CD74HC299M

Shift Registers Overview

The CD74HC299M is a high-speed CMOS logic device manufactured by Texas Instruments, functioning as an 8-bit universal shift register. It features bidirectional shifting capabilities and parallel-in/parallel-out data transfer modes within a single integrated circuit. The component utilizes a 20-pin Small Outline Integrated Circuit (SOIC) package designed for surface-mount technology applications. It operates with a supply voltage range of 2 V to 6 V and supports a wide operating temperature range from -55 °C to +125 °C. The device provides three-state outputs for effective bus driving and includes common I/O pins to facilitate flexible system integration.

Shift Registers Feature Summary

• Bidirectional serial shifting capability allowing data movement in both left and right directions
• Parallel-in and parallel-out functionality enabling simultaneous data loading and retrieval
• Three-state outputs providing controlled bus interfacing and isolation
• Common input/output pins reducing pin count requirements for parallel data access

Shift Registers Applications

• Data storage and buffering in digital communication systems
• Interface circuits requiring bidirectional data flow control
• General-purpose shift register applications in industrial control systems
• Memory expansion modules utilizing parallel-to-serial conversion

Shift Registers Procurement Notes

Verify the specific suffix 'M' corresponds to the SOIC-20 surface mount package configuration. Confirm that the manufacturer designation aligns with Texas Instruments specifications rather than third-party distributors. Ensure compliance with RoHS directives if required for your assembly process. Cross-reference the full part number against official Texas Instruments documentation to validate electrical characteristics and package dimensions before finalizing procurement orders.

Shift Registers Selection Notes

Select this component when bidirectional shifting and parallel data access are required in a compact surface-mount form factor. The HC series offers standard CMOS performance suitable for general-purpose logic applications. Consider the 2 V to 6 V supply range compatibility with your system voltage levels. Evaluate the 20-pin SOIC footprint against available PCB space constraints. Verify thermal requirements against the specified -55 °C to +125 °C operating range for your intended environment.

Shift Registers Part Context

This component belongs to the Texas Instruments CD74HC299 family of high-speed CMOS logic devices. The family specializes in 8-bit universal shift registers with versatile data handling capabilities. Variants within the series may differ in packaging options or temperature ratings while maintaining core functional equivalence. The CD74HC299M specifically denotes the surface-mount version optimized for automated assembly processes in modern electronic manufacturing.

Shift Registers Replacement Considerations

Compatible substitutes include other 8-bit bidirectional shift registers from the same logic family. Verify pinout compatibility and electrical specifications before substitution. Alternative packages such as PDIP or TSSOP may require adapter solutions. Ensure replacement parts meet the same voltage and temperature operational limits.