74VHC574FT

Overview

The Toshiba 74VHC574FT is an octal D-type flip-flop with 3-state outputs belonging to the VHC CMOS logic series. It features a TSSOP-20 surface-mount package and operates within a supply voltage range of 2 V to 5.5 V. The device supports a maximum clock frequency of 180 MHz, with a propagation delay of 7.1 ns at 5 V. It provides output drive capabilities of -8 mA for high level and 8 mA for low level. Operating temperatures range from -40°C to +85°C.

Feature Summary

• Octal D-type flip-flop architecture with non-inverting outputs
• High-speed operation up to 180 MHz clock frequency
• Three-state output control via dedicated enable input
• Wide operating voltage range supporting 2 V to 5.5 V systems

Applications

• Parallel data storage in digital signal processing systems
• Bus interface circuits requiring tri-state isolation
• High-speed memory buffer applications
• Clock-controlled data latching in microcontroller interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific ordering suffixes match project requirements. Ensure ESD protection protocols are followed during handling due to CMOS sensitivity. Cross-reference datasheet revisions to confirm parameter consistency before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring octal data storage with high-speed performance under standard CMOS logic levels. The VHC series offers speed comparable to LSTTL while maintaining low power consumption. Consider the TSSOP-20 package constraints for PCB layout and thermal management. Evaluate the 2 V minimum supply requirement against system power rails to ensure reliable operation across the full temperature range.

Part Context

This part belongs to Toshiba's 74VHC family of high-speed CMOS logic devices. The 74VHC574 specifically implements an octal D-type flip-flop configuration. It is designed for general-purpose digital logic applications where fast switching speeds and low power dissipation are critical requirements for modern electronic systems.

Replacement Considerations

Direct pin-compatible alternatives include MC74VHC574DWR2G from onsemi. Verify electrical parameters such as propagation delay and output current drive capabilities match original design specifications before substitution.