Nexperia USA Inc. 74AXP1T125GWH

Overview

74AXP1T125 from Nexperia is a dual-supply non-inverting 3-state buffer/line driver with independent input (VCCI) and output (VCCO) rails, enabling bidirectional voltage level translation between 0.7 V–2.75 V and 1.2 V–5.5 V domains. It features Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and operates across –40 °C to +85 °C in ultra-thin XSON6/X2SON6 packages. Used in mixed-voltage I/O interfacing between legacy and modern logic subsystems.

For engineers reviewing the 74AXP1T125 datasheet, 74AXP1T125 pinout, 74AXP1T125 application, or 74AXP1T125 equivalent, key selection criteria include dual-rail supply flexibility, sub-1 ns transition time at 5 V, IOFF leakage < ±0.5 μA during power-down, 0.6 pF input capacitance, and JEDEC-compliant interface standards across 1.1 V–5.5 V logic families.

Technical Context

The device implements a single-channel non-inverting buffer with active-low 3-state control (OE), where input logic thresholds scale with VCCI and output swing references VCCO. Its Schmitt-trigger inputs provide hysteresis of ~100 mV at 1.2 V VCCI, tolerating slow edges up to 200 ns/V.

IOFF circuitry actively disables both input and output paths when either supply drops below 0.1 V, limiting backflow current to < ±0.5 μA - critical for hot-swap and multi-rail sequencing. Dynamic power scales quadratically with VCCO and frequency via CPD = 7.1 pF (3.3 V) and CPD = 0.4 pF (1.2 V).

Key Specifications

Pinout & Package

XSON6 (SOT886/SOT1115/SOT1202) and X2SON6 (SOT1255-2) packages: 6-terminal, leadless, thermal-enhanced plastic outlines with body dimensions from 0.9 × 1.0 × 0.35 mm (SOT1115) to 1.0 × 1.45 × 0.5 mm (SOT886).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-supply buffer applications.

Compared with SN74AVC1T45DBVR and TXB0101DCKR, the 74AXP1T125 uniquely combines Schmitt-trigger noise rejection, true IOFF shutdown, and minimal 0.6 pF input loading - making it optimal for deterministic timing in mixed-voltage industrial control and low-power medical sensor nodes.

Availability

74AXP1T125 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, server memory subsystems, and medical imaging sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AXP1T125 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 logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AXP series targets ultra-low-power, space-constrained applications demanding robust voltage translation and seamless integration into heterogeneous power-domain architectures.

FAQ

What is the minimum VCCI voltage that guarantees reliable operation with a 3.3 V VCCO?

The datasheet specifies VCCI ≥ 0.7 V for full functionality. At VCCI = 0.75 V and VCCO = 3.3 V, propagation delay remains ≤16.9 ns (max) and VIH is guaranteed at 0.75×VCCI = 0.56 V, ensuring compatibility with open-drain 0.8 V logic outputs. Operation below 0.7 V risks undefined input thresholds and increased static current.

Can VCCI and VCCO be powered from the same rail without violating specifications?

Yes - the device supports identical VCCI and VCCO voltages (e.g., both at 1.8 V or 3.3 V). All electrical characteristics in Tables 7–11 are validated under matched-supply conditions, and the IOFF circuit remains fully functional even when both supplies ramp simultaneously during power-up/down sequences.

How does the Schmitt-trigger input improve system reliability in noisy environments?

The Schmitt action provides ~100 mV hysteresis at 1.2 V VCCI, meaning the input must drop below ~0.55 V (VIL) to register LOW and rise above ~0.65 V (VIH) to register HIGH. This rejects noise spikes <100 mV amplitude and eliminates chatter on slowly rising/falling signals from long cables or unterminated stubs.

Is the 74AXP1T125 compatible with 5 V TTL logic inputs when VCCI = 2.75 V?

No - the absolute maximum input voltage is clamped at 2.75 V per Table 5. Applying 5 V to A or OE exceeds VCCI + 0.5 V limit and risks permanent damage. For 5 V input compatibility, use a resistor divider or dedicated 5 V-tolerant translator like the 74LVC1T45.