SN74LVC821APWRG4

Overview

• Category: Integrated Circuit (IC)
• Use: Logic Gate
• Characteristics: Low Voltage, CMOS Technology
• Package: TSSOP-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: 100MHz
• Propagation Delay Time: 3.6ns (typical)
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The SN74LVC821APWRG4 has a TSSOP-20 package with the following pin configuration:

__ __ Q1 -| 1 20 |- VCC Q2 -| 2 19 |- GND Q3 -| 3 18 |- D3 Q4 -| 4 17 |- D2 Q5 -| 5 16 |- D1 Q6 -| 6 15 |- D0 Q7 -| 7 14 |- CLK Q8 -| 8 13 |- OE# GND -| 9 12 |- CLR# D4 -|10 11 |- Q0 ----------

Functional Features

• 8-Bit D-Type Flip-Flop with 3-State Outputs
• Positive-Edge Triggered Clock Input (CLK)
• Asynchronous Clear Input (CLR#)
• Output Enable Input (OE#)
• 3-State Outputs for Bus-Oriented Applications
• Low Power Consumption
• High-Speed Operation

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems. - 3-state outputs enable easy bus sharing between multiple devices. - Low power consumption makes it suitable for battery-powered applications. - High-speed operation ensures efficient data processing.

Disadvantages: - Limited operating temperature range (-40°C to 85°C). - TSSOP package may require careful handling during assembly.

Working Principles

The SN74LVC821APWRG4 is an 8-bit D-type flip-flop with 3-state outputs. It operates on CMOS technology, allowing for low voltage operation. The positive-edge triggered clock input (CLK) controls the state of the flip-flop, while the asynchronous clear input (CLR#) resets the output to a known state. The output enable input (OE#) enables or disables the 3-state outputs, making it suitable for bus-oriented applications.

Detailed Application Field Plans

The SN74LVC821APWRG4 can be used in various applications, including:

1. Microprocessor Systems: It can be used as a register to store data temporarily in microprocessor-based systems.
2. Data Communication: It can be utilized in serial-to-parallel or parallel-to-serial data conversion circuits.
3. Memory Systems: It can serve as a buffer or latch in memory systems to hold address or data information.
4. Control Systems: It can be employed in control systems to store and manipulate digital signals.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74LVC821APWRG4 are:

1. SN74LVC821ADW: SOIC-20 package, wider operating temperature range (-55°C to 125°C).
2. SN74LVC821APW: TSSOP-20 package, lower propagation delay time (2.5ns typical).

These alternative models can be considered based on specific requirements such as temperature range, package type, or speed.

In conclusion, the SN74LVC821APWRG4 is a versatile 8-bit D-type flip-flop with 3-state outputs. Its low voltage operation, wide supply voltage range, and high-speed operation make it suitable for various applications in microprocessor systems, data communication, memory systems, and control systems. While it has some limitations in terms of operating temperature range and package type, there are alternative models available to cater to different needs.