74HCT573BQ-Q100,11

Latches Overview

The Nexperia 74HCT573BQ-Q100,11 is an octal D-type transparent latch with 3-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and supports ambient temperatures from -40 °C to +125 °C. The device features latch enable (LE) and output enable (OE) inputs, allowing data storage upon LE transition and high-impedance output control via OE. It utilizes the DHVQFN-20 package (SOT764-1) with dimensions of 2.5 mm x 4.5 mm x 0.85 mm. Qualified to AEC-Q100 Grade 1 standards, it includes clamp diodes on inputs for interface flexibility.

Latches Feature Summary

• Automotive qualification in accordance with AEC-Q100 Grade 1 standards
• Transparent operation when latch enable is HIGH; stores data on HIGH-to-LOW transition
• High-impedance OFF-state achieved via active LOW output enable input
• DHVQFN package with side-wettable flanks enabling automated optical inspection

Latches Applications

• Bus-oriented applications requiring 3-state non-inverting outputs
• Input or output ports for microprocessors and microcomputers
• Automotive electronic systems meeting AEC-Q100 requirements

Latches Procurement Notes

Verify the specific ordering suffix

Latches Selection Notes

Select this component for designs requiring TTL-compatible logic levels within a 4.5 V to 5.5 V supply range. The HCT variant ensures compatibility with standard TTL inputs while offering CMOS low power dissipation. Ensure the design accommodates the DHVQFN-20 footprint and thermal pad requirements specified in the SOT764-1 outline.

Latches Part Context

This part belongs to the 74HCT573-Q100 series, which includes variants such as 74HC573BQ-Q100 and other package options like SO20 and TSSOP20. All variants share the same octal D-type latch functionality but differ in input logic levels (CMOS vs. TTL) and physical packaging. The BQ suffix specifically denotes the DHVQFN package type.

Latches Replacement Considerations

Direct pin-compatible replacements include other 74HCT573 variants in the DHVQFN-20 package, such as the 74HC573BQ-Q100 if CMOS input levels are acceptable. Verify that any substitute maintains AEC-Q100 Grade 1 qualification if automotive reliability is required.