SN74BCT573N

Product Overview

Category

The SN74BCT573N belongs to the category of integrated circuits (ICs) and specifically falls under the group of octal transparent D-type latches with 3-state outputs.

Use

This IC is commonly used in digital systems for storing and transferring data. It can be employed in various applications such as data storage, address decoding, and bus interfacing.

Characteristics

• Octal latch: The SN74BCT573N consists of eight individual transparent D-type latches, allowing it to store and transfer data on eight separate input/output lines.
• 3-state outputs: The IC features 3-state outputs, which enable the device to be connected to a common bus without causing conflicts or interference.
• High-speed operation: With a typical propagation delay of only a few nanoseconds, the SN74BCT573N offers fast data transfer capabilities.
• TTL compatibility: This IC is designed to be compatible with TTL (Transistor-Transistor Logic) inputs and outputs, making it suitable for integration into existing TTL-based systems.

Package and Quantity

The SN74BCT573N is available in a 20-pin plastic dual in-line package (PDIP). It is typically sold in reels or tubes, with a standard quantity of 25 pieces per package.

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
• Maximum clock frequency: 80 MHz
• Maximum output current: ±24 mA

Pin Configuration

The pin configuration of the SN74BCT573N is as follows:

+---+--+---+ Q0 |1 +--+ 20| VCC Q1 |2 19| D0 Q2 |3 18| D1 Q3 |4 17| D2 Q4 |5 SN74BCT573N 16| D3 Q5 |6 15| D4 Q6 |7 14| D5 Q7 |8 13| D6 GND |9 12| D7 OE |10 11| LE +----------+

Functional Features

Transparent Latch

The SN74BCT573N features transparent latches, which means that the input data is transferred to the output as long as the latch enable (LE) signal is high. This allows for real-time data transfer and storage.

3-State Outputs

The IC's 3-state outputs provide the ability to disconnect the device from the bus, effectively placing it in a high-impedance state. This feature prevents conflicts when multiple devices are connected to the same bus.

Output Enable Control

The output enable (OE) pin allows the user to control the output state of the latch. When OE is low, the outputs are enabled and reflect the input data. Conversely, when OE is high, the outputs are disabled and remain in a high-impedance state.

Advantages and Disadvantages

Advantages

• High-speed operation enables fast data transfer.
• TTL compatibility allows for easy integration into existing systems.
• 3-state outputs prevent bus conflicts.
• Transparent latch design facilitates real-time data transfer.

Disadvantages

• Limited voltage range (4.5V to 5.5V).
• Relatively small package size may limit its use in certain applications.
• Not suitable for high-frequency applications due to its maximum clock frequency of 80 MHz.

Working Principles

The SN74BCT573N operates based on the principles of digital logic. When the latch enable (LE) signal is high, the input data is transferred to the outputs in real-time. The output enable (OE) pin controls the state of the outputs, allowing them to be enabled or disabled as needed.

Application Field Plans

The SN74BCT573N can be utilized in various digital systems and applications, including: - Data storage and transfer in microcontrollers and microprocessors. - Address decoding in memory systems. - Bus interfacing in communication protocols such as I2C or SPI. - Control and synchronization of multiple devices in industrial automation.

Alternative Models

Several alternative models with similar functionality to the SN74BCT573N include: - 74HC573: A CMOS-based octal transparent latch with 3-state outputs. - CD74ACT573: An advanced CMOS octal transparent latch with 3-state outputs. - SN54BCT573: A bipolar TTL-compatible version of the SN74BCT573N.

These alternative models