74FCT245SCX

Buffers, Drivers, Receivers, Transceivers Overview

The National Semiconductor 74FCT245SCX is an octal bus transceiver belonging to the FCT logic series. It features a 20-pin SOIC surface-mount package with TTL-compatible input and output levels. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum propagation delay of 7 ns at 5 V. It provides three-state outputs with a low-level output current capability of 64 mA and a high-level output current of -32 mA. The component functions as a non-inverting bidirectional data bus driver suitable for commercial temperature ranges.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bidirectional data bus transceiver architecture
• TTL-compatible input and output interface levels
• Three-state output configuration for bus isolation
• High drive capability with 64 mA low-level sink current

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus communication systems
• Memory-to-memory data transfer interfaces
• Microprocessor-based system interconnects
• General-purpose octal bus drivers in computing hardware

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer designation carefully, as Texas Instruments acquired National Semiconductor's logic business. Confirm that the specific part number corresponds to the original National Semiconductor manufacturing source rather than a TI rebranding or equivalent replacement. Ensure the suffix matches the required tape-and-reel packaging format for automated assembly processes.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal width is required for bidirectional data transfer between buses. The FCT series offers faster switching speeds compared to standard 74F logic while maintaining TTL compatibility. Verify that the system power supply remains strictly within the 4.75 V to 5.25 V range to ensure proper operation and avoid exceeding the absolute maximum ratings.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the broader 74FCT family of high-speed CMOS logic devices. It serves as a functional equivalent to other octal bus transceivers like the 74FCT245 variants from different manufacturers. The SCX suffix typically denotes the SOIC-20 package type combined with tape-and-reel shipping, distinguishing it from tube-packaged equivalents.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Cross-reference with CY74FCT245TSOC or CY74FCT245ATQCT for pin-compatible alternatives. Verify electrical specifications against 74FCT245 equivalents from Texas Instruments or Cypress Semiconductor to ensure signal integrity and timing requirements are met.