74AHCT164BQ,115

Shift Registers Overview

The 74AHCT164BQ,115 is an 8-bit serial-in/parallel-out shift register manufactured by Nexperia USA Inc. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL input levels. The device includes two serial data inputs (DSA, DSB), eight parallel outputs (Q0-Q7), a clock input (CP), and an active LOW master reset (MR). Data shifts on the LOW-to-HIGH clock transition. It is housed in a 14-terminal DHVQFN package (SOT762-1) with dimensions of 2.5 x 3 mm.

Shift Registers Feature Summary

• Serial-to-parallel conversion capability with dual serial inputs acting as enable controls
• TTL-compatible input logic levels for direct interfacing with standard logic families
• Active LOW master reset function to clear all outputs independently of other inputs
• Overvoltage tolerant inputs allowing operation in mixed-voltage environments

Shift Registers Applications

• Data storage and buffering in digital systems
• Serial-to-parallel interface conversion
• Display driver circuits requiring parallel output expansion
• Control signal sequencing in industrial automation

Shift Registers Procurement Notes

Verify the specific ordering suffix ',115' corresponds to the DHVQFN14 package (SOT762-1) and tape-and-reel packaging configuration. Confirm that the TTL input level specification matches the system requirements, distinguishing it from the CMOS-level 74AHC164 variant. Ensure compatibility with the 4.5 V to 5.5 V supply voltage range during design validation.

Shift Registers Selection Notes

Select this component when TTL input compatibility is required alongside high-speed serial-to-parallel conversion. The DHVQFN package offers space efficiency for surface-mount designs. Consider the overvoltage tolerance feature if interfacing with signals exceeding the supply voltage. Verify thermal dissipation requirements for the operating temperature range up to +125 °C.

Shift Registers Part Context

This part belongs to the Nexperia 74AHCT series, which provides high-speed Si-gate CMOS technology compatible with Low-power Schottky TTL (LSTTL) standards. The 74AHCT164 variant specifically addresses applications needing serial data expansion into parallel formats. It shares functional similarities with other shift registers but is distinguished by its TTL input thresholds and specific package geometry.

Shift Registers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.