Nexperia USA Inc. NXS0104GU12X

Overview

NXS0104GU12X from Nexperia is a 4-bit dual-supply translating transceiver with auto-direction sensing and open-drain I/O, enabling bidirectional level translation between 1.65 V–3.6 V (VCC(A)) and 2.3 V–5.5 V (VCC(B)) domains. It features 12-terminal XQFN packaging, IOFF partial power-down protection, ±1 μA off-state leakage, and 24 Mbps max data rate in push-pull mode. It is deployed in smartphone I²C bus interfacing between 1.8 V sensor subsystems and 3.3 V application processors.

For engineers reviewing the NXS0104GU12X datasheet, NXS0104GU12X pinout, NXS0104GU12X application, or NXS0104GU12X equivalent, key selection criteria include verified auto-direction operation under mixed-voltage I²C conditions, guaranteed 0.7 ns output skew across all four channels, IOFF-enabled safe power sequencing, and compatibility with 10 kΩ internal pull-ups on both A and B ports.

Technical Context

The NXS0104GU12X implements a switch-type voltage translation architecture using pass-gate NMOS transistors biased at ~V_TH + V_CC(LV), eliminating external direction control. Each channel integrates independent one-shot edge accelerators that activate at ~0.5×V_CCI to reduce rising-edge transition time by bypassing internal 10 kΩ pull-ups with low-impedance PMOS drivers (50–70 Ω effective).

It supports true bidirectional translation without handshake signals: data flow direction is sensed dynamically via voltage differential and edge timing between A and B ports. The device enforces V_CC(A) ≤ V_CC(B) during active operation but tolerates any power-up sequence, with automatic high-impedance shutdown when either supply drops to GND.

Key Specifications

Pinout & Package

XQFN12 package (SOT1174-1): 1.70 × 2.0 × 0.50 mm body, no leads, 12 terminals, thermal pad exposed on underside (non-electrical, floating or GND-connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0104 and NXB0104, the NXS0104GU12X uniquely combines open-drain compatibility, IOFF safety, and sub-3 ns propagation at 3.3 V/5.0 V-making it the only choice for robust, space-constrained I²C translation in automotive and portable electronics.

Availability

NXS0104GU12X is available at Aetrix Electronics and suitable for smartphone sensor hubs, automotive body controllers, wearable health monitors, and industrial I²C subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for NXS0104GU12X 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 components for automotive, industrial, mobile, and computing applications, with leadership in logic, discrete, and MOSFET technologies.

The NXS0104 belongs to Nexperia's auto-direction voltage translation product line, engineered specifically for seamless I²C and 1-wire interoperability across mixed-voltage SoC subsystems in size- and power-constrained designs.

FAQ

Can NXS0104GU12X translate between 1.2 V and 3.3 V domains?

No. VCC(A) minimum is 1.65 V per datasheet Section 10; operation below this violates recommended conditions and risks unreliable auto-direction sensing and increased VOL. For 1.2 V interfaces, consider NXSA104 or dedicated ultra-low-voltage translators.

Is external pull-up resistance required on A or B ports?

No-each A and B port has an integrated 10 kΩ pull-up to its respective supply. External pull-ups are only needed if faster rise times or stronger drive strength are required, though they will lower effective VOL due to parallel resistance.

What happens if VCC(A) exceeds VCC(B) during normal operation?

The device may fail to translate correctly or exhibit increased leakage; Section 10 explicitly states VCC(A) must be ≤ VCC(B) during active use. However, power-up sequencing is unrestricted-either supply may ramp first without damage.

Does NXS0104GU12X support hot-swap insertion while powered?

Yes-its IOFF circuitry disables outputs and blocks back-current when either VCC(A) or VCC(B) is removed, satisfying JESD78B Class II latch-up immunity and enabling safe field-replaceable module designs.