74HCT3G34DP-Q100H

Overview

The Nexperia 74HCT3G34DP-Q100H is an automotive-grade triple buffer gate from the HCT logic family, housed in a TSSOP8 (SOT505-2) package. 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 TTL-level input compatibility, clamp diodes for overvoltage protection, and high noise immunity. Key electrical parameters include a maximum propagation delay of 29 ns at 4.5 V and a power dissipation capacitance of 9 pF.

Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards
• TTL-compatible input levels for direct interfacing with standard logic
• Integrated input clamp diodes enabling safe operation above VCC

Applications

• Automotive signal buffering and line driving
• Interface circuits requiring TTL-to-CMOS level translation
• High-noise environments utilizing Schmitt-trigger-like robustness

Procurement Notes

Verify the specific suffix 'H' against the manufacturer's current ordering guide to confirm reel packaging specifications. Ensure the design accounts for the TSSOP8 thermal derating characteristics defined in the datasheet. Confirm that the application environment remains within the specified -40 °C to +125 °C operating temperature range for full parameter validity.

Selection Notes

Select this component when TTL-level inputs are required alongside CMOS low-power benefits in automotive contexts. The HCT series ensures compatibility with 5 V logic systems while offering improved noise immunity compared to standard HC variants. Consider the TSSOP8 package for space-constrained PCB layouts requiring thin-profile surface-mount assembly.

Part Context

This part belongs to the 74HCT3G34-Q100 triple buffer family, sharing functional logic with the 74HC3G34-Q100 but differing in input threshold voltages. The DP suffix specifically denotes the TSSOP8 plastic thin shrink small outline package variant. It is distinct from single-gate or dual-gate configurations within the same automotive logic portfolio.

Replacement Considerations

The 74HC3G34DP-Q100H serves as a logical alternative if CMOS-level inputs are acceptable instead of TTL requirements.