QS74FCT244TSO

Buffers, Drivers, Receivers, Transceivers Overview

The QS74FCT244TSO is a bus driver from the FCT series manufactured by Quality Semiconductor Inc. It features two functions, each driving four bits with true output polarity. The device utilizes CMOS technology and is housed in a 20-pin small outline package (SOP). It operates within an industrial temperature range of -40°C to +85°C and supports a supply voltage between 4.75 V and 5.25 V, with a nominal rating of 5 V. The component has a propagation delay of 9 ns and includes three enable inputs for control.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides dual 4-bit bus driving capability with true output polarity
• Incorporates three enable inputs for flexible system control
• Utilizes CMOS technology for low static power consumption
• Features inverted output options within the broader FCT series architecture

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory drivers
• Address bus drivers
• Clock drivers
• Buffering applications requiring high-speed data transfer

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific manufacturer designation as Quality Semiconductor Inc, noting that similar part numbers may be produced by other vendors such as IDT or Cypress. Confirm the package type corresponds to the 20-pin SOP variant. Ensure the operating temperature range meets industrial requirements of -40°C to +85°C. Check for lead-free compliance status if required by assembly specifications. Validate pin compatibility with existing bipolar Fast Series designs if replacing legacy components.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a dual 4-bit buffer with true output is required for high-speed digital interfaces. The CMOS construction offers lower power consumption compared to bipolar alternatives while maintaining speed. Consider the 9 ns propagation delay for timing-critical paths. The industrial temperature range makes it suitable for harsh environments. Verify that the 3-state output characteristics align with the bus topology requirements.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the FCT (Fast CMOS) logic family, designed to replace older bipolar TTL devices with faster switching speeds and reduced power usage. The QS74FCT244TSO specifically addresses needs for bidirectional data flow buffering in computer and communication systems. Its pinout is often compatible with standard 74FCT equivalents, facilitating drop-in replacements in existing PCB layouts without redesign.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Cross-reference with PI74FCT244TSE or QS74FCT244TSOX for functional equivalents. Verify pin compatibility with Texas Instruments CY74FCT244 variants. Ensure electrical parameters match before substitution.