SN54LS166AJ

Shift Registers Overview

The SN54LS166AJ is a military-grade, 8-bit parallel-in/serial-out shift register from Texas Instruments' LS logic family. It features asynchronous clear and serial data input capabilities. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum propagation delay of 27 ns at nominal voltage. It is designed for operation across an extended temperature range of -55°C to +125°C. The component utilizes bipolar technology and is housed in a ceramic flatpack package suitable for high-reliability applications.

Shift Registers Feature Summary

• Military-grade reliability with extended temperature rating
• Asynchronous clear function for immediate reset
• Parallel-to-serial data conversion capability

Shift Registers Applications

• High-reliability aerospace systems
• Military communication equipment
• Industrial control units requiring wide temperature tolerance

Shift Registers Procurement Notes

Verify the specific suffix 'A' indicates the military grade variant and 'J' denotes the ceramic flatpack package. Confirm RoHS compliance status as military parts may differ from commercial standards. Ensure the supplier provides traceability documentation required for defense or aerospace procurement specifications.

Shift Registers Selection Notes

Select this component when military qualification and wide temperature operation are mandatory. Compare against SN74LS166 variants if commercial grade suffices. Verify package dimensions match the design footprint. Check availability of ceramic packages which may have longer lead times than plastic equivalents.

Shift Registers Part Context

This part belongs to the SN54LS166(A) family of 8-bit shift registers. The SN54 series denotes military specification components, distinguishing it from the commercial SN74 series. It shares functional compatibility with other LS logic devices but offers enhanced environmental robustness.

Shift Registers Replacement Considerations

SN54LS166J is the standard non-a version. SN74LS166AN or SN74LS166AD serve as commercial alternatives if military specs are not required. Verify pinout compatibility before substitution.