CD74HCT377E

Product Overview

• Category: Integrated Circuit (IC)
• Use: Flip-Flop
• Characteristics: High-speed, CMOS logic, 8-bit D-type flip-flop with clear
• Package: DIP (Dual In-line Package)
• Essence: The CD74HCT377E is a popular integrated circuit used for storing and transferring data in digital systems.
• Packaging/Quantity: Available in tubes or reels, typically containing 25 pieces per package.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Logic Family: HCT
• Number of Flip-Flops: 8
• Input/Output Compatibility: TTL-Compatible
• Maximum Clock Frequency: 74 MHz
• Propagation Delay: 15 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HCT377E has a total of 20 pins, which are assigned specific functions as follows:

1. CP (Clock Pulse) - Clock input for flip-flop operation.
2. D0-D7 (Data Inputs) - Inputs for the 8 bits of data to be stored.
3. Q0-Q7 (Outputs) - Outputs for the stored data.
4. MR (Master Reset) - Active low input used to clear all flip-flops.
5. OE (Output Enable) - Active low input used to enable/disable the outputs.
6. GND (Ground) - Ground reference for the IC.
7. VCC (Supply Voltage) - Positive power supply for the IC.

Functional Features

• High-Speed Operation: The CD74HCT377E operates at high clock frequencies, making it suitable for applications requiring fast data storage and transfer.
• CMOS Logic: The use of CMOS technology allows for low power consumption and compatibility with TTL logic levels.
• 8-Bit D-Type Flip-Flop: The IC has eight individual flip-flops, each capable of storing one bit of data.
• Clear Function: The master reset (MR) input allows for clearing all the flip-flops simultaneously.
• Output Enable: The output enable (OE) input provides control over the activation of the output pins.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data handling in time-critical applications. - CMOS technology ensures low power consumption and compatibility with other logic families. - Compact DIP package allows for easy integration into various circuit designs. - Clear function provides a convenient way to reset all flip-flops at once.

Disadvantages: - Limited number of flip-flops may not be sufficient for applications requiring larger data storage. - The DIP package may not be suitable for space-constrained designs that require surface-mount components.

Working Principles

The CD74HCT377E operates based on the principles of D-type flip-flops. It stores data on the rising edge of the clock pulse (CP) input. The stored data remains unchanged until the next clock pulse arrives. The master reset (MR) input can be used to clear all the flip-flops, setting their outputs to a known state. The output enable (OE) input controls whether the stored data is presented at the output pins or not.

Detailed Application Field Plans

The CD74HCT377E finds applications in various digital systems where data storage and transfer are required. Some common application fields include:

1. Microcontrollers: Used for storing and transferring data between the microcontroller and external devices.
2. Data Communication Systems: Employed in data buffers and registers for efficient data handling.
3. Digital Signal Processing: Utilized for temporary storage of intermediate results during signal processing operations.
4. Memory Addressing: Used in address decoders and multiplexers for addressing memory locations.

Detailed and Complete Alternative Models

1. SN74HCT377: Similar to CD74HCT377E, but with a different package (SOIC) and pin configuration.
2. 74HC377: A non-inverting version of the flip-flop, compatible with CMOS and TTL logic levels.
3. MC74HCT377A: Offers enhanced noise immunity and latch-up performance compared to the standard version.

These alternative models provide similar functionality to the CD74HCT377E and can be considered as replacements based on specific requirements.

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