Nexperia USA Inc. NXS0102GTX

Overview

NXS0102 from Nexperia is a 2-bit dual-supply bidirectional voltage-level translating transceiver with auto-direction sensing and open-drain I/O architecture. It enables seamless interfacing between 1.8 V, 2.5 V, 3.3 V, and 5.0 V domains using independent VCC(A) (1.65–3.6 V) and VCC(B) (2.3–5.5 V) supplies, supports up to 24 Mbps data rate in push-pull mode, and features integrated IOFF circuitry for partial power-down protection. It is deployed in I²C and 1-wire bus translation within smartphone baseband subsystems.

For engineers reviewing the NXS0102 datasheet, NXS0102 pinout, NXS0102 application, or NXS0102 equivalent, key selection considerations include its auto-sensing direction control, dual-rail supply flexibility, guaranteed 24 Mbps operation at 3.3 V/5.0 V, IOFF-enabled safe power sequencing, and internal 10 kΩ pull-up resistors on both A and B ports - critical for robust low-voltage I²C signal integrity in space-constrained mobile designs.

Technical Context

The NXS0102 implements a switch-type voltage translation architecture using pass-gate NMOS transistors biased at ~V_TH + VCC(A), eliminating external direction-control signals. Its one-shot edge-acceleration circuit activates on input transitions crossing ~0.5×VCCI, delivering sub-7 ns propagation delays (A↔B) and <0.8 ns output skew across temperature ranges up to +125 °C.

Each port includes dedicated internal 10 kΩ pull-up resistors referenced to its respective supply rail (VCC(A) for A1/A2, VCC(B) for B1/B2), and OE is active-HIGH, referenced solely to VCC(A). The device enforces VCC(A) ≤ VCC(B) during operation but tolerates any power-up sequence without damage.

Key Specifications

Pinout & Package

Available in three compact packages: VSSOP8 (SOT765-1, 2.3 mm body width), XSON8 (SOT833-1, 1.0 × 1.95 × 0.5 mm), and WLCSP8 (SOT8023-1, 0.75 × 1.55 × 0.60 mm). All variants are 8-terminal, surface-mount, and rated for -40 °C to +125 °C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0102YZPR and NXH0102UK, the NXS0102 delivers optimal integration for space-constrained I²C applications via built-in pull-ups and proven auto-direction stability, while offering broader temperature qualification (-40 °C to +125 °C) than TXS0102 and lower cost than NXH0102 where fail-safe reset is unnecessary.

Availability

NXS0102 is available at Aetrix Electronics and suitable for smartphone baseband interfaces, I²C sensor hubs, industrial PLC I/O expansion, and automotive infotainment display links requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for NXS0102 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 essential efficiency technologies, delivering high-performance, reliable, and scalable components for automotive, industrial, and consumer markets.

The NXS0102 belongs to Nexperia's dual-supply voltage translator product line, engineered specifically for robust, low-latency bidirectional level shifting in open-drain bus architectures such as I²C and 1-wire - emphasizing integration, ESD resilience, and simplified power management.

FAQ

Can NXS0102 translate between 1.8 V and 5.0 V without external components?

Yes. With VCC(A) = 1.8 V and VCC(B) = 5.0 V, the NXS0102 performs bidirectional translation using its internal pass-gate architecture and auto-direction sensing. No external MOSFETs, resistors, or direction-control logic are needed - only the two supply rails, GND, and signal connections. Internal 10 kΩ pull-ups on both sides ensure proper bus idle states.

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

The datasheet explicitly prohibits VCC(A) > VCC(B) during active operation, as it risks forward-biasing internal protection diodes and degrading IOFF performance. While power-up sequencing is unrestricted, sustained violation may increase leakage current beyond ±2 μA and compromise ESD robustness. Always enforce VCC(A) ≤ VCC(B) in system power design.

Is NXS0102 suitable for SPI bus translation?

No. The NXS0102 is optimized for open-drain, multi-master buses like I²C and 1-wire. Its auto-direction sensing relies on detecting bus contention and edge transitions typical of wired-AND signaling. SPI's push-pull, unidirectional, clock-synchronous nature causes unpredictable direction arbitration and violates the device's functional table - use dedicated SPI translators like NXH0104 instead.

How does the one-shot edge accelerator affect signal integrity?

The one-shot circuit reduces rising-edge transition time (tTLH) to ≤13.5 ns (B port, 5 V) by temporarily lowering output impedance to 50–70 Ω during edge detection. This improves rise time without overshoot, but requires trace lengths short enough that reflection round-trip delay stays within the one-shot pulse duration (~35 ns) to prevent re-triggering and signal distortion.