SN74LS166ANSR

Shift Registers Overview

The SN74LS166ANSR is an 8-bit parallel-in serial-out shift register from the Texas Instruments SN74LS166A series. It operates within a supply voltage range of 4.75 V to 5.25 V and features asynchronous reset functionality. The device utilizes positive-edge triggering for clock operations and includes a parallel enable input for data loading control. It is housed in a 16-pin SOIC package with a propagation delay of 25 ns, designed for surface-mount installation.

Shift Registers Feature Summary

• Supports parallel-to-serial data conversion with dedicated parallel enable input
• Features asynchronous reset capability for immediate state clearing
• Utilizes positive-edge triggered clocking mechanism

Shift Registers Applications

• Serial communication interface data buffering
• Parallel-to-serial data conversion circuits
• Digital logic control systems requiring shift register functions

Shift Registers Procurement Notes

Verify the specific suffix 'ANSR' against the manufacturer's official documentation to confirm the exact package variant and reel specifications. Ensure compatibility with standard 5V logic levels and check RoHS compliance status through current datasheets before integration into final designs.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with parallel load capability is required in a surface-mount application. The LS logic family offers moderate speed suitable for general-purpose digital applications. Confirm that the 16-pin SOIC footprint matches the PCB layout requirements and that the operating temperature range meets environmental conditions.

Shift Registers Part Context

This part belongs to the SN74LS166A family of counters and shift registers. It is functionally compatible with other industry-standard 8-bit shift registers but is distinguished by its specific bipolar LS logic characteristics and packaging options provided by Texas Instruments.

Shift Registers Replacement Considerations

SN74LS166ADRG4 is a verified substitute offering identical electrical performance and pinout configuration.