ON Semiconductor MC74HCT573ADWR2 Octal Latch

The ON Semiconductor MC74HCT573ADWR2 is a high-performance, octal transparent latch that is designed to interface directly with the high-speed performance requirements of modern digital systems. This integrated circuit (IC) is part of the HCT family, which means it is compatible with HCMOS logic levels and can be used in a wide range of applications including computers, telecommunications, and industrial control systems where a robust and reliable latching mechanism is necessary.

Featuring eight latches with three-state outputs, the MC74HCT573ADWR2 provides a convenient way to temporarily store data and control the flow of data in a system. Each latch can be individually controlled, allowing for precise management of data lines. The three-state outputs allow for connection to a bus-oriented system, giving the user the ability to isolate the bus when not in use.

The device operates with a supply voltage range from 4.5V to 5.5V, which allows for compatibility with TTL power levels while maintaining CMOS low power consumption. The IC has an input threshold that is compatible with TTL logic levels, which means it can be driven by TTL or CMOS outputs without the need for additional interfacing components.

The MC74HCT573ADWR2 also features a latch enable (LE) input and output enable (OE) inputs. The LE input controls the latching function; when LE is high, the latches are transparent, and data on the D inputs pass through to the outputs. When LE is low, the data that was on the D inputs when LE was last high is stored in the latches. The OE inputs are used to place the outputs in either a normal logic state or a high-impedance state, thus enabling or disabling the outputs.

This device is offered in a wide-body SOIC-20 package, ensuring ease of integration into surface mount technology (SMT) manufacturing processes. The MC74HCT573ADWR2 is characterized for operation from -55°C to 125°C, providing a wide operating temperature range suitable for challenging environmental conditions. With its robust design and versatile functionality, the ON Semiconductor MC74HCT573ADWR2 is a reliable choice for designers looking to incorporate an octal latch into their digital systems.