CD74HC194M

Shift Registers Overview

The CD74HC194M is a 4-bit universal bidirectional shift register manufactured by Harris Corporation, belonging to the 74HC series. It features parallel-in and parallel-out capabilities with serial input options for both left and right shifting directions. The device operates on a single supply voltage ranging from 2V to 6V and utilizes CMOS technology. It is housed in a 16-pin SOIC package designed for surface-mount installation. The component supports a wide operating temperature range from -55°C to 125°C and includes asynchronous reset functionality.

Shift Registers Feature Summary

• Supports bidirectional shifting operations controlled by mode selection inputs
• Provides parallel data loading capability alongside serial shifting functions
• Features asynchronous clear input for immediate output resetting

Shift Registers Applications

• Data storage and buffering in digital logic circuits
• Serial-to-parallel and parallel-to-serial data conversion
• Implementation of arithmetic logic units requiring shift operations

Shift Registers Procurement Notes

Verify the manufacturer designation as Harris Corporation rather than Texas Instruments, as legacy branding may appear on older stock or specific distributor listings. Confirm the suffix 'M' corresponds to the SOIC package variant. Ensure compatibility with existing 74HC logic families regarding voltage levels and pin configurations before integration into new designs.

Shift Registers Selection Notes

Select this component when bidirectional shifting and parallel loading are required within a standard 74HC logic family framework. Consider the 16-SOIC package for surface-mount assembly requirements. Evaluate the 2V to 6V supply range against system power constraints. Verify that the -55°C to 125°C temperature rating meets environmental specifications for the intended application environment.

Shift Registers Part Context

This part belongs to the widely adopted 74HC series of high-speed CMOS logic devices. The 74HC194 specifically addresses applications needing versatile shift register functionality. Harris Corporation produced these components before industry consolidations, and they remain compatible with modern 74HC standards. The device serves as a fundamental building block for sequential logic systems requiring data movement and storage capabilities.

Shift Registers Replacement Considerations

Compatible substitutes include the CD74HC194M96 and generic 74HC194 variants from other manufacturers. Verify pinout compatibility and electrical characteristics such as propagation delay and drive strength. Ensure the replacement maintains the same 16-SOIC package dimensions for direct board replacement without mechanical modifications.