74HCT244BQ-Q100,11

Overview

The Nexperia 74HCT244BQ-Q100,11 is an octal buffer and line driver featuring three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device contains two independent four-bit buffers controlled by separate output enable inputs (1OE and 2OE). It utilizes the DHVQFN20 package (SOT764-1) with side-wettable flanks for automated optical inspection.

Feature Summary

• Automotive qualification in accordance with AEC-Q100 Grade 1 standards
• TTL input levels compatible with standard logic families
• High noise immunity and low power CMOS dissipation
• Latch-up performance exceeding 100 mA per JESD 78 Class II Level B

Applications

• Automotive electronic systems requiring qualified logic components
• Octal bus interface applications
• Mixed voltage environments utilizing TTL-compatible inputs

Procurement Notes

Verify that the specific ordering suffix matches the required DHVQFN20 package configuration. Confirm the automotive grade designation aligns with project reliability requirements. Ensure the TTL input level specification meets system interface needs rather than CMOS levels. Validate environmental operating limits against intended deployment conditions.

Selection Notes

Select this component when TTL-level input compatibility is required alongside automotive qualification standards. The DHVQFN20 package offers a compact footprint suitable for space-constrained designs. Verify that the 4.5 V to 5.5 V supply voltage range matches the target system power rails. Consider the thermal enhanced package design for heat dissipation requirements.

Part Context

This part belongs to the Nexperia 74HCT244-Q100 family of octal buffers. It shares functional characteristics with other variants in the series but differs in packaging and specific electrical parameters defined by the HCT logic family. The Q100 suffix indicates automotive-grade qualification distinct from standard commercial logic devices.

Replacement Considerations

Direct replacements must maintain AEC-Q100 Grade 1 qualification and DHVQFN20 packaging. Verify TTL input thresholds match existing circuit designs. Cross-reference pinouts to ensure compatibility with the SOT764-1 outline.