74FCT245ASC

Buffers, Drivers, Receivers, Transceivers Overview

The National Semiconductor 74FCT245ASC is an octal bus transceiver belonging to the FCT logic series. It features a 20-pin DSBGA package and supports bidirectional data transfer with non-inverting true output polarity. The device operates within a supply voltage range of 4.75 V to 5.25 V and maintains TTL-compatible input and output levels. It provides three-state outputs with a low-level output current of 64 mA and a high-level output current of -32 mA. The propagation delay is specified at 7 ns, ensuring efficient signal transmission for high-speed digital applications.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus transceiver architecture supporting bidirectional data flow
• TTL-compatible input and output voltage levels for system integration
• Three-state outputs enabling multiple driver connections on shared buses
• Non-inverting true output polarity preserving signal directionality

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed data bus architectures requiring bidirectional transfer
• Memory interface circuits utilizing standard logic families
• Digital control systems managing parallel data streams

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm the specific package variant matches design requirements. Check RoHS compliance status as indicated in official documentation. Ensure storage conditions align with semiconductor handling standards to prevent damage. Review datasheet revisions for any updates regarding electrical characteristics or pin configurations before finalizing procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring octal bidirectional data transfer with TTL compatibility. The FCT series offers faster switching speeds compared to standard LS logic. Consider the 20-pin DSBGA package constraints for PCB layout and thermal management. Evaluate the 7 ns propagation delay against system timing requirements. Ensure power supply stability within the 4.75 V to 5.25 V range for optimal performance.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the broader 74FCT245 family of bus transceivers manufactured by various vendors including Texas Instruments and IDT. While functionally similar, differences exist in packaging, operating temperature ranges, and specific electrical parameters across manufacturers. The National Semiconductor version specifically utilizes a DSBGA package, distinguishing it from SOIC or QCC variants found in other brands' offerings.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Cross-reference with CY74FCT245TSOC for equivalent functionality in SOIC-20 packaging. Verify compatibility with 74FCT245FC for ceramic flatpack applications. Ensure substitute parts maintain identical voltage ranges and drive currents. Confirm package dimensions match existing board footprints if direct replacement is required.