74LVTH273WM

Overview

The 74LVTH273WM is an octal D-type flip-flop with 3-STATE outputs manufactured by Fairchild Semiconductor. It belongs to the LVT (Low Voltage TTL) and LVTH series, designed for low-voltage applications with a supply voltage range of 2.5V to 3.6V. The device features 8-bit data inputs and outputs, controlled by a single clock input and output enable pin. It utilizes advanced BiCMOS technology to achieve high-speed operation comparable to 5V ABT logic while maintaining low power dissipation typical of CMOS devices. The component is housed in a 20-pin SOIC package.

Feature Summary

• Octal D-type flip-flop architecture with 3-STATE outputs for bus-oriented applications
• Advanced BiCMOS technology enabling high-speed performance similar to 5V ABT logic
• Designed for low-voltage operation with capability to interface directly to 5V signal environments
• Provides glitch-free bus loading during power-up or power-down conditions

Applications

• Bus-oriented data storage and transfer systems
• Interfacing between low-voltage logic circuits and 5V TTL environments
• Byte-controlled data latching in digital communication interfaces
• High-speed memory address latching applications

Procurement Notes

Verify the manufacturer marking on the component body to confirm it originates from Fairchild Semiconductor or its successor entity, ON Semiconductor. Ensure the part number suffix matches 'WM' to confirm the specific SOIC-20 package variant. Check for RoHS compliance markings if environmental regulations apply to your assembly process. Confirm that the device is intended for commercial temperature ranges unless otherwise specified in the official datasheet.

Selection Notes

Select this component when designing systems requiring octal data storage with high-speed capabilities at low voltages. It is suitable for applications needing direct interfacing between 3.3V logic and 5V buses without additional level shifters. Consider the 3-STATE output feature for efficient bus sharing. Evaluate the power dissipation requirements against the thermal characteristics of the SOIC-20 package for your specific layout constraints.

Part Context

This device is part of the 74LVTH family, which bridges the gap between standard 5V TTL compatibility and modern low-voltage CMOS efficiency. The 'H' suffix typically denotes the inclusion of bushold inputs, although specific variants may differ. It serves as a critical component in mixed-voltage digital systems where reliable data retention and fast switching speeds are required within compact surface-mount packages.

Replacement Considerations

For equivalent functionality, consider the 74LVT273M or 74LVC273MTCX. Verify pinout compatibility and electrical specifications such as output drive current and propagation delay before substitution. Ensure that any replacement part supports the same voltage levels and package dimensions.