Nexperia USA Inc. 74AUP1T50GX,125

Overview

74AUP1T50GX,125 from Nexperia is a single-channel low-power 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 CMOS input levels while outputting rail-to-rail logic compatible with 2.5 V or 3.3 V systems, features IOFF partial power-down protection, and is rated for −40 °C to +125 °C operation in the X2SON5 (SOT1226-3) package.

For engineers reviewing the 74AUP1T50GX,125 datasheet, 74AUP1T50GX,125 pinout, 74AUP1T50GX,125 application, or 74AUP1T50GX,125 equivalent, key selection criteria include its 1.5 μA max ICC static current, 0.25–0.56 V hysteresis voltage (VH), IOFF-enabled backflow prevention during power sequencing, and guaranteed propagation delay ≤7.5 ns at 3.3 V/30 pF load - critical for battery-powered I/O bridging and mixed-voltage interface design.

Technical Context

This device implements a non-inverting buffer function with Schmitt-trigger input thresholds (VT+ = 0.75–1.19 V, VT− = 0.46–0.85 V at VCC = 3.0–3.6 V) enabling robust noise immunity across wide supply and temperature ranges. Its IOFF circuit actively disables outputs when VCC = 0 V, blocking destructive back-currents during partial power-down sequences in multi-rail systems.

The 5-terminal X2SON5 package supports ultra-dense PCB layouts with thermal-enhanced construction (0.8 × 0.8 × 0.32 mm body), while input voltage tolerance up to 3.6 V allows safe interfacing with higher-voltage logic domains without external level-shifting components.

Key Specifications

Pinout & Package

X2SON5 (SOT1226-3) thermally enhanced 5-terminal no-lead package: 0.8 mm × 0.8 mm × 0.32 mm body, bottom-side thermal pad, land grid array footprint optimized for high-density routing and thermal dissipation in space-constrained IoT modules.

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 74AUP1T50GX,125 uniquely combines unidirectional buffering, Schmitt-trigger noise immunity, and autonomous IOFF - making it optimal for ultra-low-power, noise-prone, single-direction I/O bridging where minimal BOM count and zero-control-pin operation are critical.

Availability

74AUP1T50GX,125 is available at Aetrix Electronics and suitable for industrial sensor interfaces, wearable health monitors, automotive body control modules, and smart home hub gateways requiring stable component supply across extended temperature and low-power constraints.

Supply support for 74AUP1T50GX,125 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 logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for consumer, industrial, and automotive markets.

The 74AUP (Advanced Ultra-low Power) product line targets battery-operated and thermally constrained applications requiring sub-microwatt static power, extended temperature operation, and robust signal integrity - exemplified by the 74AUP1T50GX,125's 1.5 μA ICC and −40 °C to +125 °C rating.

FAQ

Does the 74AUP1T50GX,125 require external pull-up or pull-down resistors on its input or output?

No. The Schmitt-trigger input has built-in hysteresis and does not require external biasing. The push-pull output drives both HIGH and LOW actively, eliminating need for pull-ups. Only GND and VCC connections are mandatory; pin 1 (n.c.) must remain unconnected or grounded per layout guidelines.

Can the 74AUP1T50GX,125 safely interface a 3.3 V microcontroller GPIO to a 1.8 V sensor without damage?

Yes. Its inputs tolerate up to 3.6 V regardless of VCC level, so a 3.3 V MCU output can drive pin 2 (A) directly. When powered at 1.8 V (within 2.3–3.6 V spec), output swing remains valid; however, VCC must be ≥2.3 V per datasheet - use 2.5 V or 3.3 V supply for guaranteed performance.

What is the maximum capacitive load the 74AUP1T50GX,125 can drive while maintaining specified propagation delay?

The datasheet guarantees tpd ≤7.5 ns at CL = 30 pF and VCC = 3.0 V. Driving >30 pF increases delay nonlinearly and may degrade edge rate; for 50 pF loads, measured tpd exceeds 10 ns. For heavier loads, add series termination or consider buffer fanout staging.

How does the IOFF feature behave during power sequencing when VCC ramps from 0 V to 3.3 V?

IOFF activates automatically when VCC falls below ~0.2 V, disabling the output (Y) to high-impedance state and limiting leakage to ±0.75 μA. As VCC rises above 0.2 V, normal buffer operation resumes without glitch or metastability - verified across −40 °C to +125 °C.