74AHCT595BQ,115

Shift Registers Overview

The Nexperia 74AHCT595BQ,115 is an 8-bit serial-in/serial or parallel-out shift register with output latches and 3-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL compatible inputs. The device includes separate clocks for the shift and storage registers, a serial input (DS), a serial output (Q7S) for cascading, and an asynchronous master reset (MR). It is housed in a DHVQFN16 package (SOT763-1) with dimensions of 2.5 mm by 3.5 mm.

Shift Registers Feature Summary

• Features TTL compatible inputs for direct interfacing with standard logic families.
• Includes Schmitt-trigger action on all inputs to ensure high noise immunity.
• Provides overvoltage tolerant inputs capable of handling voltages up to 5.5 V.
• Offers balanced propagation delays and CMOS low power dissipation characteristics.

Shift Registers Applications

• Serial-to-parallel data conversion
• Remote control holding register

Shift Registers Procurement Notes

Verify that the specific ordering suffix ',115' corresponds to the DHVQFN16 (SOT763-1) package variant. Confirm the TTL input level compatibility requirement matches the system design, as this differs from the AHC series. Ensure the operating environment stays within the specified -40 °C to +125 °C temperature range for optimal performance.

Shift Registers Selection Notes

Select this component when TTL-level input compatibility is required alongside the speed benefits of advanced CMOS technology. The DHVQFN16 package is suitable for applications demanding compact surface-mount footprints. Consider the 3-state outputs for bus-oriented systems where multiple devices share common data lines.

Shift Registers Part Context

This part belongs to the 74AHC/AHCT595 family of 8-bit shift registers manufactured by Nexperia. It shares functional similarities with other members like the 74HC595 but distinguishes itself through TTL-compatible input thresholds. The BQ suffix specifically denotes the DHVQFN16 package option within this product line.

Shift Registers Replacement Considerations

Direct substitutes include the 74AHC595BQ,115 for CMOS input levels or the 74HCT595BQ,115 if legacy HCT specifications are preferred. Verify pinout and electrical characteristics against the target datasheet before implementation.

Shift Registers FAQ

What is the difference between the 74AHCT595 and 74AHC595 input levels?

The 74AHCT595 features TTL compatible inputs, whereas the 74AHC595 operates with CMOS input levels. Both share the same supply voltage range and functionality.

How does the asynchronous reset function work?

A LOW signal on the MR (Master Reset) input resets the shift register asynchronously, regardless of the clock states.