74AHCT573BQ-Q100X

Latches Overview

The Nexperia 74AHCT573BQ-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 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-compatible input levels with overvoltage tolerance up to 5.5 V
• Schmitt-trigger action on all inputs for enhanced noise immunity
• DHVQFN package with side-wettable flanks enabling automatic optical inspection

Latches Applications

• Automotive data bus interface circuits
• Mixed voltage level translation between TTL and CMOS domains
• Octal data storage and buffering in vehicle control modules

Latches Procurement Notes

Verify the specific suffix BQ corresponds to the DHVQFN20 package (SOT764-1) when ordering. Confirm that the Q100 designation indicates AEC-Q100 Grade 1 automotive qualification. Ensure the AHCT variant is selected for TTL input compatibility rather than the AHC CMOS version. Check the most recent datasheet revision for any updates to operating conditions or package dimensions before finalizing design integration.

Latches Selection Notes

Select this component when TTL logic levels are required at the input stage while maintaining CMOS performance characteristics. The 3-state outputs allow for direct connection to bidirectional buses. The wide supply voltage range supports both 3.3 V and 5 V systems. Consider the DHVQFN package for applications requiring compact footprint and thermal efficiency with automated assembly capabilities.

Latches Part Context

This part belongs to the 74AHC_AHCT573_Q100 family of octal latches. The 'AHCT' prefix specifies TTL input thresholds, distinguishing it from the 'AHC' variant which uses CMOS thresholds. The 'BQ' suffix identifies the DHVQFN20 package type. The '-Q100' suffix denotes automotive grade qualification. Other variants in the family include SO20 and TSSOP20 packages.

Latches Replacement Considerations

Direct substitutes include other 74AHCT573 parts in the same DHVQFN20 package from compatible manufacturers, provided they meet AEC-Q100 Grade 1 requirements. Verify pinout compatibility and electrical specifications such as propagation delay and output drive current. Cross-reference with 74AHC573BQ-Q100 if CMOS input levels are acceptable instead of TTL.