QS74FCT1280TQ

Overview

The QS74FCT1280TQ is a parity generator and checker integrated circuit manufactured by Quality Semiconductor. It supports 9-bit data processing, enabling the generation or verification of parity bits for data integrity checks in digital systems. The device operates within a supply voltage range of 4.75 V to 5.25 V, with a nominal voltage of 5 V. It is designed for industrial temperature applications, functioning reliably between -40 °C and +85 °C. The component utilizes CMOS technology and features inverted outputs. It is housed in a 16-pin Plastic Dual In-line Package (PDIP) with through-hole terminals. The propagation delay is specified at 9 ns.

Feature Summary

• Performs 9-bit parity generation and checking functions
• Features inverted output polarity
• Operates within industrial temperature range
• Utilizes CMOS technology

Applications

• Data bus integrity monitoring
• Memory system error detection
• Digital communication interface validation

Procurement Notes

Verify the specific package type and pin configuration against your PCB footprint requirements before procurement. Confirm that the supplier provides genuine Quality Semiconductor components to ensure reliability. Check for any specific handling instructions related to the PDIP package. Ensure compatibility with your system's voltage levels and temperature constraints. Review the datasheet for detailed electrical characteristics and timing diagrams.

Selection Notes

Select this component when 9-bit parity checking is required for data integrity. Consider the PDIP package if through-hole mounting is preferred. Evaluate the 9 ns propagation delay against your system speed requirements. Ensure the operating temperature range meets your environmental conditions. Compare with other FCT series devices if different bit widths or package types are needed.

Part Context

This part belongs to the FCT logic series, which combines Fast CMOS technology with TTL-compatible inputs. The series is designed for high-speed digital applications requiring low power consumption and robust noise immunity. The QS prefix indicates it is manufactured by Quality Semiconductor. This specific model focuses on parity functions, distinguishing it from standard logic gates or flip-flops within the same family.

Replacement Considerations

Check for direct substitutes from other manufacturers offering identical 9-bit parity functionality in a PDIP-16 package. Verify pin-to-pin compatibility and electrical specifications such as voltage range and propagation delay. Ensure the replacement part maintains the inverted output characteristic if critical to the design.