Nexperia USA Inc. NXB0102DCH

Overview

NXB0102 from Nexperia is a 2-bit dual-supply bidirectional voltage-level translating transceiver with auto-direction sensing and 3-state output control, operating across VCC(A) = 1.2–3.6 V and VCC(B) = 1.65–5.5 V. It enables seamless interfacing between 1.2 V/1.5 V/1.8 V/2.5 V/3.3 V and 5.0 V logic domains without external direction control, supporting up to 100 Mbps data rate at 3.3 V/5.0 V and featuring IOFF partial power-down protection.

For engineers reviewing the NXB0102 datasheet, NXB0102 pinout, NXB0102 application, or NXB0102 equivalent, key selection considerations include its auto-sensing architecture, asymmetric supply range compatibility, guaranteed 40–100 Mbps operation across temperature (−40 °C to +125 °C), low propagation delay (as low as 0.8 ns A→B at 3.3 V/5.0 V), and robust ESD immunity (15 kV HBM on B port).

Technical Context

The NXB0102 implements dual-rail I/O architecture with independent A- and B-side voltage references (VCC(A) and VCC(B)), where An/OE pins are referenced to VCC(A) and Bn pins to VCC(B). Its auto-direction sensing relies on internal one-shot circuits that detect edge transitions to dynamically enable PMOS/NMOS output drivers - no external DIR signal required.

Each channel includes weak-output drivers (70 Ω typical at 1.2–1.8 V, 40 Ω at 3.3–5.0 V) designed to be overdriven during bus contention, enabling true bidirectional translation. The IOFF circuit ensures sub-±2 μA power-off leakage when either supply is inactive, satisfying partial power-down requirements in mixed-voltage systems.

Key Specifications

Pinout & Package

VSSOP8 (SOT765-1) package: 8-pin plastic very thin shrink small outline package, 2.3 mm body width, lead pitch 0.5 mm, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0102DCUR and SN74AVC2T244RSWR, the NXB0102 delivers autonomous bidirectional operation, superior ESD robustness, and guaranteed safe power-down behavior - making it optimal for space-constrained, mixed-voltage embedded systems requiring zero-direction-control design simplicity.

Availability

NXB0102 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical device interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for NXB0102 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, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in high-volume applications.

The NXB series targets mixed-voltage system integration, with the NXB0102 specifically engineered to eliminate direction-control overhead in compact, thermally sensitive, and safety-critical embedded interfaces.

FAQ

Can NXB0102 translate between 1.2 V and 5.0 V without external components?

Yes. The NXB0102 supports VCC(A) = 1.2 V and VCC(B) = 5.0 V simultaneously, with A-side I/Os referenced to 1.2 V and B-side I/Os referenced to 5.0 V. Its auto-direction sensing and integrated one-shot drivers require no external resistors, capacitors, or direction-control logic - enabling direct, component-free level translation.

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

VCC(A) must not exceed VCC(B) during active operation per datasheet specification (Section 7, Table 4 footnote [1]). Exceeding this violates absolute maximum ratings and risks latch-up or accelerated wear. However, during power-up/power-down sequences, transient VCC(A) ≥ VCC(B) is tolerated and causes no damage due to internal protection circuitry.

Does NXB0102 support I²C open-drain bus topologies?

No. The NXB0102 is designed for push-pull CMOS/TTL-level translation and lacks internal pull-up capability or open-drain output configuration. It cannot replace dedicated I²C level shifters like PCA9306 or TXS0102. For I²C, use purpose-built devices with bus-hold or weak-pull functionality.

How does the IOFF feature behave when only VCC(B) is powered?

When VCC(B) = 5.0 V and VCC(A) = 0 V, the IOFF circuit disables all A-side outputs and limits leakage to ±2 μA (max) across A1/A2 pins. B-side I/Os remain functional but are isolated from A-side logic - preventing back-current flow into the unpowered domain while preserving B-port usability.