74AHC164PW,118

Shift Registers Overview

The Nexperia 74AHC164PW,118 is an 8-bit serial-in/parallel-out shift register housed in a TSSOP14 (SOT402-1) plastic package. It features two serial data inputs (DSA and DSB) and eight parallel outputs (Q0 to Q7). Data shifts on LOW-to-HIGH clock transitions, with a master reset input that clears the register when LOW. The device operates within a supply voltage range of 2.0 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C.

Shift Registers Feature Summary

• Features overvoltage tolerant inputs allowing use as translators in mixed voltage environments.
• Includes Schmitt-trigger actions on all inputs for high noise immunity.
• Provides balanced propagation delays and CMOS low power dissipation characteristics.

Shift Registers Applications

• Serial-to-parallel data conversion in digital logic circuits
• Data storage and buffering applications requiring parallel output access
• Interface translation between different voltage level domains

Shift Registers Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature grade. Confirm that the AHC variant aligns with the intended CMOS input logic levels rather than the AHCT TTL-compatible version. Ensure design compliance with absolute maximum ratings to prevent damage during operation or handling.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with parallel outputs is required in a thin shrink small outline package. Choose the AHC series for standard CMOS input compatibility across a wide voltage range. Consider the TSSOP14 form factor for surface-mount assembly constraints where body width and lead pitch are defining factors.

Shift Registers Part Context

This part belongs to the Nexperia 74AHC164 family of 8-bit shift registers. It shares functional similarities with the 74AHCT164 but differs in input voltage thresholds. The PW suffix specifically denotes the TSSOP14 package option, distinguishing it from SO14 or DHVQFN14 variants within the same logical product line.

Shift Registers Replacement Considerations

Direct substitutes include other manufacturers' 74AHC164 devices in TSSOP14 packages. Verify pinout compatibility and electrical specifications against the original datasheet before substitution.

Shift Registers FAQ

How does the master reset input function?

A LOW signal on the master reset (MR) input clears the register and forces all outputs LOW, independent of other input states.

What triggers the data shift operation?

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