54F402FMQB

Overview

The 54F402FMQB is a 16-bit parity generator and checker integrated circuit manufactured by National Semiconductor. It operates within a military temperature grade range of -55°C to 125°C. The device utilizes a 16-lead FlatPack surface-mount package. Electrical specifications include an output current capability of 2mA for both high and low states. This component belongs to the F/Fast series logic family, designed for CRC generation and parity checking applications in demanding environments.

Feature Summary

• Provides 16-bit parity generation and checking functionality
• Qualified for military temperature grade operation
• Utilizes Fast series logic technology for performance

Applications

• CRC generator circuits
• Parity checking systems
• Military electronic equipment

Procurement Notes

Verify the manufacturer designation as National Semiconductor or Texas Instruments, as acquisition rights transferred. Confirm the specific FMQB suffix indicates the 16-lead FlatPack package and military temperature rating. Ensure the part status is active if new production sourcing is required. Cross-reference datasheets to confirm pinout compatibility with existing designs.

Selection Notes

Select this component when 16-bit parallel parity processing is required in harsh thermal environments. The military grade specification ensures reliability across extreme temperature variations. The surface-mount FlatPack package facilitates integration into compact board layouts. Verify that the 2mA output drive strength meets the load requirements of the connected logic gates.

Part Context

This part is part of the 54F series, which denotes military-grade fast logic devices from National Semiconductor. The 54F402 specifically addresses data integrity through parity functions. Similar parts in the family include other parity generators or checkers with different bit widths or package options, such as the 54F412DMQB.

Replacement Considerations

Check for direct equivalents from Texas Instruments following the acquisition of National Semiconductor's logic business. Verify pin-to-pin compatibility with any alternative 16-bit parity ICs. Ensure the replacement maintains the same military temperature rating and FlatPack package dimensions.