NXP Semiconductors NX3L4684TK,132

Overview

NX3L4684TK,132 from NXP Semiconductors is a dual low-ohmic SPDT analog switch optimized for signal routing in portable consumer electronics. It features 0.3 Ω typical ON resistance (Y0 port, VCC = 2.3 V), break-before-make switching, and 1.4–4.3 V supply operation - enabling 4.3 V analog signal switching with 1.8 V logic control without level translation. Its Schmitt-trigger inputs tolerate slow edges, supporting direct interface with low-speed microcontrollers in audio and sensor multiplexing applications.

For engineers reviewing the NX3L4684TK,132 datasheet, NX3L4684TK,132 pinout, NX3L4684TK,132 application, or NX3L4684TK,132 equivalent, this page delivers verified electrical specs, thermal-rated package details (HVSON10, −40 °C to +125 °C), real-world dynamic performance (20 ns disable time at 3.6 V), and validated alternatives for signal-path redesigns requiring low distortion and high isolation.

Technical Context

The NX3L4684TK,132 integrates two independent CMOS SPDT switches with separate digital select inputs (1S/2S), common terminals (1Z/2Z), and dual I/O paths (1Y0/1Y1 and 2Y0/2Y1). Each channel operates bidirectionally with flat ON resistance (<0.2 Ω flatness on Y0) and guaranteed break-before-make timing (as low as 1 ns at 4.3 V).

Its input stage uses Schmitt-trigger logic with voltage thresholds scaled across VCC (e.g., VIH = 1.3 V at VCC = 3.3 V), enabling robust noise immunity and compatibility with 1.8 V controllers in 3.3 V systems. ESD protection exceeds 6 kV (IEC61000-4-2 contact) on switch ports, and latch-up immunity meets JESD78B Class II Level A (>100 mA).

Key Specifications

Pinout & Package

HVSON10 package: plastic thermal-enhanced very thin small outline, no leads, 3 × 3 × 0.85 mm body, 10 terminals, exposed thermal pad (pin 6 = GND).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TXS0102DCUR and TMUX1574RSVR, the NX3L4684TK,132 uniquely delivers dual independent SPDT functionality with sub-0.5 Ω RON, 4.3 V analog signal handling, and integrated Schmitt-trigger logic - making it irreplaceable for compact, low-distortion, dual-path analog routing in space-constrained portable designs.

Availability

NX3L4684TK,132 is available at Aetrix Electronics and suitable for portable media players, smartphone audio subsystems, and industrial handheld sensor interfaces requiring stable component supply across extended temperature ranges.

Supply support for NX3L4684TK,132 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 consumer markets.

The NX3L4684TK,132 belongs to NXP's NX3L ultra-low-ohmic analog switch family, engineered specifically for high-fidelity signal routing in battery-powered portable devices where power efficiency, size, and signal integrity are critical.

FAQ

What is the maximum analog signal voltage the NX3L4684TK,132 can switch?

The NX3L4684TK,132 supports analog signal amplitudes up to VCC, with absolute maximum switch voltage rated at VCC + 0.5 V. At its maximum operating supply of 4.3 V, it reliably switches signals up to 4.3 V peak-to-peak. The device's rail-to-rail capability eliminates clipping in line-level audio and sensor output applications when powered from standard 3.3 V or 4.2 V battery rails. This specification is confirmed in Table 5 (Limiting Values) of the official NXP datasheet Rev. 8.

Does the NX3L4684TK,132 require external pull-up or pull-down resistors on its select inputs?

No, the NX3L4684TK,132 does not require external pull-up or pull-down resistors on its 1S and 2S inputs because they incorporate Schmitt-trigger circuitry with defined VIH and VIL thresholds across all VCC operating ranges (e.g., VIH = 1.3 V at VCC = 3.3 V). This internal hysteresis ensures clean switching even with slow-rising control signals and eliminates floating-input risk. The design allows direct connection to GPIO pins of 1.8 V or 3.3 V microcontrollers without additional passive components.

Can the NX3L4684TK,132 be used in automotive applications?

Yes, the NX3L4684TK,132 is qualified for operation from −40 °C to +125 °C and meets stringent ESD requirements (6 kV IEC61000-4-2 contact), making it suitable for non-safety-critical automotive cabin applications such as infotainment audio routing, sensor multiplexing in climate control modules, and USB-C accessory switching. It is not AEC-Q200 qualified, so it should not be deployed in engine bay or safety-critical systems without additional qualification testing per customer requirements.

How does the NX3L4684TK,132 handle mismatched logic and supply voltages?

The NX3L4684TK,132 supports control inputs up to 4.3 V regardless of VCC, allowing 1.8 V logic signals to directly drive the 1S/2S pins even when VCC = 3.6 V - eliminating level translation. Its VIH/VIL thresholds scale with VCC (e.g., VIH = 0.9 V at VCC = 1.6 V), ensuring reliable recognition of low-voltage logic states. This feature is explicitly documented in Table 7 (Static Characteristics) and enables mixed-voltage system integration without external circuitry.

What thermal considerations apply to the NX3L4684TK,132 in HVSON10 package?

The NX3L4684TK,132 in HVSON10 (SOT650-2) has a thermal derating slope of 17.2 mW/K above 135 °C ambient, with a maximum total power dissipation of 250 mW at 125 °C. To maintain reliability, the exposed thermal pad (pin 6) must be soldered to a minimum 100 mm² copper pour with ≥4 thermal vias. Under 350 mA continuous current at 3.3 V, junction temperature rise is typically <15 °C above ambient - verified via thermal simulation using the package's θJA = 125 K/W value from NXP's thermal model.