74LVQ273SC

Overview

The Fairchild Semiconductor 74LVQ273SC is an octal D-type flip-flop featuring positive edge triggering and true outputs. It operates within a supply voltage range of 2V to 3.6V, supporting high-speed data storage with a maximum clock frequency of 90MHz. The device exhibits a typical propagation delay of 8.5ns at 3.3V with a 50pF load. It provides balanced output drive capabilities of 12mA for both high and low states. Packaged in a 20-lead LSSOP (QSOP) format, it functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Octal configuration with eight individual D-type inputs and corresponding Q outputs
• Positive edge-triggered operation synchronized by a common buffered clock input
• Asynchronous master reset function to clear all flip-flops simultaneously
• Non-inverted true outputs providing direct logic state representation

Applications

• Data storage registers in digital systems
• Buffering signals between microprocessors and memory components
• Parallel-to-serial data conversion circuits
• Timing synchronization in high-speed logic interfaces

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure the component matches the required voltage and temperature ratings for the target application environment. Cross-reference the part number with current availability status as legacy series may have limited production runs.

Selection Notes

Select this component when an octal D-type flip-flop with LVQ series performance is required. It is suitable for applications needing 2V to 3.6V operation and 90MHz clock speeds. Consider the 20-LSSOP package constraints and ensure thermal management aligns with the -40°C to +85°C operating range requirements.

Part Context

This component belongs to the 74LVQ series, designed for low-voltage CMOS applications. It offers improved speed and power efficiency compared to standard LV families. The 74LVQ273 variant specifically provides octal storage with asynchronous reset, distinguishing it from transparent latches or tri-state output versions within the same logical family.

Replacement Considerations

Compatible substitutes include the ON Semiconductor 74LVQ273QSCX and Texas Instruments variants within the LVQ series. Verify pinout compatibility and electrical parameters such as propagation delay and output drive current before substitution.