SN74HCS165DYYR

Shift Registers Overview

The SN74HCS165DYYR is an automotive-grade, 8-bit parallel-load shift register from Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports ambient temperatures from -40°C to +125°C. The device features Schmitt-trigger inputs for noise rejection and balanced CMOS push-pull outputs capable of ±7.8 mA drive current at 6 V. It utilizes the SOT-23-THIN (DYY) package.

Shift Registers Feature Summary

• Schmitt-trigger architecture provides high tolerance for slow or noisy input signals
• Balanced CMOS push-pull outputs ensure similar sourcing and sinking capabilities
• Low power consumption with typical supply current of 100 nA

Shift Registers Applications

• Increasing the number of inputs on a microcontroller
• Cascading multiple units to expand data input capacity while using a single serial controller input

Shift Registers Procurement Notes

Verify that the ordering suffix DYY corresponds to the SOT-23-THIN package configuration. Confirm the Q1 suffix indicates automotive qualification requirements are met. Ensure the component matches the specific thermal and electrical specifications outlined in the official datasheet before integration.

Shift Registers Selection Notes

Select this component when system design requires robust noise immunity via Schmitt-trigger inputs. It is suitable for applications needing low static power consumption and wide operating voltage flexibility between 2 V and 6 V. Verify that the SOT-23-THIN footprint aligns with available PCB space constraints.

Shift Registers Part Context

This part belongs to the SN74HCS165 family of 8-bit parallel-load shift registers. The HCS series combines High-speed CMOS performance with Schmitt-trigger inputs. The DYY suffix specifically denotes the SOT-23-THIN package variant, offering a compact body size compared to standard SOIC or TSSOP options.

Shift Registers Replacement Considerations

Direct substitutes include other SN74HCS165 variants such as SN74HCS165PW, SN74HCS165D, and SN74HCS165BQBQBR, provided the package type difference is accommodated by the design.