CD74HC165M

Shift Registers Overview

The CD74HC165M is an 8-bit parallel-in serial-out shift register manufactured by Harris Corporation. It belongs to the 74HC series and operates on a CMOS process with a supply voltage range of 2V to 6V. The device features buffered inputs, asynchronous parallel load capability, and complementary outputs. It supports a maximum operating frequency of 38MHz and functions within a temperature range of -55°C to 125°C. The component is housed in a 16-SOIC surface-mount package.

Shift Registers Feature Summary

• Asynchronous parallel data loading for immediate input capture
• Complementary serial output configuration
• Buffered input structure for signal integrity

Shift Registers Applications

• Embedded control I/O expansion
• Parallel-to-serial data conversion systems
• Digital logic interface circuits

Shift Registers Procurement Notes

Verify RoHS compliance status as documentation indicates non-compliance. Confirm manufacturer origin between Harris Corporation and Texas Instruments/Rochester Electronics due to acquisition history. Validate package marking and date codes against current supply chain sources to ensure authenticity.

Shift Registers Selection Notes

Select this component when an 8-bit serial shift register with parallel load functionality is required in a surface-mount design. Ensure the system voltage aligns with the 2V to 6V operational range. Consider the 16-SOIC footprint constraints during PCB layout planning.

Shift Registers Part Context

This part is part of the standard 74HC logic family, widely used for general-purpose digital switching and data handling. Harris Semiconductor was acquired by Texas Instruments, which now manages the product line. The CD74HC165M serves as a legacy alternative to newer high-speed logic families while maintaining compatibility with standard TTL/CMOS interfaces.

Shift Registers Replacement Considerations

CD74HCT165M offers compatible functionality with HCT logic levels. SN74HC165N provides equivalent performance in a DIP package. Verify pinout compatibility before substituting with generic equivalents.