Nexperia USA Inc. 74AXP1T34GWH

Overview

74AXP1T34GWH from Nexperia is a dual-supply translating buffer IC with independent input (VCCI) and output (VCCO) supply 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 circuitry for partial power-down protection, and operates across –40 °C to +85 °C. Used in mixed-voltage I²C, GPIO, and sensor interface circuits where logic-level bridging is required.

For engineers reviewing the 74AXP1T34GWH datasheet, 74AXP1T34GWH pinout, 74AXP1T34GWH application, or 74AXP1T34GWH equivalent, this device supports low-power, high-noise-immunity signal translation in space-constrained embedded systems - especially where VCCI/VCCO domain isolation, sub-1 μA static current, and <10% overshoot/undershoot are critical selection criteria.

Technical Context

The 74AXP1T34GWH implements a single-channel unidirectional buffer with input referenced to VCCI and output referenced to VCCO. Its Schmitt-trigger input threshold adapts dynamically to VCCI (e.g., VIH = 0.65×VCCI at 1.1–1.95 V), ensuring robust switching despite slow edges. The IOFF circuit actively disables the output when either supply is near 0 V, blocking backflow current during power sequencing.

It delivers propagation delays as low as 1.6 ns (VCCI = 2.5 V, VCCO = 5.0 V, Tamb = 25 °C) and maintains stable timing across load capacitances up to 120 pF. Input and output capacitances are tightly controlled at CI = 0.6 pF and CO = 1.8 pF, minimizing signal distortion in high-speed digital interfaces.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) package: plastic thin shrink small outline, 5-lead, 1.25 mm body width, pin 1 index in lower-left corner below marking code 'rQ'.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1T34DBVR and TXB0101DCKR, the 74AXP1T34GWH uniquely supports ultra-low-VCCI operation down to 0.7 V, integrates IOFF for robust power sequencing, and provides Schmitt-trigger noise rejection - making it the sole choice for mixed-voltage embedded systems requiring guaranteed sub-μA shutdown behavior and <2 ns delay stability.

Availability

74AXP1T34GWH is available at Aetrix Electronics and suitable for industrial sensor interfaces, I²C bus translation, low-power wearable GPIO expansion, and automotive body control modules requiring stable component supply across extended temperature ranges.

Supply support for 74AXP1T34GWH 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 high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AXP1T34GWH belongs to Nexperia's AXP ultra-low-power logic family, engineered specifically for energy-constrained, mixed-voltage embedded systems where supply rail independence and zero-power-state safety are mandatory design requirements.

FAQ

Can 74AXP1T34GWH translate from 5.5 V to 0.7 V?

No. The 74AXP1T34GWH is unidirectional: input (A) is referenced to VCCI, output (Y) to VCCO. To translate from 5.5 V down to 0.7 V, VCCO would need to be 5.5 V and VCCI 0.7 V - but the input cannot tolerate 5.5 V (absolute max VI = 3.3 V). It supports only low-to-high or same-domain translation.

What happens to the output when VCCI = 0 V and VCCO = 3.3 V?

When VCCI drops to 0 V, the IOFF circuit activates, forcing the Y output into high-impedance (Z) state regardless of A input or VCCO voltage. This prevents current flow from the 3.3 V domain into the unpowered input side, satisfying JEDEC JESD78D Class II latch-up immunity.

Is the Schmitt-trigger hysteresis adjustable?

No. Hysteresis is fixed and internally generated, scaling with VCCI (e.g., ~150 mV at VCCI = 1.2 V, ~300 mV at VCCI = 2.5 V). It is not user-configurable but ensures consistent noise margin across the full 0.7–2.75 V VCCI range without external components.

Does 74AXP1T34GWH support hot-swap insertion?

Yes. The combination of IOFF, ±2000 V HBM ESD rating, and rail-to-rail input tolerance (VI up to 2.75 V even when VCCI = 0 V) enables safe hot-swap operation in modular backplane or pluggable sensor designs, provided VCCO is stable before asserting A.