74VHC574MTC

Overview

The Fairchild Semiconductor 74VHC574MTC is an octal D-type flip-flop featuring positive-edge triggering and three-state outputs. It operates within a supply voltage range of 2V to 5.5V, supporting high-speed digital logic applications. The device utilizes a 20-TSSOP surface-mount package with a width of 4.40mm. Key electrical characteristics include a maximum propagation delay of 10.6ns at 5V with 50pF load, a clock frequency capability of 115 MHz, and output drive currents of 8mA for both high and low states. Static current consumption is specified at 4 µA.

Feature Summary

• Octal D-type flip-flop architecture with positive-edge triggering mechanism
• Three-state non-inverting outputs for bus-oriented system connections
• High-speed CMOS technology enabling operation up to 115 MHz clock frequencies
• Low static power consumption suitable for battery-powered or energy-efficient designs

Applications

• Register files in microprocessor-based systems
• Shift registers for data storage and transfer operations
• Bus-oriented memory mapping architectures
• Parallel-to-serial data conversion circuits

Procurement Notes

Verify the manufacturer designation carefully, as the component is historically associated with Fairchild Semiconductor but may now be produced under onsemi branding following corporate acquisitions. Confirm that the specific part number matches the required 20-TSSOP package dimensions and pinout configuration. Ensure compliance with RoHS3 standards if environmental regulations apply to your manufacturing process. Cross-reference datasheet revisions to confirm any changes in electrical parameters or recommended operating conditions before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring eight-bit parallel data storage with synchronous control. The 74VHC574MTC is appropriate for applications demanding high switching speeds and low power dissipation. Consider the 2V to 5.5V supply range compatibility with your system's logic levels. Evaluate the 10.6ns propagation delay against your timing constraints to ensure signal integrity. The three-state output feature allows direct connection to shared data buses without additional buffering requirements.

Part Context

This component belongs to the 74VHC series of high-speed CMOS logic devices, designed for performance-critical digital applications. It serves as a fundamental building block for sequential logic circuits within larger integrated systems. The TSSOP packaging facilitates automated surface-mount assembly processes, supporting modern electronics manufacturing standards. As an octal flip-flop, it provides efficient data handling capabilities compared to single-bit alternatives, reducing board space and interconnection complexity in dense circuit layouts.

Replacement Considerations

MC74VHC574DWR2G: An alternative variant from the same manufacturer family offering identical logical functionality in a different SOIC-20 package format.