74AHCT573BQ,115

Latches Overview

The Nexperia 74AHCT573BQ,115 is an octal D-type transparent latch with 3-state outputs, housed in a DHVQFN20 package (SOT764-1). It operates within a supply voltage range of 4.5 V to 5.5 V. The device features TTL-compatible input levels and includes latch enable (LE) and output enable (OE) controls. Data enters the latches when LE is HIGH; data is stored upon the HIGH-to-LOW transition of LE. A HIGH on OE forces outputs to a high-impedance state without affecting internal latch states.

Latches Feature Summary

• TTL-compatible input levels for direct interfacing with TTL logic systems
• Overvoltage tolerant inputs allowing operation in mixed-voltage environments
• Schmitt-trigger action on all inputs for improved noise immunity
• High electrostatic discharge protection exceeding specified JEDEC class limits

Latches Applications

• Data storage in digital logic circuits
• Bus holding applications requiring 3-state control
• Level translation between TTL and CMOS domains
• Transparent latch functions in microprocessor interfaces

Latches Procurement Notes

Verify the ordering suffix '115' corresponds to the specific reel or tape-and-reel configuration required for automated assembly processes. Confirm that the DHVQFN20 package dimensions align with the printed circuit board land pattern design. Ensure thermal management strategies account for the power dissipation characteristics defined in the datasheet limiting values section.

Latches Selection Notes

Select this component when TTL input compatibility is required alongside CMOS performance benefits. The AHCT variant ensures proper logic level recognition from standard TTL sources. The BQ suffix indicates the DHVQFN20 package, suitable for space-constrained designs requiring thermal enhancement. Verify that the operating temperature range meets the specific environmental requirements of the target application.

Latches Part Context

This part belongs to the 74AHC/AHCT family of high-speed CMOS logic devices manufactured by Nexperia. It is functionally identical to the 74AHCT373 but utilizes positive latch enable logic rather than negative. The device provides eight independent D-type latches with common output enable functionality, designed for general-purpose digital storage and buffering tasks in industrial and consumer electronics.

Latches Replacement Considerations

The 74AHCT373 is functionally identical regarding latch behavior but differs in latch enable polarity. Direct substitution requires verifying that the system design accommodates the active-high latch enable signal of the 573 variant versus the active-low enable of the 373. Other 74AHCT573 variants from different manufacturers may require pinout and electrical characteristic verification.