SN74HCS164QDRQ1

Shift Registers Overview

The SN74HCS164QDRQ1 is an automotive-grade, 8-bit parallel-out serial shift register from Texas Instruments. It features Schmitt-trigger inputs for noise immunity and operates within a supply voltage range of 2 V to 6 V. The device includes AND-gated serial inputs (A and B) and an asynchronous active-low clear (CLR) function. Data is clocked on the rising edge of the CLK signal. It is qualified under AEC-Q100 standards with a temperature grade of 1, supporting operation from -40°C to +125°C.

Shift Registers Feature Summary

• Schmitt-trigger inputs provide high noise rejection and tolerance for slow-edged signals
• AND-gated serial inputs allow complete control over incoming data entry
• Asynchronous clear input resets all registers to a logical low state immediately
• Balanced CMOS push-pull outputs support bidirectional current drive

Shift Registers Applications

• Output expansion in automotive systems
• LED matrix control circuits
• Seven-segment display control
• 8-bit data storage applications

Shift Registers Procurement Notes

Verify that the component matches the specific SN74HCS164QDRQ1 designation, ensuring the 'D' package suffix corresponds to the SOIC-14 form factor required by your design. Confirm the 'Q1' suffix indicates AEC-Q100 qualification for automotive use. Cross-reference the manufacturer's datasheet revision history to ensure compatibility with your system requirements.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with Schmitt-trigger inputs is required for noisy environments. Ensure the operating voltage falls between 2 V and 6 V. Verify that the PCB layout accommodates the SOIC-14 package dimensions. Consider the maximum switching frequency limits at your specific supply voltage if high-speed data shifting is necessary.

Shift Registers Part Context

This part belongs to the SN74HCS164-Q1 family of automotive shift registers. It shares functional similarities with other HCS series devices but is distinct in its 8-bit serial-to-parallel configuration. The QDRQ1 variant specifically denotes the SOIC-14 package with automotive qualification, differentiating it from non-automotive or differently packaged counterparts like the SN74HCS164PW-Q1.

Shift Registers Replacement Considerations

Direct substitutes include other SN74HCS164-Q1 variants with different packages, such as SN74HCS164PW-Q1 (TSSOP) or SN74HCS164BQA-Q1 (WQFN), provided the pinout and electrical characteristics remain compatible with the existing design constraints.