74AHCT273BQ,115

Overview

The Nexperia 74AHCT273BQ,115 is a D-Type Edge Triggered Flip-Flop belonging to the 74AHCT logic series. It features eight D-type inputs and corresponding non-inverting outputs within a single circuit configuration. The device operates on a supply voltage range of 4.5 V to 5.5 V and utilizes a 20-DHVQFN surface-mount package with dimensions of 4.5x2.5 mm. Key electrical specifications include a maximum propagation delay of 9.2 ns at 5 V with 50 pF load, output drive currents of ±8 mA, and a static current of 4 µA. It supports a clock frequency of 75 MHz and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Provides edge-triggered data storage for eight-bit parallel applications via D-type flip-flops.
• Ensures signal integrity through Schmitt-trigger action at all inputs for tolerance of slow rise and fall times.
• Maintains compatibility with standard TTL logic levels due to AHCT family characteristics.

Applications

• Parallel data storage in digital systems
• Shift register construction
• Timing and synchronization circuits

Procurement Notes

Verify the specific suffix 'BQ' corresponds to the DHVQFN-20 package variant rather than other available packages like TSSOP or SO. Confirm that the '115' suffix aligns with the required reel packaging quantity of 3,000 units if ordering bulk quantities. Ensure the design accommodates the 4.5 V minimum supply voltage requirement inherent to the AHCT series. Check for any recent Product Change Notifications regarding assembly sites or labeling updates before finalizing procurement.

Selection Notes

Select this component when a wide supply voltage range starting from 2 V is not required, as the AHCT series is optimized for 5 V operation. Choose this part over AHC variants if direct interface with TTL logic levels is necessary for system compatibility. Consider the 20-DHVQFN package only if the specific thermal and footprint constraints of the 4.5x2.5 mm form factor are met. Evaluate the 9.2 ns propagation delay against system timing requirements to ensure adequate setup and hold times are maintained.

Part Context

This component is part of the broader 74AHCT273 family, which includes variants such as 74AHCT273PW and 74AHCT273BQ. While functionally identical as octal D-type flip-flops, these parts differ primarily in their physical packaging and manufacturing lot codes. The BQ variant specifically denotes the DHVQFN package, distinguishing it from the PW (TSSOP) version. All variants share the same logical functionality and electrical characteristics defined by the 74AHCT specification.

Replacement Considerations

Direct functional substitutes include other 74AHCT273 variants from Nexperia, such as 74AHCT273PW,118, provided the package change from DHVQFN to TSSOP is acceptable for the PCB layout. Cross-brand replacements must match the 74AHCT logic family specifications to ensure voltage level compatibility and pinout consistency.