74HC164DB,118

Shift Registers Overview

The Nexperia 74HC164DB,118 is an 8-bit serial-in, parallel-out shift register housed in a 14-lead SO plastic small outline package (SOT108-1). It operates with 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 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 incorporate clamp diodes allowing interface to voltages exceeding VCC using current limiting resistors.

Shift Registers Applications

• General-purpose serial-to-parallel data conversion
• Parallel output expansion for microcontroller systems
• Control logic requiring asynchronous clearing

Shift Registers Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm the temperature grade aligns with operational requirements. Check for recent Product Change Notifications regarding marking or assembly updates. Ensure design compliance with JEDEC standards referenced in the datasheet. Validate input voltage levels against CMOS specifications.

Shift Registers Selection Notes

Select this component when an 8-bit serial-to-parallel conversion is required in a standard surface-mount package. The wide supply voltage range accommodates various logic families. The inclusion of clamp diodes simplifies interfacing with higher voltage sources. Verify that the operating temperature range meets the environmental constraints of the target application.

Shift Registers Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices manufactured by Nexperia. It is functionally compatible with industry-standard 74HC164 designs. The 'DB' designation specifically identifies the 14-lead SOIC package variant within the broader 74HC164 product family.

Shift Registers Replacement Considerations

Cross-reference with other manufacturers offering 74HC164 equivalents in SO14 packages. Verify pinout compatibility and electrical characteristics match the original design requirements before substitution.