Nexperia USA Inc. 74AUP3G34GFX

Overview

74AUP3G34GFX from Nexperia is a low-power triple buffer IC with Schmitt-trigger inputs, designed for signal conditioning and noise-immune level translation in battery-powered and space-constrained systems. It operates across 0.8 V to 3.6 V supply, delivers ≤0.9 μA max ICC at 25 °C, supports partial power-down via IOFF, and is rated for −40 °C to +125 °C. Used in sensor interface signal routing and I²C bus buffering.

For engineers reviewing the 74AUP3G34GFX datasheet, 74AUP3G34GFX pinout, 74AUP3G34GFX application, or 74AUP3G34GFX equivalent, key selection criteria include ultra-low static current, Schmitt-trigger input hysteresis (enabling robust operation with slow-rising signals), IOFF-enabled power sequencing, and compatibility with 1.2 V, 1.8 V, and 3.3 V logic domains.

Technical Context

This device implements three independent non-inverting buffers, each with Schmitt-trigger inputs providing hysteresis of typically 0.1 × VCC - critical for rejecting noise on slow or noisy control lines. The IOFF circuit actively disables outputs when VCC = 0 V, limiting backflow current to ±0.75 μA maximum over temperature.

Dynamic performance is load- and voltage-dependent: propagation delay ranges from 1.4 ns (VCC = 3.3 V, CL = 5 pF) to 32.1 ns (VCC = 0.8 V, CL = 30 pF). Power dissipation capacitance (CPD) is 4.0 pF at 3.3 V, enabling accurate dynamic power estimation using PD = CPD × VCC² × fi × N.

Key Specifications

Pinout & Package

X2SON8 package (SOT1233-2): plastic thermal-enhanced extremely thin small outline, no leads, 8 terminals, body size 1.35 mm × 0.8 mm × 0.32 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple buffer applications.

Compared with SN74LVC3G34DCUR and 74LVC1G34GW,125, the 74AUP3G34GFX uniquely combines triple buffering, Schmitt-trigger inputs, and guaranteed IOFF behavior - making it the only option for space-constrained, battery-sensitive designs requiring noise immunity and seamless power sequencing.

Availability

74AUP3G34GFX is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery-powered wearables, automotive body control modules, and I²C bus extension applications requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74AUP3G34GFX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert delivering high-performance, reliable logic, discrete, and MOSFET solutions with leadership in efficiency, miniaturization, and robustness.

The 74AUP (Advanced Ultra-low Power) product line targets energy-critical applications including portable medical devices, IoT edge nodes, and automotive subsystems where sub-microamp quiescent current and wide VCC tolerance are mandatory.

FAQ

Does 74AUP3G34GFX support true bidirectional signal routing?

No. It is a unidirectional triple buffer: inputs (1A/2A/3A) drive corresponding outputs (1Y/2Y/3Y) only. For bidirectional applications like I²C, external direction control or dedicated bus buffers are required. Its IOFF feature applies only to output disable during power-down-not data flow reversal.

Can 74AUP3G34GFX be used with 0.8 V logic without external biasing?

Yes. It is fully specified down to 0.8 V VCC, with VIH/VIL thresholds scaling proportionally (e.g., VIH ≥ 0.75 × VCC at −40 °C to +125 °C). Input hysteresis remains functional, and propagation delay is characterized at 0.8 V - no external level-shifting components are needed.

What is the maximum capacitive load this device can drive reliably at 3.3 V?

It is characterized up to 30 pF load capacitance at VCC = 3.3 V, with tPD ≤ 7.2 ns (max) and VOL ≤ 0.50 V at IO = 4 mA. Driving >30 pF may increase delay and degrade noise margins; for heavier loads, consider adding series termination or selecting a higher-drive buffer.

How does IOFF behave when VCC is ramping during power-up?

IOFF activates only when VCC falls below ~0.2 V. During power-up, outputs remain high-impedance until VCC exceeds ~0.5 V, then transition to active state after power-on reset timing completes. No external enable control is required - the function is fully internal and automatic.