DM74S280N

Overview

The DM74S280N is a 9-bit parity generator and checker manufactured by Fairchild Semiconductor. It utilizes Schottky-clamped TTL high-performance circuitry to facilitate odd or even parity generation and checking. The device operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range of 0°C to 70°C. It features a low-level output current of 20 mA and a high-level output current of -1 mA. The component is housed in a 14-pin DIP package.

Feature Summary

• Implements universal nine-bit parity generation and checking functions
• Utilizes Schottky-clamped TTL high-performance circuitry for reliability
• Provides distinct odd and even outputs to support various parity protocols

Applications

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

Procurement Notes

Verify the specific manufacturer origin, as Fairchild Semiconductor assets were acquired by onsemi. Confirm that the DM74S280N designation aligns with the intended vintage specifications. Ensure the package type matches the required through-hole mounting configuration for the target PCB design.

Selection Notes

Select this component when a dedicated 9-bit parity solution is required within standard TTL logic families. Consider the Schottky technology for improved switching performance compared to standard LS series devices. Verify compatibility with existing system voltage levels and thermal management requirements for the 0°C to 70°C operating range.

Part Context

This part belongs to the 74S (Schottky) logic family, known for high-speed operation. It serves as a specialized functional block for data validation within digital circuits. The 9-bit capacity allows for handling extended data words or control signals where parity verification is critical for system stability.

Replacement Considerations

• DM74S280