Encyclopedia Entry: 74VHC573SJ

Product Overview

Category

The 74VHC573SJ belongs to the category of integrated circuits (ICs) and specifically falls under the family of VHC logic devices.

Use

This IC is commonly used in digital electronic systems for data storage and transfer applications. It serves as an octal transparent latch with 3-state outputs.

Characteristics

• High-speed operation: The 74VHC573SJ offers fast switching times, making it suitable for high-frequency applications.
• Low power consumption: This IC is designed to minimize power consumption, making it energy-efficient.
• Wide operating voltage range: It can operate within a voltage range of 2.0V to 5.5V, providing flexibility in various electronic systems.
• 3-state outputs: The 74VHC573SJ features 3-state outputs, allowing multiple devices to share a common bus.

Package and Quantity

The 74VHC573SJ is available in a small outline package (SOP) with 20 pins. It is typically sold in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Supply Voltage Range: 2.0V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 100MHz
• Output Drive Capability: ±8mA

Pin Configuration

The 74VHC573SJ has a total of 20 pins, which are assigned specific functions. The pin configuration is as follows:

+---+--+---+ D0 -|1 +--+ 20|- VCC D1 -|2 |- D7 D2 -|3 |- GND D3 -|4 |- OE D4 -|5 |- LE D5 -|6 |- Q7 D6 -|7 |- Q6 D7 -|8 |- Q5 GND -|9 |- Q4 Q0 -|10 |- Q3 Q1 -|11 |- Q2 Q2 -|12 |- Q1 Q3 -|13 |- Q0 Q4 -|14 |- GND Q5 -|15 |- D7 Q6 -|16 |- D6 Q7 -|17 |- D5 OE -|18 |- D4 LE -|19 |- D3 VCC -|20 |- D2 +---+--+---+

Functional Features

The 74VHC573SJ offers the following functional features:

• Octal transparent latch: It can store and hold data on its eight input pins (D0-D7) based on the state of the latch enable (LE) pin.
• 3-state outputs: The IC provides three-state outputs (Q0-Q7), allowing for bus sharing among multiple devices.
• Output enable (OE) control: The OE pin enables or disables the outputs, providing flexibility in controlling data flow.

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient data transfer in time-critical applications.
• Low power consumption makes it suitable for battery-powered devices.
• Wide operating voltage range provides compatibility with various electronic systems.
• 3-state outputs facilitate bus sharing and reduce conflicts in multi-device configurations.

Disadvantages

• Limited output drive capability may restrict its use in applications requiring higher current sourcing/sinking.
• The small outline package (SOP) may pose challenges in manual soldering or prototyping scenarios.

Working Principles

The 74VHC573SJ operates based on the principles of latch-based storage and data transfer. When the latch enable (LE) pin is active, the input data on pins D0-D7 is latched and stored internally. The stored data can be read from the output pins Q0-Q7 when the output enable (OE) pin is active. The three-state outputs allow multiple devices to share a common bus, enabling efficient data transfer between them.

Application Field Plans

The 74VHC573SJ finds applications in various digital electronic systems, including but not limited to:

1. Microcontrollers and microprocessors
2. Data communication systems
3. Memory modules
4. Industrial automation equipment
5. Automotive electronics
6. Consumer electronics

Alternative Models

For similar functionality and compatibility, alternative models to the 74VHC573SJ include:

1. 74HC573: A non-inverting octal transparent latch with 3-state outputs.
2. 74