SN74ALS165DR

Shift Registers Overview

The SN74ALS165DR is a parallel-load 8-bit serial shift register manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible inputs. The device is housed in a 16-pin SOIC package designed for surface-mount installation. It functions as an 8-bit register, shifting data toward serial outputs (QH and QH) when clocked. The component supports an operating temperature range from 0°C to +70°C.

Shift Registers Feature Summary

• Parallel-load capability allows simultaneous data entry into all eight bits
• Serial output provides shifted data through dedicated QH and QH terminals
• TTL-compatible input structure ensures interface compatibility with standard logic families

Shift Registers Applications

• Data acquisition systems requiring parallel-to-serial conversion
• Digital signal processing interfaces
• Memory expansion circuits

Shift Registers Procurement Notes

Verify the specific revision level and packaging configuration against the manufacturer's current datasheet before procurement. Confirm that the 16-SOIC footprint matches the target PCB design. Ensure the operating temperature range aligns with the intended environmental conditions. Check for any recent product change notifications regarding pinout or electrical characteristics updates.

Shift Registers Selection Notes

Select this component when a parallel-load 8-bit shift register with TTL-compatible inputs is required. The SN74ALS165DR is suitable for applications needing high-speed data shifting within the ALS logic family specifications. Consider the 16-SOIC package constraints and the 4.5 V to 5.5 V power supply requirements during circuit design.

Shift Registers Part Context

This part belongs to the Texas Instruments SN74ALS series of advanced low-power Schottky logic devices. The SN74ALS165A variant is the standard designation for this parallel-load 8-bit shift register function. The 'DR' suffix indicates the SOIC package type and tape-and-reel shipping method. This series is characterized by reduced power consumption compared to standard LS logic while maintaining comparable speed.

Shift Registers Replacement Considerations

The SN74ALS165AD is a tube-packaged equivalent of the same logical function. Verify package compatibility if switching between DR and AD suffixes. Other ALS-series shift registers may offer different bit widths or loading capabilities.