54F323DMQB

Overview

The 54F323DMQB is an 8-bit parallel-in/parallel-out shift register manufactured by National Semiconductor. It features a 20-pin CDIP package and operates within the standard military temperature range defined by the 54-series designation. The device supports serial input for data shifting and provides parallel output capabilities, making it suitable for applications requiring data conversion between serial and parallel formats in digital logic systems.

Feature Summary

• Supports parallel-in and parallel-out data transfer modes
• Compatible with standard TTL logic families
• Designed for military-grade environmental reliability

Applications

• Data storage in digital communication systems
• Serial-to-parallel data conversion interfaces
• Parallel-to-serial data conversion circuits

Procurement Notes

Verify component authenticity through authorized distributors or certified suppliers due to obsolete status. Confirm package integrity and pin compatibility before integration. Check for RoHS compliance requirements if applicable to modern assembly processes. Ensure proper handling of static-sensitive components during installation.

Selection Notes

Select this component when military-grade reliability and TTL compatibility are required for 8-bit shift register functions. Consider availability constraints given its obsolete status. Evaluate alternative sources such as Rochester Electronics for stock verification. Assess mechanical fit within existing 20-pin CDIP footprints.

Part Context

This part belongs to the National Semiconductor 54F series of high-speed TTL logic devices. The 54F323 specifically implements an 8-bit shift register function. Texas Instruments acquired National Semiconductor, affecting supply chain dynamics. The DM prefix indicates military temperature range qualification.

Replacement Considerations

Check Fairchild Semiconductor equivalents such as the 74F323PC for potential functional substitution. Verify pinout compatibility and electrical specifications against original datasheets. Consult manufacturer documentation for cross-reference lists to identify approved replacements.