MC74ACT573N Octal Latch by ON Semiconductor

The MC74ACT573N is a high-performance, octal latch manufactured by ON Semiconductor, designed to provide an efficient latching solution for a wide range of digital applications. This integrated circuit is part of the 74ACT family, which is renowned for its high-speed CMOS technology, offering both robustness and high functionality.

Key Features

• Logic Type: Octal D-Type Transparent Latch
• Number of Channels: 8
• Output Type: 3-State
• Operating Voltage: 4.5V to 5.5V
• High-Speed Performance: tPD 6ns (Max) at 5V
• Current - Output High, Low: 24mA, 24mA
• Operating Temperature: -40°C to 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole

Product Description

The MC74ACT573N is designed as an octal transparent latch with 3-state outputs. Each latch has a separate OE (Output Enable) and LE (Latch Enable) control. When LE is held high and OE is held low, the latch is transparent, allowing data from the D inputs to pass through to the outputs. When LE is taken low, the data that was present at the D inputs at the time the transition occurred is retained at the outputs, regardless of changes to the D input levels, effectively latching the data.

The 3-state outputs are crucial for bus-oriented applications. When OE is high, the outputs are in a high-impedance state, which allows for multiple devices to be connected to a common bus without interference.

This device is fabricated with silicon gate CMOS technology, which provides a significant reduction in power consumption and increased speed compared to general-purpose TTL circuits. It operates from a 4.5V to 5.5V power supply, making it compatible with a wide range of digital systems. The MC74ACT573N is provided in a 20-pin DIP package and is characterized for operation from -40°C to 85°C, ensuring reliable performance in varied environmental conditions.

With its combination of high-speed operation, broad operating voltage range, and 3-state output control, the MC74ACT573N is an ideal choice for implementing buffer registers, I/O ports, bidirectional bus drivers, and working memory in a variety of digital circuits.