Analog Devices Inc./Maxim Integrated MAX14689EWL+T

Overview

The MAX14689EWL+T from Maxim Integrated is an ultra-small, low-on-resistance (0.25Ω typ), double-pole/double-throw (DPDT) analog switch with Beyond-the-Rails™ capability, enabling distortion-free signal switching from −5.5V to +5.5V independent of VCC. It operates from a single +1.6V to +5.5V supply, draws only 40µA typical supply current at 1.6V, and supports break-before-make operation for audio routing in space-constrained portable devices.

For engineers reviewing the MAX14689EWL+T datasheet, MAX14689EWL+T pinout, MAX14689EWL+T application, or MAX14689EWL+T equivalent, this device is selected for high-fidelity, rail-independent analog switching in smartphones, tablets, and portable audio/video equipment where low THD+N (0.001% typ), ESD-hardened COM pins (±15kV HBM), and GPIO-powered operation are critical.

Technical Context

The MAX14689EWL+T implements two independent DPDT switches controlled by a single digital input (CB), supporting bidirectional signal flow across COM/NC/NO terminals. Its BiCMOS process enables ultra-low on-resistance flatness (0.001Ω typ) and stable RON over the full −5.5V to +5.5V analog range, even when VCC is as low as 1.6V.

It features integrated ESD protection on all analog paths: ±15kV HBM on COM_, NC_, and NO_; ±10kV IEC 61000-4-2 air-gap and ±8kV contact discharge on COM_; and thermal shutdown at +150°C with 25°C hysteresis - ensuring robust operation in unpowered or hot-swap scenarios.

Key Specifications

Pinout & Package

The MAX14689EWL+T uses a 1.2mm × 1.2mm, 0.4mm pitch, 9-bump wafer-level package (WLP) with bottom-side bump layout. Pin functions are defined per the manufacturer's land pattern (AN1891) and verified mechanical outline 21-0459.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX14688EWL+T, the MAX14689EWL+T adds certified IEC 61000-4-2 ESD robustness essential for end-user accessible ports; versus TMUX1574DSGR, it delivers true single-package DPDT switching with wider analog range and lower RON - reducing BOM count and signal path complexity.

Availability

The MAX14689EWL+T is available at Aetrix Electronics and suitable for smartphone audio routing, tablet jack detection, and portable media player video output requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX14689EWL+T 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

Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and consumer applications.

The MAX14689EWL+T belongs to Maxim's ultra-low-RON, Beyond-the-Rails™ analog switch family, engineered specifically for high-fidelity, space-constrained portable electronics where rail-independent signal integrity and extreme ESD resilience are mandatory.

FAQ

What is the maximum analog signal voltage the MAX14689EWL+T can handle when unpowered?

The MAX14689EWL+T supports analog signals from −5.5V to +5.5V on all NC_, NO_, and COM_ terminals even when VCC is not applied. In this state, the switches enter high-impedance mode, and the internal ESD structures remain fully functional to protect against overvoltage events without latch-up or damage.

Does the MAX14689EWL+T require external bypass capacitors, and where should they be placed?

Yes, the MAX14689EWL+T requires a 0.1µF ceramic capacitor placed between VCC and GND, mounted as close as possible to the C2 (VCC) and B2 (GND) bumps on the WLP package. This minimizes high-frequency supply noise and ensures stable switching performance, especially during fast CB transitions.

Can the MAX14689EWL+T be used to switch differential audio signals like I²S or PDM?

The MAX14689EWL+T is not designed for high-speed digital interfaces like I²S or PDM. It is optimized for analog audio/video signals up to 110MHz bandwidth with low THD+N and flat RON. For differential digital signals, dedicated high-speed switch families with matched propagation delay and impedance control are recommended instead of the MAX14689EWL+T.

What is the thermal shutdown behavior of the MAX14689EWL+T, and how does it recover?

The MAX14689EWL+T activates thermal shutdown at +150°C junction temperature and holds the switches in high-impedance state until temperature falls below +125°C (25°C hysteresis). During shutdown, CB control is ignored, and all analog paths remain isolated - protecting downstream circuitry while allowing passive cooling before automatic resumption of normal operation.

Is the MAX14689EWL+T pin-compatible with other packages in the MAX14689 family?

No, the MAX14689EWL+T (9-bump WLP) is not pin-compatible with the MAX14689AETB+T (10-pin TDFN). The WLP has a 3×3 bump array with different pin mapping and no exposed pad, while the TDFN uses a linear 10-pin layout with EP grounding. Board designs must be specific to each package variant; no mechanical or electrical interchangeability exists between them.