74HC164BQ,115

Shift Registers Overview

The Nexperia 74HC164BQ,115 is an 8-bit serial-in, parallel-out shift register housed in a DHVQFN14 package (SOT762-1). It operates on a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range from -40 °C to +125 °C. The device features two gated serial data inputs (DSA and DSB) that act as active HIGH enables for data entry through the other input. Data shifts on LOW-to-HIGH clock transitions, while an asynchronous master reset clears all outputs independently.

Shift Registers Feature Summary

• Gated serial data inputs allow flexible configuration where either input serves as an enable for the other.
• Asynchronous master reset function clears the register and forces outputs LOW regardless of clock or data states.
• CMOS construction provides low power dissipation and high noise immunity across the operating voltage range.

Shift Registers Applications

• Serial-to-parallel data conversion
• Parallel output expansion for microcontrollers
• LED driver control systems

Shift Registers Procurement Notes

Verify the specific ordering suffix '115' corresponds to the DHVQFN14 package variant when sourcing. Confirm RoHS3 compliance status and moisture sensitivity level requirements against your assembly process specifications. Ensure the supplier documentation matches the SOT762-1 outline dimensions provided in the official datasheet.

Shift Registers Selection Notes

Select this component for applications requiring wide supply voltage compatibility between 2.0 V and 6.0 V. The DHVQFN14 package is suitable for space-constrained surface-mount designs. Verify that input voltage levels remain within CMOS specifications for the 74HC series variant rather than TTL levels required by the HCT version.

Shift Registers Part Context

This part belongs to the 74HC logic family, characterized by high-speed CMOS technology. It shares functional similarities with other 8-bit shift registers but is distinguished by its specific pinout and package type. The BQ suffix indicates the DHVQFN14 leadless package, differentiating it from SO or TSSOP variants within the same logical family.

Shift Registers Replacement Considerations

SN74HCS164BQAR is listed as a similar substitute part number by Texas Instruments.

Shift Registers FAQ

How do the dual serial inputs function?

The DSA and DSB inputs are ANDed internally; either input can serve as an active HIGH enable for data entry through the other input.

What triggers the data shift operation?

Data is shifted into the register on the LOW-to-HIGH transition of the clock (CP) input.