Nexperia USA Inc. NXU0304BQ-Q100X

Overview

NXU0304BQ-Q100 from Nexperia is a 4-bit dual-supply voltage level translating buffer with Schmitt-trigger inputs and 3-state outputs, designed for bidirectional bus isolation in automotive systems. It supports unidirectional translation from A-bus to B-bus (3 channels) and B-bus to A-bus (1 channel), operates across VCCA/VCCB = 0.9 V–5.5 V, delivers 250 Mbps max data rate at ≥1.8 V → 5 V, and features IOFF protection for partial power-down. It is used in automotive infotainment domain controllers interfacing 1.8 V microcontrollers with 3.3 V sensor buses.

For engineers reviewing the NXU0304BQ-Q100 datasheet, NXU0304BQ-Q100 pinout, NXU0304BQ-Q100 application, or NXU0304BQ-Q100 equivalent, key selection criteria include dual-rail voltage flexibility, Schmitt-trigger noise immunity on slow/noisy inputs, OE-referenced-to-either-supply capability, and AEC-Q100 Grade 1 qualification for under-hood operation.

Technical Context

The device implements independent A-side (VCCA) and B-side (VCCB) supply domains with integrated Schmitt-trigger inputs (VT+ = 0.71 V typ @ 1.1 V, VH = 0.31 V typ @ 1.1 V) and rail-to-rail 3-state outputs. Input pull-down resistors (6.5 MΩ typical) prevent floating states without external biasing.

Its IOFF circuitry ensures <±2 µA off-state leakage when either VCCA or VCCB drops below 100 mV or floats, enabling safe hot-plug and power sequencing independence. Output enable (OE) is referenced to VCCA or VCCB via internal VCC(MIN) logic, allowing direct connection to either supply domain without level shifters.

Key Specifications

Pinout & Package

DHVQFN14 package (SOT762-1), 2.5 × 3 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NXU0104BQ-Q100 and NXU0204BQ-Q100, the NXU0304BQ-Q100 provides explicit OE control for deterministic bus isolation, full 4-channel capacity for parallel interfaces, and guaranteed 250 Mbps performance - making it optimal for automotive domain controllers requiring precise timing and mixed-voltage interoperability.

Availability

NXU0304BQ-Q100 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS sensor hubs, and electric power steering ECUs requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.

Supply support for NXU0304BQ-Q100 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-performance, high-reliability standard products including logic, discretes, and MOSFETs for automotive, industrial, and mobile markets.

The NXU0304-Q100 product line delivers AEC-Q100-qualified dual-supply level translators optimized for noise-immune, low-power, and hot-plug-capable communication between heterogeneous voltage domains in modern vehicle ECUs.

FAQ

Can NXU0304BQ-Q100 translate between 1.2 V and 5.0 V rails?

Yes. The device supports independent VCCA and VCCB supplies from 0.9 V to 5.5 V, enabling direct 1.2 V ↔ 5.0 V translation. Static characteristics confirm VT+ = 0.44 V and VT− = 0.17 V at 1.1 V supply, ensuring reliable switching across this range. Maximum data rate is 100 Mbps for 1.1 V → 5.0 V up-translation per Table 12.

What happens to outputs when VCCA is powered but VCCB is disconnected?

When VCCB is disconnected (floating), the device enters suspend mode: all outputs (YB1–YB3, YA4) transition to high-impedance OFF-state within nanoseconds, and IOFF circuitry limits leakage to <±2 µA. This prevents back-current into the powered VCCA domain and protects downstream circuitry.

Is external pull-up required on Schmitt-trigger inputs?

No. Each input includes a 6.5 MΩ internal pull-down resistor that prevents undefined states. An external pull-up is only needed if active HIGH logic is required, and must be ≤1 MΩ to avoid contention with the internal resistor. The Schmitt hysteresis (0.31 V typ @ 1.1 V) inherently rejects slow or noisy edges.

Does OE pin require level shifting when VCCA ≠ VCCB?

No. The OE input is referenced to either VCCA or VCCB via internal VCC(MIN) circuitry. It accepts logic HIGH at ≥0.7×VCCI (where VCCI is the active supply domain), allowing direct connection to either rail without external level shifters - confirmed in Section 8.2 and Table 3.