QS74FCT2245TQ

Buffers, Drivers, Receivers, Transceivers Overview

The QS74FCT2245TQ is an octal bus transceiver from the FCT logic series manufactured by Quality Semiconductor. It features eight non-inverting channels with three-state outputs, designed for high-speed data transfer applications. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports TTL input and output levels. It exhibits a propagation delay of 4.6 ns, with low-level output current capability of 12 mA and high-level output current of -15 mA. The component functions across an industrial temperature range from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight independent bidirectional data paths
• Three-state outputs enable direct connection to system buses without additional drivers
• Non-inverting signal polarity maintains logical integrity during transmission
• Compatible with TTL logic levels for broad interface interoperability

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed memory modules requiring efficient data routing
• Microprocessor-based systems utilizing parallel bus architectures
• Control circuits managing multiple peripheral devices simultaneously
• Industrial automation equipment demanding reliable signal isolation

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer designation as Quality Semiconductor rather than Texas Instruments, despite similar part numbering conventions in the FCT family. Confirm the specific package type matches your PCB footprint requirements, as variations exist between plastic and ceramic carriers. Ensure compatibility with existing board designs regarding pinout assignments and electrical characteristics before finalizing procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring robust octal data buffering with defined drive strengths. The FCT series offers improved switching speeds compared to standard LS logic while maintaining CMOS power efficiency. Consider the operating temperature range if deploying in harsh environments. Validate that the three-state control signals align with your system's timing constraints to prevent bus contention issues.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the FCT (Fast CMOS Technology) family, which bridges the performance gap between standard CMOS and bipolar logic families. It is engineered for applications needing faster propagation delays than conventional CMOS parts while avoiding the higher power consumption of bipolar technologies. The octal architecture allows for compact design solutions in complex digital systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The CY74FCT2245ATPC from Texas Instruments serves as a functional substitute within the same logic family. Verify pin compatibility and electrical specifications before swapping components. Other variants like the QS74FCT2245TQ may share identical internal circuitry but differ in packaging or manufacturing origin.