74HC164D,652

Shift Registers Overview

The Nexperia 74HC164D,652 is an 8-bit serial-in, parallel-out shift register housed in a 14-lead SO plastic small outline package (SOT108-1). It operates on a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C. The device features two gated serial data inputs (DSA and DSB) that function as active HIGH enables for data entry through the other input. Data shifts occur on LOW-to-HIGH clock transitions, while an asynchronous master reset clears all outputs independently.

Shift Registers Feature Summary

• Features two serial data inputs where either can serve as an active HIGH enable for the other.
• Includes an asynchronous master reset input that forces all outputs LOW regardless of other states.
• Inputs are equipped with clamp diodes to facilitate interfacing with voltages exceeding VCC using current limiting resistors.

Shift Registers Applications

• Serial-to-parallel data conversion
• Parallel output expansion
• Digital logic control circuits

Shift Registers Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm package type and temperature range. Confirm RoHS compliance status and REACH SVHC declarations prior to integration. Ensure design margins align with absolute maximum ratings to prevent permanent damage during operation or storage.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with dual gated serial inputs is required. Verify compatibility with system supply voltages between 2.0 V and 6.0 V. Consider the SO14 package dimensions for PCB layout constraints. Ensure interface levels match CMOS requirements for the HC series variant.

Shift Registers Part Context

This part belongs to the 74HC logic family, utilizing CMOS technology for low power dissipation and high noise immunity. It complies with JEDEC standards JESD8C and JESD7A. The device offers latch-up performance exceeding 100 mA per JESD 78 Class II Level B and provides ESD protection exceeding 2000 V (HBM) and 1000 V (CDM).

Shift Registers Replacement Considerations

Nexperia datasheet lists no direct substitute part numbers for the 74HC164D,652.

Shift Registers FAQ

How do the serial data inputs function?

The device has two serial data inputs, DSA and DSB. Either input can be used as an active HIGH enable for data entry through the other input.

What triggers the data shift?

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