CD74HC166M

Shift Registers Overview

The CD74HC166M is an 8-bit parallel-in serial-out shift register manufactured by Texas Instruments. It belongs to the 74HC logic family and utilizes high-speed CMOS technology. The device operates within a supply voltage range of 2V to 6V and supports a clock frequency up to 35MHz. It features asynchronous clear, serial data inputs, and push-pull outputs. The component is housed in a 16-SOIC surface-mount package and functions across an extended temperature range from -55°C to +125°C.

Shift Registers Feature Summary

• Supports parallel-to-serial data conversion with dedicated parallel input lines
• Features asynchronous clear functionality for immediate output reset
• Provides push-pull outputs for robust signal driving capability
• Operates on high-speed CMOS technology compatible with standard logic families

Shift Registers Applications

• Data acquisition systems requiring serial transmission of parallel sensor data
• Input expansion modules for microcontroller-based embedded designs
• Digital communication interfaces handling serial data streams
• General-purpose digital logic circuits requiring bit shifting operations

Shift Registers Procurement Notes

Verify the specific manufacturer part number against official Texas Instruments documentation to confirm pinout compatibility and electrical specifications. Ensure the selected variant matches the required operating temperature range and voltage levels for the target application environment before finalizing procurement decisions.

Shift Registers Selection Notes

Select this component when an 8-bit parallel-to-serial converter is required in a surface-mount design. The HC series offers broad voltage compatibility and high switching speeds suitable for general digital applications. Confirm that the SOIC package dimensions fit the available PCB footprint and that the logic family aligns with the system's existing voltage standards.

Shift Registers Part Context

This component is part of the Texas Instruments 74HC series of high-speed CMOS logic devices. The 74HC166 specifically provides eight-bit shift register functionality with parallel loading capabilities. It serves as a fundamental building block for digital systems needing data format conversion between parallel and serial domains within integrated circuit designs.

Shift Registers Replacement Considerations

The CD74HC166MT is listed as obsolete with the 74HC166D,653 from Nexperia USA Inc. identified as a similar substitute. Verify functional equivalence and pin compatibility before substituting components in existing designs.