Nexperia USA Inc. NXS0104UMZ

Overview

NXS0104UMZ from Nexperia is a 4-bit dual-supply auto-sensing bidirectional voltage translator with open-drain I/O, supporting VCC(A) = 1.65–3.6 V and VCC(B) = 2.3–5.5 V, enabling level translation between 1.8 V/2.5 V/3.3 V/5.0 V domains. It features integrated 10 kΩ pull-ups per port, IOFF partial power-down protection, and operates across –40 °C to +125 °C - deployed in smartphone I²C peripheral interfacing where mixed-voltage SoC-to-sensor communication is required.

For engineers reviewing the NXS0104UMZ datasheet, NXS0104UMZ pinout, NXS0104UMZ application, or NXS0104UMZ equivalent, this device delivers verified 24 Mbps push-pull data rate, sub-5 ns propagation delay (A↔B), ±1 μA IOFF leakage, HBM ESD robustness up to 15 kV on B-port, and WLCSP12 footprint compatibility for space-constrained mobile PCBs.

Technical Context

The NXS0104UMZ implements a switch-type architecture using pass-gate transistors and edge-accelerating one-shot circuits to enable automatic direction sensing without external control signals. Each channel includes dual 10 kΩ internal pull-ups referenced to respective supplies, and gate biasing ensures reliable conduction when VCC(A) ≤ VCC(B).

Its IOFF circuitry actively disables outputs during partial power-down, blocking backflow current when either VCC(A) or VCC(B) is at GND. The device requires no power-up sequencing and tolerates VCC(A) ≥ VCC(B) transiently during ramp-up, simplifying system-level supply management in battery-powered portable electronics.

Key Specifications

Pinout & Package

Package: WLCSP12 (SOT8019-1), 1.36 × 1.86 × 0.60 mm, 12-bump wafer-level chip-scale package with bottom-side solder bumps; optimized for ultra-dense mobile PCB layouts and thermal performance in thin-profile assemblies.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional voltage translation applications.

Compared with TXS0104 and NXB0104, the NXS0104UMZ uniquely combines auto-direction sensing, IOFF protection, WLCSP12 packaging, and sub-3 μA quiescent current - making it the sole option meeting simultaneous requirements for ultra-low-power, space-constrained, and hot-pluggable I²C translation.

Availability

NXS0104UMZ is available at Aetrix Electronics and suitable for smartphone sensor hubs, automotive infotainment displays, and medical wearable data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for NXS0104UMZ 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 global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and mobile markets.

The NXS0104UMZ belongs to Nexperia's auto-sensing voltage translator product line, engineered specifically for robust, low-footprint I²C and 1-Wire level shifting in battery-powered and thermally demanding applications.

FAQ

What is the maximum allowable voltage difference between VCC(A) and VCC(B)?

VCC(A) must never exceed VCC(B) during normal operation - the absolute maximum is VCC(A) = VCC(B). This constraint ensures safe pass-gate biasing and prevents latch-up. The datasheet explicitly states "VCC(A) must be less than or equal to VCC(B)" in Tables 5 and 10, and violation risks permanent damage even if within individual supply limits (e.g., VCC(A)=3.6 V, VCC(B)=2.5 V is prohibited).

Can NXS0104UMZ be used with push-pull drivers on both sides?

Yes - the NXS0104UMZ supports push-pull drivers on A or B ports, though its architecture is optimized for open-drain use cases like I²C. When used with push-pull sources, ensure driver output impedance remains below 50 Ω to meet the 24 Mbps data rate and sub-5 ns propagation delay specs; otherwise, tTHL and tPHL degrade due to RC time constant effects with internal 10 kΩ pull-ups.

How does the one-shot edge accelerator affect PCB layout?

The one-shot pulse duration (~50 ns) dictates layout constraints: trace lengths must ensure round-trip reflection delay stays within that window to prevent re-triggering and signal oscillation. Use short, controlled-impedance traces (< 2 cm), avoid stubs, and minimize capacitive loading (target < 20 pF total) - heavy loads risk incomplete rising-edge acceleration and VOL degradation at high data rates.

Is external pull-up resistance required when using NXS0104UMZ?

No - each A-port and B-port pin includes a factory-trimmed 10 kΩ internal pull-up to its respective supply. External pull-ups are unnecessary for standard I²C Fast-mode (400 kHz) or 1-Wire operation. If faster rise times are needed (e.g., for 1 Mbps I²C), add parallel external resistors - but note this lowers effective VOL and increases static current, requiring verification against sink-current specs.