NXP Semiconductors NX3L4051PW-Q100J

Overview

NX3L4051PW-Q100 from NXP Semiconductors is an automotive-qualified 8-channel analog switch with break-before-make switching, 0.5 Ω typical ON resistance at 2.7 V and 4.3 V supply, Schmitt-trigger digital inputs tolerant to slow edges, and 1.8 V logic compatibility in 3.3 V systems - used for signal routing in infotainment audio paths and sensor multiplexing in vehicle body control modules.

For engineers reviewing the NX3L4051PW-Q100 datasheet, NX3L4051PW-Q100 pinout, NX3L4051PW-Q100 application, or NX3L4051PW-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, bidirectional ±350 mA continuous current handling, 1.4 V to 4.3 V supply range, low charge injection (≤15 pC), and TSSOP16 package thermal performance up to +125 °C ambient.

Technical Context

The NX3L4051PW-Q100 implements a 1-of-8 decoder-driven analog switch matrix with active-low enable (E) controlling all eight Yn–Z channels simultaneously. Its CMOS transmission gate architecture supports bidirectional signal flow between Z and any Yn terminal, with ON-state flatness ≤0.45 Ω across full voltage and temperature range.

Schmitt-trigger inputs (S1–S3, E) provide hysteresis of ≥0.4 V at VCC = 3.6 V, enabling robust operation with slow-rising microcontroller GPIOs. Input voltage tolerance extends to VCC + 0.5 V, allowing direct interfacing with higher-voltage controllers without level shifters.

Key Specifications

Pinout & Package

TSSOP16 package (SOT403-1): plastic thin shrink small outline, 16 leads, body width 4.4 mm, 0.65 mm pitch, 1.1 mm max height - optimized for automated assembly and thermal dissipation in space-constrained automotive PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with TS3A4751PWR and ADG708BRUZ, the NX3L4051PW-Q100 uniquely combines AEC-Q100 Grade 1 qualification, 1.4 V minimum supply, Schmitt-trigger inputs, and 0.5 Ω ON resistance - making it the only option qualified for direct use in safety-critical automotive signal routing without derating or supplemental protection.

Availability

NX3L4051PW-Q100 is available at Aetrix Electronics and suitable for automotive infotainment, body electronics, and ADAS subsystems requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.

Supply support for NX3L4051PW-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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The NX3L4051PW-Q100 belongs to NXP's automotive-qualified analog switch product line, designed specifically for robust signal routing in harsh-temperature, high-reliability vehicle subsystems including infotainment, body control, and driver assistance.

FAQ

What is the maximum signal voltage the NX3L4051PW-Q100 can switch?

The NX3L4051PW-Q100 supports bidirectional signal transmission with amplitude up to VCC across all channels. Absolute maximum switch voltage is VCC + 0.5 V (up to 4.6 V), per limiting values table. At VCC = 4.3 V, the device reliably routes signals from 0 V to 4.3 V without distortion - confirmed in static characteristics and functional description sections of the datasheet. This enables direct interfacing with 3.3 V and 4.2 V automotive sensors and actuators.

Does the NX3L4051PW-Q100 support 1.8 V logic control when powered at 3.3 V?

Yes, the NX3L4051PW-Q100 accepts 1.8 V logic levels on S1–S3 and E inputs while operating at VCC = 3.6 V, with VIH(min) = 1.3 V and VIL(max) = 0.5 V - verified in Table 7. Its Schmitt-trigger inputs provide noise margin and eliminate need for external level translation. Supply current increase is only 0.35 µA at VCC = 3.6 V, ensuring minimal impact on system power budget.

What is the thermal derating behavior of the NX3L4051PW-Q100 in TSSOP16 package?

For the NX3L4051PW-Q100 in TSSOP16 (SOT403-1), total power dissipation derates linearly above +60 °C at 5.5 mW/K, with a maximum rated Ptot of 500 mW at Tamb ≤ +60 °C. This is specified in Table 5, Note [4]. Designers must calculate junction temperature using θJA ≈ 110 K/W (typical for TSSOP16) and apply derating beyond 60 °C to maintain reliability in under-hood or dashboard applications.

How does break-before-make timing work in the NX3L4051PW-Q100?

The NX3L4051PW-Q100 guarantees break-before-make switching by design, with measured tb-m times of 9 ns maximum at VCC ≥ 3.6 V (Table 9). This ensures that one channel fully disconnects before another connects - critical for preventing shorts in audio mixing or sensor calibration sequences. The timing is independent of external layout and inherent to internal decoder and gate drive architecture.

Is the NX3L4051PW-Q100 pin-compatible with other members of the NX3L4051-Q100 family?

Yes, the NX3L4051PW-Q100 shares identical pin configuration (SOT403-1/TSSOP16) and function with the NX3L4051HR-Q100 (HXQFN16), as confirmed in Table 1 and Figure 4. Both variants use the same pin numbering, signal mapping (Y0–Y7, Z, E, S1–S3, VCC, GND, n.c.), and logic behavior - enabling drop-in replacement where thermal or board-space constraints permit package interchange.