Nexperia USA Inc. 74AUP1T34GXH

Overview

74AUP1T34GXH from Nexperia is a single-channel dual-supply voltage-translating buffer with independent VCC(A) and VCC(Y) rails (1.1 V to 3.6 V), Schmitt-trigger inputs for noise immunity, IOFF-enabled partial power-down protection, and guaranteed operation from −40 °C to +125 °C in the X2SON5 (SOT1226-3) package. It enables level-shifting between disparate logic domains in ultra-low-power IoT sensor nodes and battery-powered microcontroller peripherals.

For engineers reviewing the 74AUP1T34GXH datasheet, 74AUP1T34GXH pinout, 74AUP1T34GXH application, or 74AUP1T34GXH equivalent, this device is selected for its sub-1 µA static ICC, rail-to-rail input tolerance up to 3.6 V, and validated 5-pin X2SON thermal performance in space-constrained portable designs requiring robust voltage translation without external biasing.

Technical Context

The 74AUP1T34GXH implements a unidirectional A→Y buffer with separate supply references: input threshold and drive strength scale with VCC(A), while output high/low levels and drive capability are defined by VCC(Y). Its Schmitt-trigger input provides hysteresis (typically 0.2 × VCC(A)) to suppress noise on slow-rising signals.

IOFF circuitry actively disables the output stage when either VCC(A) or VCC(Y) is at 0 V, limiting backflow current to ±0.75 µA - critical for hot-swap and multi-rail power sequencing. Propagation delay ranges from 1.4 ns (VCC(A)/VCC(Y) = 3.3 V, CL = 5 pF) to 33.5 ns (1.1 V/1.1 V, CL = 30 pF), with dynamic power governed by CPD = 4.6 pF at 3.3 V.

Key Specifications

Pinout & Package

X2SON5 (SOT1226-3) package: 0.8 mm × 0.8 mm × 0.32 mm body, no leads, thermal-enhanced construction, side-wettable flanks optional (not present in GXH variant), rated for 250 mW total power dissipation with 3.0 mW/K derating above 67 °C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage-translating buffer applications.

Compared with SN74LVC1T34DBVR and TXB0101DCKR, the 74AUP1T34GXH uniquely delivers true dual-supply independence, lowest ICC (<1.4 µA), and smallest X2SON5 footprint - making it optimal for space- and power-constrained unidirectional translation where rail isolation is mandatory.

Availability

74AUP1T34GXH is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body electronics, wearable health monitors, and smart home hub expansions requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74AUP1T34GXH 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 focused on essential efficiency technologies, delivering high-performance, reliable components for automotive, industrial, and consumer markets.

The 74AUP advanced ultra-low-power logic family targets battery-operated and thermally constrained applications requiring nanowatt static power, wide voltage flexibility, and robust ESD immunity - optimized for IoT edge nodes and portable electronics.

FAQ

Can 74AUP1T34GXH translate from 3.3 V input to 1.2 V output?

Yes. With VCC(A) = 3.3 V and VCC(Y) = 1.2 V, the device accepts 0–3.6 V input signals (overvoltage tolerant) and produces valid 0–1.2 V CMOS output levels. Input thresholds scale with VCC(A), ensuring reliable switching even with 3.3 V logic driving a 1.2 V domain.

Is a pull-up resistor required on the Y output?

No. The 74AUP1T34GXH features a push-pull output stage capable of actively driving high or low without external passive components. Pull-ups are unnecessary unless open-drain emulation is specifically required - which this device does not support natively.

What happens to the Y output when VCC(Y) = 0 V and VCC(A) = 1.8 V?

The IOFF circuit disables the output driver, placing Y in a high-impedance state with leakage ≤ ±0.75 µA. This prevents back-current from the A input through the output stage into the grounded VCC(Y) rail - protecting downstream circuitry during power sequencing or fault conditions.

Does the Schmitt-trigger input affect timing specifications?

Yes. The input hysteresis increases effective noise margin but adds minimal delay - propagation delay values in the datasheet (e.g., 1.4–33.5 ns) already include Schmitt action. No additional timing derating is required; the published tPLH/tPHL fully characterizes system-level timing behavior.