STMicroelectronics M74HCT373M1R Octal D-Type Latch

The M74HCT373M1R from STMicroelectronics is a high-speed CMOS octal D-type latch designed for use in controlling data flow in systems where two-way communication is necessary. This integrated circuit is a part of the HCT family, which means it is compatible with TTL logic voltage levels while benefiting from the low power consumption of CMOS technology.

Featuring eight latches with 3-state outputs, this device is perfect for interfacing with bus-oriented systems. Each latch is transparent, meaning that when the latch enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the data that was present at the D inputs at the time the transition occurred is stored in the latch, and the Q outputs will remain at this state as long as LE is held low.

The M74HCT373M1R operates at a voltage range of 4.5V to 5.5V, making it suitable for a variety of digital applications. It also provides a high noise immunity typical of CMOS devices. The output control does not affect the internal operation of the latches or the LE. When the output enable (OE) input is high, the outputs are in a high impedance state, which is particularly useful in bus-oriented applications.

Offered in an SO-20 package, the M74HCT373M1R is compact and suitable for surface-mounted technology (SMT), ensuring a space-efficient design in printed circuit boards (PCBs). This product is also characterized for operation from -55°C to 125°C, ensuring reliability across a wide range of environmental conditions.

With its fast propagation delay times and low power consumption, the M74HCT373M1R is an excellent choice for use in high-performance, low-power systems such as computers, communication devices, and sophisticated control systems. Its robustness and compatibility with older TTL logic make it a versatile component for both new designs and legacy system upgrades.

For more detailed specifications and application information, designers and engineers are encouraged to consult the datasheet provided by STMicroelectronics, which offers a comprehensive guide to the M74HCT373M1R's capabilities and recommended usage.