Analog Devices Inc./Maxim Integrated MAX14762ETB+T

Overview

MAX14762ETB+T from Maxim Integrated is a dual-channel, above- and below-the-rails analog switch with ±25V signal range, 20Ω max on-resistance, <10nA max on-leakage current, and operation from a single +3.0V to +5.5V supply. It serves as a high-voltage bidirectional signal routing device in industrial instrumentation and medical measurement systems where rail-to-rail or beyond-rail signal integrity is critical.

For engineers reviewing the MAX14762ETB+T datasheet, MAX14762ETB+T pinout, MAX14762ETB+T application, or MAX14762ETB+T equivalent, this page delivers verified electrical parameters, thermal shutdown behavior, leakage performance across temperature, TDFN-10 package layout guidance, and real-world switching timing under ±10V analog loads.

Technical Context

The MAX14762ETB+T integrates three charge pumps-5V regulated, +35V high-voltage, and -27V high-voltage-to bias internal switches for operation beyond supply rails. Its dual SPST topology enables independent control of two analog paths via EN1 and EN2 inputs with break-before-make isolation not applicable (SPST architecture).

It supports bidirectional current flow up to ±25mA per channel, features 58mΩ typical on-resistance flatness over -25V to +25V input range, and includes thermal shutdown at +154°C with 24°C hysteresis-critical for unattended industrial sensor front-ends operating in extended temperature environments.

Key Specifications

Pinout & Package

MAX14762ETB+T is housed in a 10-pin, 3mm × 3mm TDFN-EP package with exposed pad connected to VN. The pinout supports independent dual SPST switching with dedicated enable, common, and normally closed/open terminals per channel.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1422BRUZ and TMUX6222RTER, the MAX14762ETB+T uniquely delivers ±25V signal handling with on-chip bias generation and thermal protection-enabling compact, self-contained high-voltage analog routing without auxiliary power or discrete protection circuitry.

Availability

MAX14762ETB+T is available at Aetrix Electronics and suitable for industrial measurement systems, instrumentation systems, medical monitoring devices, and automated test equipment requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MAX14762ETB+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, medical, and communications applications.

The MAX14762ETB+T belongs to Maxim's high-voltage analog switch product line, engineered specifically for signal routing in systems where input voltages exceed supply rails-replacing opto-relays and discrete MOSFET solutions with integrated, low-leakage, thermally robust alternatives.

FAQ

What is the maximum continuous current rating per channel of the MAX14762ETB+T?

The MAX14762ETB+T supports ±25mA continuous current through each switch channel (A1/B1 and A2/B2). This rating applies across the full -25V to +25V signal range and is validated under thermal shutdown conditions. Exceeding ±25mA may trigger thermal shutdown or degrade long-term reliability. The MAX14762ETB+T datasheet specifies this limit in the Absolute Maximum Ratings table and confirms it in DC Characteristics under Continuous Current Through Switch (IA).

Does the MAX14762ETB+T require external capacitors, and if so, what values and placement are recommended?

Yes, the MAX14762ETB+T requires three external bypass capacitors: a 1µF ceramic capacitor between VCC and GND, and 0.1µF/50V ceramic capacitors between VP and GND and between VN and GND. These must be placed as close as possible to their respective pins to stabilize internal charge pumps and suppress noise. The exposed pad (EP) must be soldered to the VN plane for thermal performance. These requirements are specified in the Pin Description and Applications Information sections of the MAX14762ETB+T datasheet.

Can the MAX14762ETB+T operate with input signals present before power is applied?

Yes, the MAX14762ETB+T tolerates ±25V on A1, A2, B1, and B2 pins even when VCC = 0V. In this unpowered state, DC input leakage remains typically below 1µA, satisfying safety-critical hot-swap and maintenance scenarios. However, large dv/dt transients must be limited to ≤3V/µs to prevent destructive charging currents into the VP/VN bypass capacitors. This nonpowered behavior is explicitly characterized in the MAX14762ETB+T Applications Information section.

What is the function of the VP and VN pins on the MAX14762ETB+T, and are they intended as power outputs?

The VP and VN pins on the MAX14762ETB+T are internal high-voltage bias generator outputs (+35V and -27V), not general-purpose power supplies. They require dedicated 0.1µF/50V ceramic bypass capacitors to GND and must not be loaded by external circuitry. Their sole purpose is to bias the internal analog switches for beyond-the-rails operation. The MAX14762ETB+T datasheet states: "VP and VN are not intended as a power supply for other circuitry," and misuse can compromise switching performance or cause instability.

How does thermal shutdown work in the MAX14762ETB+T, and can it be disabled?

The MAX14762ETB+T features autonomous thermal shutdown that activates at +154°C junction temperature and resets after cooling by 24°C hysteresis. It cannot be disabled-it is a hardwired safety feature protecting the die during overload, poor PCB thermal design, or ambient overheating. Once triggered, the switches disable until temperature falls to +130°C. This behavior is guaranteed across the -40°C to +85°C operating range and documented in the MAX14762ETB+T Electrical Characteristics table under Thermal Protection.