74LCX574MSAX

Overview

The 74LCX574MSAX is an octal D-type flip-flop manufactured by onsemi (formerly Fairchild Semiconductor). It operates within a supply voltage range of 2V to 3.6V and features positive-edge triggering with tri-state, non-inverting outputs. The device is housed in a 20-SSOP package with a width of 5.30mm. Key electrical specifications include a maximum propagation delay of 8.5ns at 3.3V with 50pF load, output drive currents of 24mA for both high and low states, and a static current of 10µA. It supports a clock frequency up to 150MHz and functions reliably across an operating temperature range of -40°C to 85°C.

Feature Summary

• Octal D-type flip-flop architecture with positive-edge triggering mechanism
• Tri-state outputs providing non-inverting data transmission capability
• Low input capacitance of 7pF for reduced signal loading effects
• Designed for low-voltage applications with 5V tolerant interface compatibility

Applications

• Parallel data storage and buffering in digital systems
• Interface bridging between low-voltage logic and 5V environments
• High-speed data routing and multiplexing circuits
• Memory address decoding and control logic implementation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix MSAX corresponds to tape-and-reel packaging requirements. Check for obsolescence status as this part may be discontinued; request last-time-buy information if applicable. Ensure compliance with RoHS and REACH regulations for intended market deployment. Validate pinout and electrical parameters against the official datasheet before integration.

Selection Notes

Select this component when designing systems requiring octal storage with tri-state outputs under 2V to 3.6V supply conditions. Consider its 8.5ns propagation delay for timing-critical paths operating below 150MHz. Evaluate the 20-SSOP package dimensions for PCB space constraints. Compare against newer equivalents if long-term availability is a primary concern, noting the potential end-of-life status.

Part Context

This device belongs to the 74LCX series of low-voltage CMOS logic ICs. It serves as a standard octal flip-flop solution for modern embedded designs. The part was originally produced by Fairchild Semiconductor and later continued by onsemi following corporate acquisitions. It represents a transition from older TTL-compatible logic families to advanced low-power CMOS technologies.

Replacement Considerations

Public confirmed substitutes include SN74LVC574ADBR from Texas Instruments. Other alternatives listed are 74LVC574APW,118 from Nexperia USA Inc., CLVC374AQPWRG4Q1 from Texas Instruments, and unspecified TI options. Verify pin compatibility and electrical specifications before substitution.