74LVX574SJ

Overview

The Fairchild Semiconductor 74LVX574SJ 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 3.6V, supporting low-voltage applications. The device provides single-ended inputs and outputs with non-inverting logic polarity. It is housed in a 20-SOP surface-mount package with a width of 5.30mm. The component exhibits a maximum propagation delay of 18ns and supports a clock frequency up to 75MHz. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Octal D-type flip-flop architecture with positive-edge triggering for synchronized data storage
• Three-state output capability allowing bus line driving and isolation
• Low-voltage operation compatible with 2V to 3.6V power supplies
• Industrial-grade thermal stability suitable for demanding environments

Applications

• Parallel-to-serial data conversion circuits
• General-purpose register implementations in digital systems
• Bus driver applications requiring tri-state control
• Memory interface buffering and latching

Procurement Notes

This component is officially obsolete and no longer manufactured by the original producer. Verification of availability requires checking secondary market distributors or authorized surplus channels. Buyers must confirm the authenticity of surviving stock through official documentation review. Cross-referencing with current replacement parts is recommended for new designs. Ensure that any sourced units match the original pinout and electrical specifications to maintain system compatibility.

Selection Notes

Designers should evaluate the transition to active replacement components due to the discontinued status of this specific part number. Compatibility checks must verify voltage levels, package dimensions, and switching speeds against target system requirements. Alternative devices from other manufacturers may offer similar functionality but require thorough validation of timing parameters and output drive capabilities before integration into existing schematics.

Part Context

The 74LVX574SJ belongs to the LVX logic family, characterized by low-voltage CMOS technology. This series is designed for applications requiring reduced power consumption while maintaining high-speed performance. The octal configuration allows handling eight bits of data simultaneously, making it efficient for wide-bus architectures. Its surface-mount packaging facilitates automated assembly processes in modern electronics manufacturing.

Replacement Considerations

Public confirmed substitute part numbers include SN74AHC574NSR and SN74LV574ADW.