ON Semiconductor HD74HC373R Octal D-Type Latch

The ON Semiconductor HD74HC373R is a high-performance, octal D-type transparent latch that is designed to be used in a wide range of digital applications. This integrated circuit is part of the HC family and is characterized by its high speed and low power consumption. The device features eight latches with three-state outputs, making it ideal for interfacing with bus-oriented systems.

The HD74HC373R operates with an input voltage range from 2V to 6V, which allows it to be used in both TTL and CMOS environments. Its versatile nature ensures compatibility with a variety of microprocessors and digital systems. The octal D-type latch is capable of storing eight bits of data when the latch enable (LE) input is held high. The data is transferred from the D inputs to the latch outputs when LE transitions from high to low.

Each latch is equipped with a three-state output control pin (OE). When OE is low, the latch outputs are active and reflect the stored data. When OE is high, the outputs are in a high-impedance state, effectively isolating the latch from the bus. This feature allows for multiple latches to be connected to the same output bus without the risk of data contention or bus loading issues.

The HD74HC373R is designed with latch-up performance that exceeds 100mA per JESD 78, Class II, providing robustness and reliability in operation. The device is also fabricated with silicon gate CMOS technology, ensuring low power dissipation and high noise immunity, which are critical for stable performance in electronic systems.

ON Semiconductor's HD74HC373R comes in a variety of packages, including the widely used SOP and DIP formats, making it easy to integrate into both prototyping and production environments. Its industry-standard pinout ensures easy replacement and compatibility with existing designs without the need for significant board rework or redesign.

Whether you are designing data storage, buffer registers, or bus interface circuits, the ON Semiconductor HD74HC373R offers a reliable and efficient solution for your digital logic needs.