74VHCT574AMTCX

Overview

The 74VHCT574AMTCX is an octal D-type flip-flop with 3-state outputs, fabricated using advanced high-speed CMOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 10.4 ns. The device supports single-ended inputs and outputs, with high-level output current of -8 mA and low-level output current of 8 mA. It is housed in a 20-TSSOP package (4.40 mm width) and functions across an operating temperature range of -40°C to +85°C.

Feature Summary

• Octal D-type flip-flop architecture with positive edge triggering
• Three-state outputs for bus-oriented applications
• CMOS fabrication ensuring high-speed operation

Applications

• Bus-oriented memory register designs
• Clocked data storage circuits
• Parallel-to-serial conversion modules

Procurement Notes

Verify the manufacturer designation, as this component is associated with both Fairchild Semiconductor and onsemi due to corporate history. Confirm the specific datasheet version matches the required electrical characteristics. Ensure the TSSOP-20 package dimensions align with PCB footprint requirements. Check RoHS compliance status for environmental regulations. Validate the operating temperature range against system thermal constraints.

Selection Notes

Select this component when an octal D-type flip-flop with three-state outputs is required for high-speed digital logic applications. It is suitable for systems operating at 5 V with tight timing constraints due to its 10.4 ns propagation delay. Consider the TSSOP-20 package for surface-mount assembly needs. Ensure compatibility with VHCT logic levels for interfacing with other CMOS devices.

Part Context

This part belongs to the 74VHCT series, which combines the speed of VHCT logic with HCT-compatible input thresholds. It serves as a standard solution for parallel data latching in digital systems. The 74VHCT574A variant specifically provides eight independent D-type flip-flops with tri-state control, facilitating efficient data management in microprocessor-based architectures.

Replacement Considerations

The MM74HCT574MTC is a comparable octal D-type flip-flop in a TSSOP-20 package. Verify that the HCT logic family input thresholds are compatible with the existing circuit design before substitution.