Nexperia USA Inc. 74AUP1T50GXH

Overview

74AUP1T50GXH from Nexperia is a single low-power CMOS buffer with integrated voltage-level translation and Schmitt-trigger inputs, operating from 2.3 V to 3.6 V supply. It accepts 1.8 V logic inputs while driving 2.5 V or 3.3 V outputs, features IOFF partial power-down protection, and delivers propagation delay as low as 1.1 ns (VCC = 3.3 V, CL = 5 pF), enabling use in battery-powered IoT sensor interfaces and portable MCU I/O expansion.

For engineers reviewing the 74AUP1T50GXH datasheet, 74AUP1T50GXH pinout, 74AUP1T50GXH application, or 74AUP1T50GXH equivalent, key selection criteria include its dual-voltage input tolerance (up to 3.6 V), sub-1.5 μA max ICC at 125 °C, IOFF-enabled system-level power sequencing, and guaranteed operation across –40 °C to +125 °C industrial temperature range.

Technical Context

This device implements a non-inverting buffer function with hysteresis-enabled Schmitt-trigger inputs (VT+ = 0.75–1.19 V, VT− = 0.46–0.85 V at VCC = 3.0–3.6 V), ensuring robust noise immunity for slow-rising signals in noisy embedded environments. Its IOFF circuit actively disables output leakage when VCC = 0 V, preventing backflow current during partial power-down sequences in multi-rail systems.

The X2SON5 package (SOT1226-3) provides 5 terminals in a 0.8 mm × 0.8 mm × 0.32 mm thermally enhanced no-lead footprint, supporting high-density PCB layouts. Input voltage rating extends to 3.6 V independent of VCC, allowing direct interfacing with higher-voltage peripherals without external level-shifting components.

Key Specifications

Pinout & Package

X2SON5 plastic thermal enhanced extremely thin small outline package (SOT1226-3); 5-terminal no-lead surface-mount package; body dimensions 0.8 mm × 0.8 mm × 0.32 mm; wettable flank terminals for automated optical inspection (AOI).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buffer-level translation applications.

Compared with SN74LVC1T45DBVR and 74LVC1G125GW,125, the 74AUP1T50GXH uniquely combines unidirectional buffering, Schmitt-trigger noise immunity, and IOFF-enabled safe power sequencing - making it optimal for space-constrained, ultra-low-power, and mixed-voltage industrial sensor nodes where reliability under voltage droop and ESD stress is critical.

Availability

74AUP1T50GXH is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable MCU I/O expansion, automotive body control modules, and smart home hub power sequencing requiring stable component supply across extended temperature and long product lifecycles.

Supply support for 74AUP1T50GXH 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, and efficient discrete, logic, and MOSFET solutions for automotive, industrial, mobile, and consumer markets.

The 74AUP (Advanced Ultra-low Power) logic family targets battery-operated and energy-sensitive applications, emphasizing nanowatt static power, wide supply range, and robust noise immunity without sacrificing speed.

FAQ

Does 74AUP1T50GXH support true 5 V-tolerant inputs?

No. Inputs tolerate up to 3.6 V absolute maximum, not 5 V. While the datasheet states "inputs accept voltages up to 3.6 V", exceeding this violates Absolute Maximum Ratings (Table 5: VI max = +4.6 V only with current limiting). Direct 5 V connection risks permanent damage and invalidates warranty. Use a dedicated 5 V-tolerant translator like 74LVC1T45 if interfacing with 5 V logic.

Can pin 1 (n.c.) be grounded or left floating on the PCB?

Pin 1 is internally not connected and must remain unconnected on the PCB - no trace, pad, or solder joint. Grounding or tying it to any potential creates unintended parasitic coupling paths, potentially degrading ESD performance and increasing susceptibility to latch-up under transient conditions per JESD78 Class II compliance testing.

What is the minimum load capacitance for guaranteed tpd specification?

The propagation delay (tpd) is characterized down to CL = 5 pF across all VCC and temperature ranges. Below 5 pF, delay values are not tested or guaranteed; typical performance improves slightly, but design margins must rely only on published 5 pF data. For sub-5 pF loads (e.g., short traces to gate inputs), verify timing in-system using worst-case VCC and temperature corners.

How does IOFF behave when VCC ramps from 0 V to nominal?

IOFF activates when VCC falls below ~0.2 V and remains active until VCC exceeds ~0.8 V (per ΔIOFF spec). During ramp-up, the output stays in high-impedance state until VCC crosses the enable threshold, preventing glitch generation on downstream logic. This behavior is verified across –40 °C to +125 °C and ensures clean power sequencing in multi-rail systems.