Nexperia USA Inc. NXS0104BQ-Q100X

Overview

NXS0104BQ-Q100 from Nexperia is a 4-bit automotive-qualified dual-supply translating transceiver with auto-direction sensing and open-drain I/O, enabling bidirectional level translation between 1.65 V–3.6 V (A-side) and 2.3 V–5.5 V (B-side). It supports up to 24 Mbps data rate in push-pull mode, features IOFF partial power-down protection, and operates across –40 °C to +125 °C for use in automotive I²C and 1-wire bus interfacing.

For engineers reviewing the NXS0104BQ-Q100 datasheet, NXS0104BQ-Q100 pinout, NXS0104BQ-Q100 application, or NXS0104BQ-Q100 equivalent, key selection considerations include its A/B supply voltage independence, auto-direction detection without external control, IOFF-enabled safe power sequencing, and DHVQFN14 package with side-wettable flanks for AOI-compatible solder joint inspection.

Technical Context

The NXS0104BQ-Q100 implements a switch-type architecture using pass-gate NMOS transistors biased at ~V_TH + V_CC(LV), eliminating need for direction-control signals. Each channel integrates dual one-shot edge accelerators that activate on input transitions exceeding 0.5×V_CCI, reducing t_TLH by driving PMOS bypass transistors for ≤70 Ω effective output impedance during rising edges.

Internal 10 kΩ pull-ups on both A and B ports reference their respective supplies; OE is active-HIGH and referenced to V_CC(A). The device enforces V_CC(A) ≤ V_CC(B) in active operation but tolerates any power-up sequence, and IOFF disables outputs when either supply drops to GND, blocking backflow current.

Key Specifications

Pinout & Package

DHVQFN14 package (SOT762-1), 2.5 × 3 × 0.85 mm body, no leads, side-wettable flanks for automated optical inspection of solder joints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NXS0104PW-Q100, the BQ variant offers superior manufacturability via side-wettable flanks; compared with NXB0104BQ-Q100, it delivers protocol-specific optimization for open-drain buses with integrated pull-ups and auto-direction-making it the sole fit for automotive I²C bridging without redesign.

Availability

NXS0104BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control, ADAS camera interfaces, infotainment head units, and electric power steering ECUs requiring stable component supply with AEC-Q100 Grade 1 compliance and extended temperature support.

Supply support for NXS0104BQ-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 focused on essential efficiency-enhancing components, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and mobile markets.

The NXS0104-Q100 product line delivers automotive-qualified voltage translators optimized for open-drain protocols like I²C and 1-wire, emphasizing auto-direction sensing, IOFF safety, and AOI-ready packaging for zero-defect automotive manufacturing.

FAQ

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

V_CC(A) must not exceed V_CC(B) during normal operation, per datasheet constraint. Absolute maximum ratings allow V_CC(A) and V_CC(B) up to +6.5 V individually, but functional operation requires V_CC(A) ≤ V_CC(B) and V_CC(A) ≤ 3.6 V. Exceeding this violates the internal gate-bias architecture and risks unreliable translation or damage.

Can NXS0104BQ-Q100 be used with push-pull drivers?

Yes, but with caveats: the device supports push-pull inputs per datasheet Section 12.3, yet its internal architecture and timing are optimized for open-drain use cases like I²C. For dedicated push-pull applications, Nexperia recommends NXB0104BQ-Q100, which provides higher drive strength and eliminates internal pull-ups that may conflict with active-high signaling.

How does the auto-direction sensing work without external control?

Each channel uses dual one-shot circuits triggered when input voltage crosses ~0.5×V_CCI. One-shot activation switches on PMOS bypass transistors to accelerate rising edges, while the pass-gate NMOS conducts bidirectionally. Direction is inferred from which side initiates the transition - no external DIR pin or clock is needed, enabling true plug-and-play level translation.

Is the thermal pad (pin 1) required to be soldered to PCB ground?

Yes - the exposed thermal pad (pin 1) must be soldered to a PCB ground plane per SOT762-1 mechanical drawing. It serves as primary thermal path and electrical reference; leaving it floating degrades thermal performance and may cause instability. The datasheet notes it is "not a ground pin" electrically, but thermal and mechanical requirements mandate GND connection for automotive reliability.