Nexperia USA Inc. NXS0108BQ-Q100X

Overview

NXS0108BQ-Q100 from Nexperia is an 8-bit automotive-qualified dual-supply translating transceiver with auto-direction sensing and open-drain outputs, enabling bidirectional level translation between 1.2 V–3.6 V (A-side) and 1.65 V–5.5 V (B-side). It supports up to 110 Mbps push-pull data rates, features IOFF partial power-down protection, and operates across –40 °C to +125 °C for engine control and ADAS domain controllers.

For engineers reviewing the NXS0108BQ-Q100 datasheet, NXS0108BQ-Q100 pinout, NXS0108BQ-Q100 application, or NXS0108BQ-Q100 equivalent, key selection criteria include asymmetric supply tolerance (VCC(A) ≤ VCC(B)), AEC-Q100 Grade 1 qualification, DHVQFN20 package with side-wettable flanks, and auto-sensing directionality without external control lines.

Technical Context

The device implements dual-rail voltage translation using internal one-shot direction detection circuitry per channel, eliminating need for external direction-control signals. Its open-drain B-side outputs support wired-OR bus architectures, while A-side inputs accept up to 5.5 V regardless of VCC(A), enabling robust interfacing with higher-voltage peripherals.

IOFF circuitry actively disables outputs during power-down, blocking backflow current when either VCC(A) or VCC(B) is at 0 V - critical for hot-swap and partial-power-down automotive subsystems. ESD protection exceeds 15 kV HBM on B-port and 8 kV IEC61000-4-2 contact discharge, meeting stringent automotive EMC requirements.

Key Specifications

Pinout & Package

DHVQFN20 package (SOT764-1), 2.5 × 4.5 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0108E-Q1 and NLSX4014MUTAG, NXS0108BQ-Q100 uniquely combines AEC-Q100 Grade 1, open-drain B-side outputs, and guaranteed 110 Mbps operation at 125 °C - making it the only option qualified for powertrain and ADAS domain bridging.

Availability

NXS0108BQ-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS camera interfaces, and body control modules requiring stable component supply across extended temperature and automotive lifecycle requirements.

Supply support for NXS0108BQ-Q100 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, and consumer markets, with leadership in logic, MOSFETs, and ESD protection.

This device belongs to Nexperia's automotive logic portfolio, designed specifically for voltage-domain bridging in ISO 26262-compliant systems where functional safety, thermal resilience, and long-term supply stability are mandatory.

FAQ

What is the minimum valid voltage difference between VCC(A) and VCC(B)?

VCC(A) must be less than or equal to VCC(B) per datasheet Section 6 and Table 5. No minimum voltage difference is specified - operation is valid at VCC(A) = VCC(B) = 3.3 V, or VCC(A) = 1.2 V and VCC(B) = 1.65 V. The constraint ensures safe biasing of internal level-shift circuitry and prevents reverse current flow.

Can the NXS0108BQ-Q100 translate from 5.0 V to 1.2 V?

No. VCC(A) must be ≤ VCC(B), so 5.0 V cannot be applied to VCC(B) while powering VCC(A) at 1.2 V for A→B translation. However, B-side inputs tolerate up to 5.5 V regardless of VCC(B), allowing 5 V signals to be safely received on Bn pins when VCC(B) ≥ 1.65 V - but translation occurs only from A to B or B to A, not 5 V down to 1.2 V directly.

Does the auto-direction sensing work with slow or DC signals?

Yes. Direction detection relies on internal one-shot circuitry triggered by input transitions, not data rate. Static DC levels are maintained bidirectionally once established. The device supports DC-coupled level translation and retains state during idle periods, with no minimum frequency requirement - verified across –40 °C to +125 °C per Table 10 and Table 11.

Is GND(1) on the DHVQFN20 package electrically connected?

No. Pin 1 (GND(1)) is a thermal pad with no electrical connection. Per datasheet Section 5.1, it has "no electrical or mechanical requirement to solder." If soldered, it must remain floating or be connected to system ground - but it does not serve as a signal return path for A- or B-port logic.