74F280SCX

Overview

The Fairchild Semiconductor 74F280SCX is a 9-bit parity generator and checker integrated circuit belonging to the F/FAST logic series. It is housed in a 14-pin SOIC package (M20D). The device operates within a supply voltage range of 4.5 V to 5.5 V, with a maximum operating temperature of 70 °C. It features TTL-compatible inputs and provides both odd and even parity outputs. The component is RoHS compliant and lead-free.

Feature Summary

• Performs 9-bit parity generation and checking functions
• Provides separate odd and even parity output pins
• Features buffered positive edge-triggered clock input for synchronous operation
• Includes TTL-compatible inputs for direct interfacing with TTL logic systems

Applications

• Data transmission error detection circuits
• Memory system parity checking modules
• Digital communication interface protocols requiring parity verification
• Computer bus architecture integrity monitoring

Procurement Notes

Verify the specific suffix 'SCX' against current manufacturer documentation to confirm package type and compliance status. Note that this part number may be discontinued or obsolete; check for active lifecycle status before procurement. Ensure the receiving facility accepts SOIC-14 packages and validates RoHS compliance requirements for the intended application environment.

Selection Notes

Select this component when a dedicated 9-bit parity solution is required within the F/FAST logic family. It is suitable for designs needing fast propagation delays and TTL compatibility. Consider alternative packages if surface mount constraints differ, or evaluate broader logic families if higher fan-out or different voltage levels are necessary for the specific system architecture.

Part Context

This component is part of the standard 74xx logic family, specifically the high-speed F/FAST sub-series. It serves as a specialized function block for digital data integrity. The SCX designation indicates a specific tape-and-reel or bulk packaging format within Fairchild's SOIC product line, distinct from other pin-compatible variants like SJ or BN.

Replacement Considerations

Direct substitutes include the SN74F280BN from Texas Instruments. Other compatible options within the same logic family should be verified for pinout and electrical specification equivalence. Check for updated manufacturing sources if the original Fairchild part is no longer in production.