SN74LVC821ADWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gates
• Characteristics: Low Voltage, CMOS Technology
• Package: SOIC-20
• Essence: 8-Bit D-Type Flip-Flop with 3-State Outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• High-Level Input Voltage: 2V to VCC + 0.5V
• Low-Level Input Voltage: -0.5V to 0.8V
• High-Level Output Voltage: VCC - 0.5V
• Low-Level Output Voltage: 0.5V
• Maximum Operating Frequency: 200MHz
• Propagation Delay Time: 4.6ns (typical)

Detailed Pin Configuration

The SN74LVC821ADWR has a total of 20 pins. The pin configuration is as follows:

1. CLR (Clear) - Active LOW input for clearing the flip-flop.
2. D0-D7 (Data Inputs) - Eight data inputs for the flip-flop.
3. CP (Clock Pulse) - Clock input for capturing the data on the rising edge.
4. OE (Output Enable) - Active LOW output enable input.
5. Q0-Q7 (Flip-Flop Outputs) - Eight outputs representing the stored data.
6. GND (Ground) - Ground reference for the IC.
7. VCC (Supply Voltage) - Positive supply voltage for the IC.

Functional Features

• 8-bit D-type flip-flop with 3-state outputs.
• Provides non-inverting storage of data.
• Data is captured on the rising edge of the clock pulse.
• Outputs can be enabled or disabled using the output enable input.
• Supports both parallel and serial data transfer.

Advantages

• Low voltage operation allows for compatibility with a wide range of systems.
• CMOS technology provides low power consumption.
• 3-state outputs allow for easy bus sharing and interfacing with other devices.
• High operating frequency enables fast data processing.

Disadvantages

• Limited to 8-bit data storage, may not be suitable for applications requiring larger data sizes.
• Requires an external clock signal for proper operation.
• May not be compatible with high-voltage systems due to its low voltage characteristics.

Working Principles

The SN74LVC821ADWR is based on CMOS technology and operates by storing data in eight D-type flip-flops. The data inputs (D0-D7) are captured on the rising edge of the clock pulse (CP). The stored data can be accessed through the eight flip-flop outputs (Q0-Q7). The output enable input (OE) controls whether the outputs are active or in a high-impedance state.

Detailed Application Field Plans

The SN74LVC821ADWR can be used in various applications, including:

1. Data storage and retrieval systems.
2. Address decoding and multiplexing circuits.
3. Parallel-to-serial and serial-to-parallel data conversion.
4. Bus interface and buffering.
5. Control and timing circuits in digital systems.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74LVC821ADWR include:

1. SN74LVC823ADWR - 9-bit D-Type Flip-Flop with 3-State Outputs.
2. SN74LVC825ADWR - 10-bit D-Type Flip-Flop with 3-State Outputs.
3. SN74LVC827ADWR - 11-bit D-Type Flip-Flop with 3-State Outputs.

These alternative models provide additional data storage capacity while maintaining the same 3-state output functionality.

In conclusion, the SN74LVC821ADWR is an 8-bit D-type flip-flop with 3-state outputs. It offers low voltage operation, CMOS technology, and a compact SOIC-20 package. With its versatile features and wide range of applications, it serves as a reliable component in various digital systems.