Analog Devices Inc./Maxim Integrated MAX4665CSE

Overview

MAX4665CSE 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 max on-resistance, 0.5Ω max on-resistance match between channels, and 5nA max off-leakage current at +85°C, enabling low-distortion audio-signal routing and reed-relay replacement in test equipment.

For engineers reviewing the MAX4665CSE datasheet, MAX4665CSE pinout, MAX4665CSE application, or MAX4665CSE equivalent, key selection criteria include guaranteed R_ON flatness (0.5Ω max), TTL/CMOS-compatible logic thresholds (+0.8V/+2.4V), ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and SOIC-16 package compatibility with industrial temperature range validation.

Technical Context

The MAX4665CSE implements CMOS-based SPST switching architecture with four independent NO switches, each featuring matched and flat on-resistance across its full ±10V analog signal range. Its control logic accepts TTL/CMOS inputs referenced to VL, supporting interoperability with +12V single-supply or ±15V dual-supply systems without level-shifting.

Internal protection diodes clamp signals exceeding V+ or V−, while charge injection is limited to 300pC typical-critical for sample-and-hold and multiplexer applications requiring minimal signal corruption. Break-before-make timing is not guaranteed (exclusive to MAX4666), confirming strict NO-only switching behavior.

Key Specifications

Pinout & Package

MAX4665CSE is housed in a 16-pin narrow SOIC (SO/DIP) package, 3.9mm width, with standard 1.27mm pitch and gull-wing leads. Pin 1 is marked by a beveled corner or dot; device orientation follows JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG444BRZ and TS5A3157DCKR, the MAX4665CSE uniquely combines guaranteed 0.5Ω R_ON match, rail-to-rail ±20V dual-supply support, and 5nA leakage at +85°C-making it optimal for high-precision, wide-supply industrial multiplexing where channel consistency and thermal stability are non-negotiable.

Availability

MAX4665CSE is available at Aetrix Electronics and suitable for automatic test equipment, PBX/PABX systems, and audio-signal routing applications requiring stable component supply across industrial temperature grades and long-term production continuity.

Supply support for MAX4665CSE 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 fabless 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 specifically for high-fidelity analog signal routing in environments demanding low distortion, tight channel matching, and robust operation across wide supply ranges-targeting ATE, telecom infrastructure, and avionics.

FAQ

What is the maximum analog signal voltage range supported by the MAX4665CSE?

The MAX4665CSE supports rail-to-rail analog signals from V− to V+. With ±15V dual supplies, this enables ±15V signal handling; with +12V single supply (V− = GND), it supports 0V to +12V. Absolute maximum ratings allow V+ to V− differential up to 44V, but signal swing must remain within supply rails to avoid clamping.

Does the MAX4665CSE require a separate logic supply (VL), and what voltage is acceptable?

Yes, the MAX4665CSE requires a dedicated VL supply pin (Pin 12) for defining logic thresholds. VL must be +5V ±10%, decoupled with a 0.1μF capacitor to GND. This ensures correct +0.8V low and +2.4V high input thresholds regardless of analog supply configuration (single or dual).

Can the MAX4665CSE be used in a single-supply configuration, and how is V− handled?

Yes, the MAX4665CSE operates in single-supply mode: tie Pin 4 (V−) to GND, apply V+ (Pin 13) between +4.5V and +36V, and maintain VL = +5V. Signal range becomes 0V to V+, preserving rail-to-rail functionality. Internal protection diodes remain active but do not interfere with normal operation.

What is the guaranteed on-resistance match between channels for the MAX4665CSE, and why does it matter?

The MAX4665CSE guarantees ≤0.5Ω maximum difference in on-resistance (ΔR_ON) between any two channels. This specification ensures uniform gain and minimal crosstalk-induced error in multi-channel instrumentation multiplexers, where mismatch directly impacts measurement accuracy and calibration stability.

Is the MAX4665CSE pin-compatible with the MAX4664CSE or MAX4666CSE?

No-while all three share the same SOIC-16 package and pinout numbering, their internal switch configurations differ: MAX4664CSE has four NC switches, MAX4665CSE has four NO switches, and MAX4666CSE has two NC + two NO with break-before-make. Swapping them without circuit review risks incorrect signal routing or short circuits.