Nexperia USA Inc. NXU0104BZZ

Overview

NXU0104BZZ from Nexperia is a 4-bit unidirectional dual-supply voltage level translator with Schmitt-trigger inputs, 3-state outputs, and IOFF partial power-down protection. It translates signals from A-side (VCCA = 0.9–5.5 V) to B-side (VCCB = 0.9–5.5 V), supports 250 Mbps data rates at ≥1.8 V translation, features integrated 6.5 MΩ input pull-down resistors, and enables bus isolation via OE pin referenced to either supply domain. Used in UART/SPI/JTAG I/O bridging between mixed-voltage subsystems.

For engineers reviewing the NXU0104BZZ datasheet, NXU0104BZZ pinout, NXU0104BZZ application, or NXU0104BZZ equivalent, key selection criteria include dual-supply translation range (0.9–5.5 V per rail), Schmitt-trigger noise immunity for slow/noisy inputs, IOFF-enabled safe power sequencing, 3-state output control with OE referenced to VCCA or VCCB, and thermal performance in DHXQFN14 (SOT8014-1) package.

Technical Context

The NXU0104BZZ implements fixed-direction (A→B) level translation using independent VCCA and VCCB supplies, with Schmitt-trigger inputs providing hysteresis (e.g., 0.96 V typ at 5.5 V) to reject noise on slow-rising/falling edges. Its OE input accepts logic levels referenced to either supply domain via internal VCC(MIN) circuitry, enabling robust enable/disable control during asymmetric power-up.

IOFF protection activates when either VCCA or VCCB drops below 100 mV or floats, forcing all YBn outputs into high-impedance state and blocking backflow current up to ±25 mA. The device complies with JEDEC standards JESD8-12 through JESD12-6 and achieves <10% overshoot/undershoot relative to VCCO.

Key Specifications

Pinout & Package

DHXQFN14 package (SOT8014-1), 2.0 mm × 2.0 mm × 0.48 mm body, 0.4 mm pitch, 14 terminals, exposed thermal pad (non-soldered or floating GND).

Key Features

Applications

Equivalent & Alternatives

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

Compared with NXU0204BZ and NXU0304BZ, the NXU0104BZZ provides fixed unidirectional translation optimized for UART/SPI/JTAG with minimal pin count and guaranteed low skew, making it ideal for dedicated A→B signal routing where direction is static and channel density is prioritized.

Availability

NXU0104BZZ is available at Aetrix Electronics and suitable for UART interface bridging, SPI bus translation, JTAG debug connectivity, and industrial I/O expansion requiring stable component supply across automotive and industrial temperature ranges.

Supply support for NXU0104BZZ 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 logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization.

The NXU0104 product line delivers dual-supply level translators engineered for mixed-voltage system interconnect - specifically targeting noise-immune, low-power, and power-sequencing-resilient I/O bridging in space-constrained industrial and automotive designs.

FAQ

Can the OE pin be driven from a different voltage domain than VCCA or VCCB?

Yes - the OE input is designed to accept logic levels referenced to either VCCA or VCCB via internal VCC(MIN) circuitry. This eliminates the need for external level-shifting on the enable line, simplifying control architecture in asymmetric supply systems and ensuring reliable Hi-Z assertion during power-up sequences.

What happens if one supply (e.g., VCCA) is powered down while VCCB remains active?

The device enters suspend mode: all YBn outputs transition to high-impedance, and IOFF circuitry limits backflow current to ±2 μA max. This protects downstream circuitry from unintended current paths and satisfies JEDEC JESD78D Class II latch-up immunity (>100 mA), enabling safe partial power-down operation.

Does the NXU0104BZZ support bidirectional translation like I²C?

No - the NXU0104BZZ is unidirectional (A→B only). For bidirectional protocols such as I²C or SMBus, Nexperia's NXU0304BZ (with DIR pin) is the functional alternative. The NXU0104BZZ's fixed direction optimizes propagation delay matching and reduces pin count for dedicated transmit-only paths.

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

The integrated Schmitt-trigger provides 0.96 V typical hysteresis at 5.5 V, meaning the input must swing >0.96 V between rising and falling thresholds. This prevents multiple toggles on slow or noisy edges, eliminates contact bounce artifacts in mechanical switch interfaces, and maintains clean output transitions even with >100 ns input rise/fall times - critical for industrial fieldbus reliability.