaded to create shift registers, enabling serial-to-parallel or parallel-to-serial data conversion.
3. Memory Units: Flip-flops are fundamental components in memory units, such as registers and RAM modules, for storing and retrieving data.
4. Control Systems: The flip-flop's ability to store and control binary states makes it suitable for use in control systems, such as sequential logic circuits.

Detailed and Complete Alternative Models

Some alternative models to the MC74HC74ADG include:

1. SN74HC74: Similar dual D-type flip-flop with positive-edge triggering, available in different package options.
2. CD4013: Dual D-type flip-flop with complementary outputs, suitable for various applications.
3. 74LS74: Dual D-type flip-flop with TTL logic levels, compatible with older systems.

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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