Analog Devices Inc./Maxim Integrated MAX4665ESE

Overview

MAX4665ESE from Maxim Integrated is a quad single-pole single-throw (SPST) analog switch with normally open (NO) configuration, designed for rail-to-rail signal routing in precision analog systems. It delivers 5Ω maximum on-resistance, 0.5Ω maximum on-resistance match between channels, and 5nA maximum off-leakage current at +85°C, enabling low-distortion audio-signal routing and reed-relay replacement in test equipment.

For engineers reviewing the MAX4665ESE datasheet, MAX4665ESE pinout, MAX4665ESE application, or MAX4665ESE equivalent, key selection criteria include guaranteed R_ON flatness (≤0.5Ω over ±10V signal range), TTL/CMOS-compatible control inputs, dual-supply (±4.5V to ±20V) or single-supply (+4.5V to +36V) operation, and ESD protection >2kV per Method 3015.7.

Technical Context

The MAX4665ESE implements CMOS-based SPST switching architecture with four independent NO switches, each featuring matched and flat on-resistance across the full analog signal range. Its control logic accepts standard TTL/CMOS thresholds (0.8V low, 2.4V high) and operates with separate logic supply (VL) referenced to GND, decoupling digital interface from analog supply rails.

It supports both single-supply (V+ = +4.5V to +36V, V− = GND) and dual-supply (V+ = ±4.5V to ±20V) configurations, with internal protection diodes clamping signals exceeding V+ or V−. Break-before-make timing is not guaranteed-only the MAX4666 variant provides that feature.

Key Specifications

Pinout & Package

MAX4665ESE is housed in a 16-pin narrow SOIC (SO/DIP) package, rated for −40°C to +85°C operation. Pin assignments are fully defined in Maxim's 19-1504 Rev 0 datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1414BRUZ and TS5A3157DCKR, the MAX4665ESE uniquely balances wide supply flexibility (±4.5V to ±20V or +4.5V to +36V), separate VL logic supply, guaranteed R_ON flatness, and −40°C to +85°C operation - making it the preferred choice for industrial, test, and avionics analog multiplexing where reliability and signal fidelity across voltage domains are essential.

Availability

MAX4665ESE is available at Aetrix Electronics and suitable for automatic test equipment, avionics signal conditioning, audio-signal routing, and PBX/PABX telephony interfaces requiring stable component supply across extended temperature ranges and mixed-supply environments.

Supply support for MAX4665ESE 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.

The MAX4664/MAX4665/MAX4666 family was engineered for precision analog signal routing in environments demanding low distortion, high reliability, and wide supply voltage tolerance - directly addressing limitations of mechanical relays and earlier-generation analog switches.

FAQ

What is the maximum analog signal voltage range supported by the MAX4665ESE?

The MAX4665ESE supports rail-to-rail analog signals from V− to V+. In dual-supply mode (e.g., V+ = +15V, V− = −15V), this enables ±15V signal handling. In single-supply mode (e.g., V+ = +12V, V− = GND), it supports 0V to +12V. Absolute maximum ratings allow V+ to V− differential up to 44V, but signal range remains bounded by the supply rails.

Does the MAX4665ESE support break-before-make switching?

No, the MAX4665ESE does not guarantee break-before-make (BBM) timing. BBM is only specified for the MAX4666 variant (which integrates two NO and two NC switches with guaranteed BBM). The MAX4665ESE is a pure normally open (NO) quad SPST switch with standard switching timing (t_ON ≤ 400ns, t_OFF ≤ 275ns at +25°C).

Can the MAX4665ESE operate with a 3.3V logic supply?

Yes - the VL pin accepts 3.3V (within its specified range of GND − 0.3V to V+ + 0.3V), and logic thresholds remain fixed at 0.8V (low) and 2.4V (high). A 3.3V VL supply ensures compatible noise margins with 3.3V microcontrollers and FPGAs while maintaining full analog performance regardless of V+ or V− values.

What is the thermal performance of the MAX4665ESE in its narrow SOIC package?

In the 16-pin narrow SOIC package, the MAX4665ESE has a thermal resistance θ_JA of 115°C/W. At maximum ambient temperature (+85°C) and 696mW maximum power dissipation (derated above +70°C), junction temperature remains within safe operating limits. Derating is linear at 8.70mW/°C above +70°C.

How does the MAX4665ESE compare to mechanical relays in reed-relay replacement applications?

The MAX4665ESE replaces reed relays by offering faster switching (sub-400ns vs. milliseconds), no moving parts (MTBF > 1 billion cycles), lower power consumption (<1µA logic supply current), smaller footprint (16-pin SOIC vs. through-hole relay), and immunity to vibration/magnetic fields - while delivering comparable isolation (>60dB off-isolation) and leakage performance (5nA vs. typical 1nA–10nA reed relays).