CD74HCT165EG4

Shift Registers Overview

The CD74HCT165EG4 is an 8-bit parallel-in serial-out shift register manufactured by Texas Instruments. It belongs to the HCT logic family, utilizing CMOS technology for high-speed operation. The device features a single circuit configuration with nine input lines and operates within a supply voltage range of 4.5 V to 5.5 V. It supports a propagation delay of 40 ns and functions reliably across an extended temperature range from -55 °C to +125 °C. The component is housed in a PDIP-16 package.

Shift Registers Feature Summary

• Provides asynchronous parallel data loading capability for immediate input capture.
• Supports serial output shifting synchronized with positive-edge clock triggers.
• Features dedicated synchronous clear functionality for state reset.

Shift Registers Applications

• Digital data acquisition systems requiring parallel-to-serial conversion
• Input expansion modules for microcontroller-based embedded designs
• Status monitoring circuits in industrial control environments

Shift Registers Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's current datasheet to confirm lead-free compliance and RoHS status. Ensure the ordering code matches the exact PDIP-16 package variant required for your PCB footprint. Cross-reference the full part number with official Texas Instruments documentation to validate availability and any recent manufacturing changes.

Shift Registers Selection Notes

Select this component when interfacing with 5V logic systems requiring robust noise immunity and wide operating temperature ranges. The HCT series ensures compatibility with standard TTL logic levels while offering CMOS power efficiency. Consider the PDIP-16 package constraints for through-hole assembly processes and verify pinout alignment with existing schematic designs.

Shift Registers Part Context

This device is part of the broader SN74HCT165 family of 8-bit shift registers. It shares functional similarities with other parallel-load shift registers but is distinguished by its specific HCT logic characteristics and packaging. The EG4 designation indicates a specific manufacturing revision or compliance attribute within the Texas Instruments product line.

Shift Registers Replacement Considerations

Direct substitutes include the CD74HCT165E and SN74HCT165DRG4 variants. Verify pin compatibility and electrical specifications before swapping packages or logic families. Alternative manufacturers may offer equivalent parts under different naming conventions.