Nexperia USA Inc. 74AXP1T125GMH

Overview

74AXP1T125 from Nexperia is a dual-supply non-inverting 3-state buffer/line driver with independent input (VCCI) and output (VCCO) supply rails, enabling 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 circuitry for partial power-down protection, and operates across –40 °C to +85 °C in ultra-compact XSON6 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 voltage translation capability, sub-1 pF input capacitance, IOFF-enabled power sequencing, and compatibility with JEDEC standards JESD8-12A.01 through JESD12-6 across multiple voltage bands.

Technical Context

The device implements a single-channel non-inverting buffer with active-low 3-state control via OE, where HIGH on OE forces Y into high-impedance. Input logic thresholds are referenced to VCCI and scale with supply (e.g., VIH = 0.65×VCCI at 1.1–1.95 V), while output swing and drive strength depend on VCCO. Schmitt-trigger hysteresis ensures robust operation with slow-rising signals.

IOFF functionality actively disables both input and output paths when either supply is near 0 V, limiting backflow current to ≤±0.5 μA. Dynamic performance is characterized by propagation delay (tpd) as low as 1.9 ns (VCCI=2.5 V, VCCO=5.0 V) and transition time (tt) ≤1.0 ns, with load-dependent delay variation bounded per Figures 7–12.

Key Specifications

Pinout & Package

XSON6 plastic extremely thin small outline package (SOT886): 1 × 1.45 × 0.5 mm body, no leads, 6 terminals, thermal pad optional. Compatible with reflow soldering and space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AVC1T45DBVR and 74LVC1T45GW,125, the 74AXP1T125 uniquely combines wide dual-rail support, Schmitt-trigger noise immunity, and IOFF protection-making it the only option qualified for mixed-voltage hot-swap and partial-power-down use cases.

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 data acquisition requiring stable component supply across extended temperature ranges and dual-voltage domain interoperability.

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 leading semiconductor manufacturer specializing in high-performance, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.

The 74AXP series targets ultra-low-power, dual-supply interface applications demanding voltage translation, robust noise immunity, and safe power sequencing-particularly in space-constrained, thermally sensitive embedded systems.

FAQ

What is the minimum VCCI voltage that guarantees reliable operation?

The datasheet specifies VCCI down to 0.7 V as the absolute minimum operating voltage, with guaranteed functionality including Schmitt-trigger hysteresis and IOFF behavior across the full –40 °C to +85 °C range. At 0.75 V, VIH is defined as 0.75×VCCI and VIL as 0.25×VCCI, ensuring valid logic interpretation even at the lowest rated input supply.

Can VCCI and VCCO be powered from the same supply rail?

Yes-VCCI and VCCO may be tied together within their overlapping valid ranges (1.2 V to 2.75 V). Doing so configures the device as a standard single-supply 3-state buffer while retaining Schmitt inputs, IOFF, and ultra-low capacitance benefits. No derating or functional limitation applies in this configuration.

How does the IOFF feature behave when only VCCI is powered?

When VCCI = 0 V and VCCO > 0 V, the IOFF circuitry disables the output path, limiting IOZ to ≤±0.5 μA. Input leakage remains ≤±0.5 μA. This prevents current from flowing backward from VCCO into the unpowered input stage, satisfying IEC 61000-4-2 and automotive power-sequence compliance requirements.

Is the 74AXP1T125 compatible with 5 V TTL logic inputs?

No-inputs tolerate up to 2.75 V maximum, regardless of VCCI. Applying 5 V directly to A or OE exceeds the absolute maximum rating (VI = –0.5 V to 3.3 V) and risks permanent damage. For 5 V-tolerant interfacing, an external resistor divider or dedicated level translator is required upstream of the 74AXP1T125 input.