74VHC273TTR

Overview

The 74VHC273TTR is an octal D-type flip-flop manufactured by STMicroelectronics, featuring a positive-edge trigger and master reset functionality. It operates within a supply voltage range of 2V to 5.5V and supports surface-mount installation in a 20-SOIC package. The device provides non-inverting outputs with a maximum propagation delay of 11ns at 5V with 50pF load, ensuring high-speed performance up to 110 MHz clock frequency. Static current consumption is limited to 4 µA maximum, while output drive capability reaches 8mA for both high and low states across the operating temperature range of -55°C to 125°C.

Feature Summary

• Octal D-type flip-flop architecture with positive-edge triggering
• Master reset function for synchronous data control
• High-speed operation supporting clock frequencies up to 110 MHz
• Wide supply voltage compatibility from 2V to 5.5V

Applications

• Parallel-to-serial data conversion circuits
• Shift register implementations in digital systems
• Memory buffer stages requiring high-speed latching
• Timing synchronization logic in embedded controllers

Procurement Notes

Verify component authenticity through authorized distribution channels due to discontinued status. Confirm package integrity and lead condition upon receipt. Cross-reference datasheet revisions to ensure parameter alignment with design requirements. Validate RoHS compliance documentation for environmental regulations. Inspect for physical damage before integration into PCB assemblies.

Selection Notes

Evaluate supply voltage compatibility against system power rails to ensure operation within the 2V to 5.5V range. Assess propagation delay specifications relative to target clock speeds to prevent timing violations. Consider thermal management requirements given the extended operating temperature range. Verify pinout compatibility with existing footprint designs. Review static current limits for battery-powered applications.

Part Context

This component belongs to the 74VHC series of high-speed CMOS logic devices, offering improved performance over standard 74HC counterparts. It serves as a digital storage element within complex logic networks, providing reliable data retention and transfer capabilities. The octal configuration allows efficient handling of multi-bit data streams in parallel architectures.

Replacement Considerations

Public confirmed substitute part numbers include 74AHC273D,118 from Nexperia USA Inc. and CD74HCT273E from Texas Instruments. These alternatives offer similar functional characteristics but may differ in electrical parameters or packaging. Verify pin compatibility and voltage thresholds before substitution.