Nexperia USA Inc. NXU0304GU12X

Overview

NXU0304GU12X from Nexperia is a 4-bit dual-supply voltage level translating buffer with Schmitt-trigger inputs and 3-state outputs, designed for bidirectional asynchronous bus translation between 0.9 V–5.5 V domains. It supports unidirectional A→B (3 channels) and B→A (1 channel) data flow, features integrated 6.5 MΩ input pull-downs, IOFF protection, and operates across –40 °C to +125 °C for industrial embedded I/O bridging.

For engineers reviewing the NXU0304GU12X datasheet, NXU0304GU12X pinout, NXU0304GU12X application, or NXU0304GU12X equivalent, key selection criteria include dual-rail supply flexibility (VCCA/VCCB = 0.9–5.5 V), Schmitt-trigger noise immunity, 250 Mbps max data rate (≥1.8 V), 12 mA output drive at 5 V, and suspend-mode behavior during partial power-down.

Technical Context

The device implements independent A-side (VCCA-referenced) and B-side (VCCB-referenced) logic domains with four data paths: A1–A3 → YB1–YB3 (A-to-B), and B4 → YA4 (B-to-A). The OE input is referenced to either VCCA or VCCB via internal VCC(MIN) circuitry, enabling robust power-up/down control without sequencing requirements.

Schmitt-trigger inputs provide hysteresis (e.g., 0.96 V typ at 5.5 V), ensuring reliable operation with slow or noisy signals. IOFF circuitry actively blocks backflow current when either supply drops below 100 mV or floats, enforcing high-impedance isolation in suspend mode - critical for hot-swap and mixed-voltage system integrity.

Key Specifications

Pinout & Package

XQFN12 package (SOT1174-1): 1.70 × 2.0 × 0.50 mm, 12-terminal leadless quad flat, thermal pad exposed on bottom (non-electrical, optional GND connection).

Key Features

Applications

Equivalent & Alternatives

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

Compared with NXU0104PW and NXU0204BQ, NXU0304GU12X delivers the smallest footprint (1.7 × 2.0 mm), lowest profile (0.50 mm), and optimal balance of thermal performance (172 °C/W) and board-area efficiency for space-constrained portable and medical electronics.

Availability

NXU0304GU12X is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, consumer wearable debug ports, and medical IoT edge gateways requiring stable component supply across extended temperature ranges and mixed-voltage architectures.

Supply support for NXU0304GU12X 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 energy-efficient components for automotive, industrial, and consumer markets.

The NXU0304 product line targets mixed-voltage system integration, providing robust, pin-efficient level translation with built-in noise immunity and power-aware protection for next-generation embedded interfaces.

FAQ

Can NXU0304GU12X translate between 1.2 V and 5.0 V simultaneously?

Yes. VCCA can be set to 1.2 V (powering A1–A3/YA4) and VCCB to 5.0 V (powering B4/YB1–YB3), enabling full bidirectional translation. The device guarantees 250 Mbps data rate and 12 mA drive at 5 V, with Schmitt-trigger thresholds scaling proportionally to each supply.

What happens if OE is left unconnected during power-up?

The OE pin has no internal pull-up; leaving it floating results in undefined logic state until VCCA/VCCB stabilize. However, the datasheet explicitly states OE may be left floating or pulled down to ensure Hi-Z during power transitions - internal design tolerates this safely without latch-up or damage.

Does the XQFN12 package require solder paste on the thermal pad?

No. The exposed thermal pad (pin 1 index area) has no electrical function. It may remain unsoldered, be floated, or optionally connected to GND for improved thermal dissipation - no solder paste is mandatory per Nexperia's SOT1174-1 mechanical specification.

How does IOFF protection behave when only VCCA is powered?

When VCCA is powered (e.g., 3.3 V) and VCCB is disconnected (floating), the device enters suspend mode: all outputs (YB1–YB3, YA4) go Hi-Z, and IOFF circuitry limits leakage to ±2 μA max. Inputs remain protected; no back-current flows into the unpowered B-side domain.