74HCT259BQ-Q100,11

Latches Overview

The Nexperia 74HCT259BQ-Q100,11 is an 8-bit addressable latch from the 74HCT logic family. It operates with 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 four modes: addressable latch, memory, demultiplexer/decoder, and reset. It includes clamp diodes for overvoltage interfacing and meets AEC-Q100 Grade 1 automotive qualification standards.

Latches Feature Summary

• Automotive product qualification in accordance with AEC-Q100 (Grade 1)
• Wide supply voltage range from 2.0 V to 6.0 V
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
• DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection (AOI) of solder joints

Latches Applications

• Automotive applications requiring high reliability
• Serial-to-parallel data conversion systems
• 3-to-8 active HIGH decoder implementations
• Random addressable data entry circuits

Latches Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the component meets the intended environmental temperature range requirements. Ensure design compatibility with the specified logic input levels. Check for any recent revisions to the datasheet that may affect pinout or electrical characteristics.

Latches Selection Notes

Select this part when TTL-compatible inputs are required within an automotive environment. The DHVQFN package offers space efficiency and thermal enhancement. Consider the wide operating temperature range for harsh environments. Verify power dissipation limits against the specific PCB layout and airflow conditions.

Latches Part Context

This component belongs to the Nexperia 74HC/HCT259-Q100 series of 8-bit addressable latches. It is designed for automotive electronics, offering robust performance under varying voltage and temperature conditions. The HCT variant ensures compatibility with standard TTL logic levels while maintaining CMOS noise immunity.

Latches Replacement Considerations

Direct substitutes include other 74HCT259 variants from Nexperia such as the SO16 or TSSOP16 packages, provided the pinout and electrical specifications remain identical. Cross-vendor replacements must match the 8-bit addressable latch functionality and AEC-Q100 qualification.