SN74HCS164BQAR

Shift Registers Overview

The SN74HCS164BQAR is an automotive-grade, 8-bit serial-in/parallel-out shift register manufactured by Texas Instruments. It belongs to the HCS logic family, featuring Schmitt-trigger inputs for noise immunity and robust signal conditioning. The device operates within a supply voltage range of 2 V to 6 V and supports push-pull outputs with specified drive capabilities. Designed for high reliability in harsh environments, it meets AEC-Q100 qualification standards and functions across an extended industrial temperature range from -40°C to +125°C.

Shift Registers Feature Summary

• Automotive-grade construction qualified under AEC-Q100 standards for enhanced durability
• Schmitt-trigger inputs provide effective noise filtering and clean signal transitions
• Wide operating voltage range supports flexible power supply integration
• Extended temperature rating ensures stable performance in demanding thermal conditions

Shift Registers Applications

• Automotive data acquisition systems requiring reliable serial-to-parallel conversion
• Industrial control interfaces utilizing noisy digital communication lines
• Embedded memory expansion modules in vehicle electronic control units
• Sensor interface circuits needing robust input signal conditioning

Shift Registers Procurement Notes

Verify the specific suffix 'BQAR' against the manufacturer's official datasheet to confirm package type and tape-and-reel specifications. Ensure the component meets the required AEC-Q100 grade for your target application. Cross-reference the full part number with authorized distributors to avoid counterfeit risks. Confirm that the voltage and temperature ratings align with your system design constraints before finalizing procurement orders.

Shift Registers Selection Notes

Select this component when designing automotive or industrial systems requiring high-noise immunity and wide voltage tolerance. The Schmitt-trigger inputs make it suitable for applications with slow-rising signals or significant electrical interference. Consider the 8-bit capacity for parallel data output needs. Verify that the WQFN package fits your PCB layout constraints and thermal management requirements compared to alternative packages in the same logic family.

Shift Registers Part Context

This part is a member of the SN74HCS series, which combines high-speed CMOS performance with Schmitt-trigger functionality. Unlike standard HC logic, the HCS variant offers superior noise margins and cleaner switching characteristics. The 'Q1' designation indicates automotive qualification, while 'BQAR' specifies the specific package and reel configuration. This places it within TI's portfolio of ruggedized logic devices designed for critical safety and reliability applications.

Shift Registers Replacement Considerations

Direct replacements include other SN74HCS164 variants with different package options such as SN74HCS164DR or SN74HCS164PW, provided they meet the same voltage and temperature requirements. Non-automotive equivalents like the SN74HC164 may be considered if AEC-Q100 qualification is not strictly required, though noise immunity will differ.