54F253FMQB

Overview

The 54F253FMQB is a dual 4-bit multiplexer belonging to the F/FAST series, manufactured by National Semiconductor. It features tri-state outputs and operates within a 5 V power supply range. The component utilizes ceramic flatpack packaging with 16 pins. It supports an operating temperature range from -55 °C to 125 °C and has a load capacitance of 50 pF.

Feature Summary

• Dual 4-bit multiplexing capability
• Tri-state output configuration
• High-speed digital system operation

Applications

• High-speed digital systems
• Data routing applications
• Signal selection circuits

Procurement Notes

Verify the manufacturer origin, as National Semiconductor assets are managed by Texas Instruments. Confirm the specific package variant matches the required footprint. Check for RoHS compliance status if environmental regulations apply to the end product. Ensure the ceramic flatpack package integrity is maintained during handling.

Selection Notes

Select this component when dual independent 4-to-1 signal paths are required in high-speed environments. The F/FAST series offers speed advantages over standard logic families. Verify that the 5 V supply voltage aligns with the system design. Consider the ceramic package for thermal stability in extreme temperature ranges.

Part Context

This part belongs to the National Semiconductor F/FAST logic family, designed for fast switching speeds. The 54F prefix indicates military-grade temperature range capabilities. The FMQB suffix typically denotes the ceramic flatpack package type. This series was widely used in industrial and aerospace digital logic applications before transitioning to CMOS technologies.

Replacement Considerations

Check for direct pin-compatible equivalents from Texas Instruments or other manufacturers offering F/FAST series components. Verify that any substitute maintains the dual 4-bit multiplexer function and tri-state output characteristics. Ensure the replacement supports the same 5 V operating voltage and temperature range.