SN74AS876DWE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Digital Logic
• Characteristics: High-speed, Low-power, TTL-Compatible
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: 8-Bit D-Type Flip-Flop with 3-State Outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6ns (typical)
• Output Current: ±24mA
• Power Dissipation: 500mW (max)

Detailed Pin Configuration

The SN74AS876DWE4 has a total of 20 pins, which are assigned as follows:

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

Functional Features

• 8-bit D-type flip-flop with 3-state outputs
• Asynchronous clear input for resetting the flip-flop
• Rising edge-triggered clock input for synchronous operation
• Active LOW output enable input for controlling the output state
• TTL-compatible inputs and outputs for easy integration with other logic circuits
• High-speed operation with low propagation delay time

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data processing - Low-power consumption for energy-efficient applications - TTL-compatible inputs and outputs ensure compatibility with other logic circuits - Asynchronous clear input provides flexibility in resetting the flip-flop

Disadvantages: - Limited operating temperature range (-40°C to +85°C) - Requires a supply voltage within the range of 4.5V to 5.5V - Output current limited to ±24mA

Working Principles

The SN74AS876DWE4 is an 8-bit D-type flip-flop with 3-state outputs. It stores and outputs data based on the clock signal provided at the CP pin. The rising edge of the clock pulse triggers the flip-flop to capture the data present at the D0-D7 inputs. The stored data is then available at the Q0-Q7 outputs.

The flip-flop can be asynchronously cleared by applying a LOW signal to the CLR input. This resets all the outputs to a known state. The output enable input (OE) controls whether the outputs are active or in a high-impedance state.

Detailed Application Field Plans

The SN74AS876DWE4 is commonly used in various digital logic applications, including:

1. Microprocessors and microcontrollers
2. Data storage systems
3. Communication devices
4. Industrial automation equipment
5. Automotive electronics
6. Consumer electronics

Its ability to store and manipulate data makes it suitable for applications that require sequential logic operations.

Detailed and Complete Alternative Models

1. SN74LS876: Similar functionality but operates at a lower speed.
2. SN74HC876: Higher-speed version with improved power consumption characteristics.
3. SN74F876: Faster operation with higher power dissipation.

These alternative models offer different trade-offs in terms of speed, power consumption, and compatibility with other logic families.

In conclusion, the SN74AS876DWE4 is a high-speed, low-power 8-bit D-type flip-flop with 3-state outputs. It is widely used in digital logic applications and offers advantages such as compatibility, flexibility, and efficient data processing. However, it has limitations in terms of operating temperature range and output current. Alternative models provide options with different performance characteristics to suit specific application requirements.