74F280PC

Overview

The Fairchild Semiconductor 74F280PC is a high-speed parity generator and checker integrated circuit belonging to the 74F logic family. It accepts nine bits of input data to detect whether an odd or even number of ones are present, providing corresponding outputs for odd and even parity conditions. The device operates within a supply voltage range of 4.5 V to 5.5 V and features a propagation delay of 10 ns. It is housed in a standard 14-pin Dual In-line Package (DIP) suitable for through-hole mounting.

Feature Summary

• Performs high-speed generation and checking of parity for nine-bit data inputs
• Provides distinct output signals indicating odd or even parity status
• Compatible with standard 5 V TTL logic levels

Applications

• Data transmission systems requiring error detection
• Memory modules utilizing parity checking
• Digital communication interfaces

Procurement Notes

Verify the package type matches your board design requirements, as this specific part number denotes a 14-pin DIP configuration. Confirm that the manufacturer source is authorized to ensure component authenticity. Check for any superseded part numbers from the current owner of the Fairchild semiconductor portfolio before finalizing procurement decisions.

Selection Notes

Select this component when a dedicated nine-bit parity solution is required within a 74F speed class. Ensure the application environment supports the specified 4.5 V to 5.5 V operating voltage range. Consider the physical footprint constraints of the 14-pin DIP package during the initial schematic capture phase to avoid layout conflicts.

Part Context

This component belongs to the widely adopted 74-series logic family, specifically the F variant known for faster switching speeds compared to standard LS types. Parity generators like the 74F280 are essential for maintaining data integrity in digital systems by identifying single-bit errors during transmission or storage operations.

Replacement Considerations

The SN74F280BN from Texas Instruments is a documented functional equivalent. Verify pin compatibility and electrical specifications against official datasheets before substitution.