Analog Devices Inc./Maxim Integrated MAX365ETE+

Overview

MAX365ETE+ from Maxim Integrated is a precision quad SPST analog switch with normally open (NO) configuration, designed for high-fidelity signal routing in rail-to-rail ±4.5V to ±20V or +10V to +30V supply systems. It delivers <85Ω max on-resistance, <2Ω channel-to-channel matching, <10pC charge injection, <4nA off-leakage at +85°C, and sub-170ns turn-off time. It is used in sample-and-hold circuits and military radios where low distortion and tight parameter tracking are critical.

For engineers reviewing the MAX365ETE+ datasheet, MAX365ETE+ pinout, MAX365ETE+ application, or MAX365ETE+ equivalent, key selection criteria include guaranteed on-resistance flatness (∆9Ω max), ESD tolerance >2000V, bipolar/unipolar supply flexibility, and 16-pin thin QFN (5mm × 5mm) thermal performance for space-constrained industrial and defense designs.

Technical Context

The MAX365ETE+ implements four independent CMOS-controlled SPST switches with true NO logic polarity-switches close only when INx = logic high. Its silicon-gate architecture ensures matched on-resistance across channels and minimal variation over full analog signal range (±15V with ±15V supplies). Input logic is TTL/CMOS-compatible via dedicated VL pin, decoupling control voltage from analog rails.

Operation supports both split supplies (±4.5V to ±20V) and single supplies (+10V to +30V), with rail-to-rail analog signal handling up to V+ − V− ≤ 44V. Charge injection (<10pC) and off-capacitance (4pF NO/COM, 16pF ON) are characterized and guaranteed, enabling precision timing and low-crosstalk multiplexing in test equipment and guidance systems.

Key Specifications

Pinout & Package

MAX365ETE+ uses a 16-pin thin QFN package (5mm × 5mm, 0.8mm height) with exposed thermal pad connected to V+. Pin 1 is marked by a dot; pin numbering follows JEDEC standard (counterclockwise from top-left corner).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1414BRUZ and TS5A3159DCKR, the MAX365ETE+ uniquely balances precision parameter guarantees (RON match, flatness, charge injection) with wide bipolar/unipolar supply flexibility and industrial temperature range (−40°C to +85°C), making it optimal for defense, aerospace, and high-end test instrumentation where specification compliance is non-negotiable.

Availability

MAX365ETE+ is available at Aetrix Electronics and suitable for sample-and-hold circuits, military radios, and guidance and control systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX365ETE+ 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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and communications applications.

The MAX365ETE+ belongs to Maxim's precision analog switch product line, engineered specifically for applications requiring guaranteed matching, low charge injection, and robust operation across wide supply and temperature ranges.

FAQ

What is the maximum allowable supply voltage difference for MAX365ETE+?

The MAX365ETE+ has an absolute maximum V+ to V− rating of 44V. This allows rail-to-rail analog signal handling up to ±22V with split supplies or +44V with single-ended configurations, provided individual supply pins stay within their specified limits (e.g., V+ ≤ 44V referenced to V−). Exceeding 44V risks permanent damage per the Absolute Maximum Ratings table.

Does MAX365ETE+ support TTL-level logic inputs without external level shifting?

Yes - the MAX365ETE+ supports TTL-level inputs when VL is set to +5V. With VL = +5V, the device guarantees proper switching for VINH ≥ 2.4V and VINL ≤ 0.8V, matching standard TTL thresholds. This eliminates need for external translators in microcontroller-driven systems using 5V logic rails.

Can MAX365ETE+ operate with unbalanced supplies such as +24V and −5V?

Yes - the MAX365ETE+ supports unbalanced supplies. The datasheet explicitly states operation with "unbalanced supplies, such as +24V and −5V", provided V+ − V− ≤ 44V and each supply remains within its absolute max ratings (V+ ≤ 44V w.r.t. V−, V− ≥ −20V w.r.t. GND). Analog signal range adjusts accordingly.

Is the exposed thermal pad on MAX365ETE+ electrically connected, and how should it be handled?

Yes - the exposed pad (EP) on the MAX365ETE+ thin QFN package is internally connected to V+. It must be soldered to a PCB copper pour tied directly to the V+ net to ensure proper thermal dissipation and electrical stability. Leaving it floating or grounding it violates the Absolute Maximum Ratings and may cause latch-up or parametric drift.

How does MAX365ETE+ behave when power is removed from V+ and V−?

When power is removed, all switches open (high-impedance state) due to internal circuit design. However, the datasheet warns that IN_, COM_, NO_, and NC_ terminals must never exceed V+ or V− voltages - even with power off - to avoid parasitic conduction or damage. External clamping diodes may be needed in hot-swap or backplane scenarios.