74VHC574N

Overview

The Fairchild Semiconductor 74VHC574N is an octal D-type flip-flop with 3-state outputs, part of the VHC series. It features a single clock input (CP) and power-down protection on all inputs. The device operates within a voltage range of 2V to 5.5V and supports a maximum operating temperature of +85°C. It utilizes advanced CMOS technology for high-speed operation similar to equivalent Bipolar Schottky TTL while maintaining low power dissipation.

Feature Summary

• Advanced high-speed CMOS octal flip-flop with 3-state outputs
• Power-down protection provided on all inputs
• Pin and function compatible with 74HC374

Applications

• High-speed data storage
• Bus driver applications
• Parallel-to-serial conversion

Procurement Notes

Verify the specific package suffix against the datasheet, as 'N' typically denotes a DIP package but official documentation should be consulted for exact ordering information. Confirm RoHS compliance status and check for any lead-free manufacturing updates or environmental certifications required by your supply chain standards before finalizing procurement.

Selection Notes

Select this component when high-speed performance comparable to bipolar logic is required alongside CMOS low power consumption. Ensure the application voltage falls within the 2V to 5.5V range. Verify that the 3-state output capability meets the bus architecture requirements and that the -40°C to +85°C temperature range suits the operational environment.

Part Context

This component belongs to the 74VHC family, which bridges the performance gap between standard HC logic and faster F/AHCT families. It serves as a direct pin-compatible upgrade for designs previously using 74HC374, offering improved switching speeds without requiring PCB layout changes. The VHC series is designed for applications demanding both speed and energy efficiency.

Replacement Considerations

The MM74HC574WMX from onsemi is a documented alternative in the same logic family. Verify package compatibility and electrical parameter alignment before substitution.