54F241LMQB

Overview

The 54F241LMQB is a high-speed F/FAST series bus driver manufactured by National Semiconductor. It features two non-inverting buffers with four-bit outputs per element, providing three-state output capability. The device is housed in a 20-lead Ceramic Quad Flatpack (LCCC) package measuring 8.89x8.89 mm. It operates within a temperature range of -55°C to 125°C and requires a 5 V power supply.

Feature Summary

• Provides dual four-bit non-inverting buffer functionality for signal driving applications
• Integrates three-state output control to facilitate efficient bus-oriented architectures
• Constructed with ceramic metal-sealed cofired packaging for enhanced environmental durability

Applications

• Bus-oriented system memory and address drivers
• Clock distribution circuits requiring high-speed signal integrity
• Industrial control systems operating in extreme temperature environments

Procurement Notes

Verify the specific manufacturer source, as National Semiconductor's logic assets were acquired by Texas Instruments. Confirm that the LCCC package designation matches the required footprint dimensions of 8.89x8.89 mm. Ensure the component meets the specified military-grade temperature range requirements for your application environment before finalizing procurement.

Selection Notes

Select this component when a robust, ceramic-packaged solution is required for high-speed digital interfaces. The F/FAST series offers superior switching speeds compared to standard TTL equivalents. Consider the three-state feature if bidirectional data flow or multiple driver sharing on a common bus line is necessary for the design architecture.

Part Context

This part belongs to the National Semiconductor F/FAST logic family, designed for high-performance digital systems. The LMQB suffix indicates a ceramic quad flatpack variant suitable for demanding operational conditions. As a legacy component from National Semiconductor, it represents a transition period in industrial logic IC manufacturing prior to full integration into broader semiconductor portfolios.

Replacement Considerations

Check for direct pin-compatible equivalents from Texas Instruments, which now holds the rights to the National Semiconductor logic portfolio. Verify that any substitute maintains the same 20-LCCC package dimensions and three-state output characteristics to ensure mechanical and electrical compatibility.