MC74AC377N

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-speed, low-power consumption
• Package: DIP (Dual In-line Package)
• Essence: A 8-bit D-type flip-flop with parallel enable and synchronous clear
• Packaging/Quantity: Available in tubes of 25 units or reels of 2,000 units

Specifications

• Supply Voltage Range: 2.0V to 6.0V
• High-Level Input Voltage: 2.0V (min), VCC (max)
• Low-Level Input Voltage: GND (min), 0.8V (max)
• High-Level Output Voltage: VCC - 0.5V (min), VCC (max)
• Low-Level Output Voltage: 0.0V (min), 0.5V (max)
• Maximum Operating Frequency: 140MHz

Detailed Pin Configuration

The MC74AC377N has a total of 20 pins, which are assigned as follows:

1. CP (Clock Pulse) - Clock input for flip-flop operation
2. D0-D7 (Data Inputs) - Parallel data inputs
3. CE (Clock Enable) - Active high clock enable input
4. P (Parallel Load) - Active high parallel load input
5. Q0-Q7 (Flip-Flop Outputs) - Outputs for each flip-flop
6. CLR (Clear) - Active low synchronous clear input
7. GND (Ground) - Ground reference
8. VCC (Supply Voltage) - Positive supply voltage

Functional Features

The MC74AC377N is a versatile flip-flop IC that offers the following features:

• Eight individual D-type flip-flops with common clock and clear inputs.
• Parallel enable input allows simultaneous loading of data into all flip-flops.
• Synchronous clear input resets all flip-flops to a low state when active.
• High-speed operation with a maximum frequency of 140MHz.
• Low-power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data processing. - Low-power consumption extends battery life in portable devices. - Versatile functionality with parallel enable and synchronous clear inputs.

Disadvantages: - Limited voltage supply range (2.0V to 6.0V). - Not suitable for applications requiring higher operating frequencies.

Working Principles

The MC74AC377N operates based on the principles of D-type flip-flops. It stores and outputs digital data based on clock signals and input conditions. The clock pulse synchronizes the transfer of data from the input pins (D0-D7) to the corresponding output pins (Q0-Q7). The parallel enable input (CE) and parallel load input (P) control the loading of data into the flip-flops simultaneously. The synchronous clear input (CLR) resets all flip-flops to a low state when activated.

Detailed Application Field Plans

The MC74AC377N is commonly used in various digital systems and applications, including:

1. Register banks in microprocessors and microcontrollers.
2. Data storage and retrieval in memory units.
3. Address decoding circuits.
4. State machine designs.
5. Counter and shift register implementations.
6. Control logic circuits.

Detailed and Complete Alternative Models

1. SN74AC377: Similar 8-bit D-type flip-flop IC with parallel enable and synchronous clear, offered by Texas Instruments.
2. CD74AC377: Another alternative 8-bit D-type flip-flop IC with similar features, manufactured by Texas Instruments.
3. 74HC377: 8-bit D-type flip-flop IC with parallel enable and synchronous clear, available from various manufacturers.

These alternative models offer similar functionality and can be used as substitutes for the MC74AC377N in various applications.

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