SN74LS166ADR

Shift Registers Overview

The SN74LS166ADR is an eight-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 supports a propagation delay of 25 ns. The device features asynchronous parallel data loading, serial input capability, and an asynchronous clear function. Packaged in a 16-pin SOIC surface-mount format, it functions as a unidirectional shift register with push-pull outputs. The component is rated for operation between 0°C and +70°C.

Shift Registers Feature Summary

• Supports asynchronous parallel data loading for immediate data entry
• Provides serial output capability through cascading connections
• Includes an asynchronous clear function to reset all stages

Shift Registers Applications

• Data storage applications requiring parallel-to-serial conversion
• Serial communication interfaces utilizing shift register logic
• Digital signal processing circuits requiring temporary data buffering

Shift Registers Procurement Notes

Verify the specific suffix 'ADR' indicates the tape-and-reel packaging configuration when sourcing components. Confirm that the LS logic family specifications align with the target circuit's power and speed requirements. Ensure the 16-SOIC package dimensions match the printed circuit board layout constraints. Validate that the operating temperature range meets the environmental conditions of the intended application environment.

Shift Registers Selection Notes

Select this component when an eight-bit shift register with parallel load functionality is required. The LS logic family offers standard performance suitable for general-purpose digital systems. Consider the 16-pin SOIC package for surface-mount assembly processes. Evaluate the 4.75 V to 5.25 V supply voltage requirement against available system power rails before integration into the design.

Shift Registers Part Context

This part belongs to the SN74LS166A family of eight-bit shift registers. It serves as a surface-mount variant of the through-hole SN74LS166N. The device provides parallel-in serial-out functionality with asynchronous clearing. It is designed for use in digital logic circuits requiring data shifting and storage capabilities within standard TTL voltage levels.

Shift Registers Replacement Considerations

SN74LS166ADRG4 is a verified replacement offering identical electrical characteristics and pinout compatibility.