74F899SCX

Overview

The Fairchild Semiconductor 74F899SCX is a high-speed, low-power octal D-type flip-flop featuring buffered positive edge-triggered clock and 3-STATE outputs. It belongs to the ACT series, designed for bus-oriented applications with TTL-compatible inputs. The device utilizes CMOS technology in a PDSO20 package (SOIC-20) compliant with MS-013AC standards. It includes separate D-type inputs for each flip-flop and common Output Enable (OE) controls. The component is lead-free and RoHS compliant, ensuring environmental safety while maintaining high performance in digital logic circuits.

Feature Summary

• Octal D-type flip-flop architecture with 3-STATE outputs for efficient bus management
• Buffered positive edge-triggered clock input ensures stable data capture
• TTL-compatible inputs allow direct interfacing with standard logic families
• Low power consumption combined with high-speed operation capabilities

Applications

• Bus-oriented data storage systems requiring tri-state control
• High-speed digital logic circuits utilizing octal data latching
• Systems integrating TTL-compatible interfaces with CMOS logic cores

Procurement Notes

Verify the specific suffix 'SCX' against the manufacturer's current ordering guide to confirm package type and tape-and-reel specifications. Ensure the component matches the required RoHS compliance status for your assembly process. Cross-reference the pinout diagram with your PCB footprint design to avoid orientation errors during placement. Confirm that the voltage levels align with your system's operating requirements before finalizing procurement.

Selection Notes

Select this component when an octal configuration with tri-state outputs is required for bus applications. It serves as a suitable alternative to similar 74ACT374 devices if specific packaging or sourcing constraints exist. Consider the ACT series characteristics for balanced speed and power dissipation. Verify compatibility with existing clock and enable signal structures in the design.

Part Context

This part belongs to the 74ACT family of high-speed CMOS logic devices produced by Fairchild Semiconductor. The family is characterized by TTL-compatible inputs and reduced I/O impedance for improved drive capability. The 74F899 designation typically refers to an octal D-type flip-flop variant within this logical grouping, sharing functional similarities with other octal registers like the 74ACT374.

Replacement Considerations

The 74ACT374SC is a functionally equivalent octal D-type flip-flop with 3-STATE outputs from the same manufacturer. Other compatible alternatives include the 74ACT374SJ or 74ACT374MTC depending on the required package style. Verify pin-to-pin compatibility and electrical parameters before substitution.