74AHCT573D-Q100J

Latches Overview

The 74AHCT573D-Q100 is an octal D-type transparent latch with 3-state outputs, qualified to AEC-Q100 Grade 1 for automotive use. It operates within a supply voltage range of 2.0 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features TTL-compatible input levels, overvoltage tolerant inputs up to 5.5 V, and Schmitt-trigger action on all inputs. It includes latch enable (LE) and output enable (OE) controls, providing high noise immunity and low power dissipation.

Latches Feature Summary

• Automotive qualification in accordance with AEC-Q100 Grade 1 standards
• TTL input level compatibility for the AHCT variant
• Overvoltage tolerant inputs allowing operation in mixed voltage environments
• Schmitt-trigger action on all inputs for improved noise immunity

Latches Applications

• Automotive data bus buffering
• Mixed voltage translation interfaces
• Octal register storage applications
• High-speed data latching in vehicle electronics

Latches Procurement Notes

Verify that the specific ordering suffix matches the required package type, as multiple options exist including SO20, TSSOP20, and DHVQFN20. Confirm the temperature grade aligns with system requirements, noting the specified range extends to +125 °C. Ensure design compliance with AEC-Q100 standards if deployed in automotive contexts. Cross-reference pin assignments against the selected package outline to prevent layout errors during PCB assembly.

Latches Selection Notes

Select this component when TTL logic interface compatibility is required alongside AHC performance characteristics. The AHCT variant ensures direct interfacing with standard TTL sources without additional level shifting circuitry. Consider the wide supply voltage range for systems requiring flexibility between 3.3 V and 5 V operations. Evaluate thermal management needs based on the chosen package option, particularly for higher density implementations.

Latches Part Context

This part belongs to the Nexperia 74AHC/AHCT573-Q100 family of octal transparent latches. It shares functional similarities with other members but is distinguished by its specific input logic family (AHCT) and automotive qualification. The 'D' suffix indicates the SO20 plastic small outline package variant. It serves as a robust solution for capturing and holding multi-bit data streams in demanding electronic environments.

Latches Replacement Considerations

Direct substitutes include other 74AHCT573 variants from different manufacturers that meet AEC-Q100 Grade 1 specifications. Verify pinout compatibility and electrical parameters such as propagation delay and supply voltage ranges before substitution. Non-automotive grades may lack the required reliability certifications for automotive deployment.