Analog Devices Inc./Maxim Integrated MAX4668CSE+

Overview

MAX4668CSE+ from Maxim Integrated is a dual, normally open (NO), single-pole single-throw (SPST) CMOS analog switch with 2.5Ω maximum on-resistance, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and rail-to-rail signal handling. It delivers matched on-resistance (≤0.4Ω), flat on-resistance (≤0.5Ω) over ±10V signal range, and 5nA max off-leakage at +85°C-ideal for precision test equipment and audio-signal routing where mechanical relay replacement is required.

For engineers reviewing the MAX4668CSE+ datasheet, MAX4668CSE+ pinout, MAX4668CSE+ application, or MAX4668CSE+ equivalent, this page provides verified circuit role, supply compatibility, leakage performance, switching dynamics, and real-world use context without generic assumptions or inferred functionality.

Technical Context

The MAX4668CSE+ implements two independent NO SPST switches using high-voltage CMOS process, supporting true rail-to-rail analog signals from V− to V+. Its control logic accepts TTL/CMOS-compatible inputs (0.8V/2.4V thresholds) across full supply ranges, enabling direct interface with +5V logic even under ±15V analog supplies.

Each switch features guaranteed break-before-make isolation only in the MAX4669 variant-not applicable here-while MAX4668CSE+ ensures strict NO behavior with no internal inter-channel timing coupling. On-resistance matching (∆RON ≤ 0.4Ω) and flatness (RFLAT(ON) ≤ 0.5Ω) are production-tested across temperature and signal voltage, ensuring consistent channel tracking in multiplexer or signal-gating applications.

Key Specifications

Pinout & Package

MAX4668CSE+ uses a 16-pin narrow SOIC (SO/DIP) package with exposed pad not present; body dimensions 10.3mm × 5.3mm × 1.75mm, pitch 1.27mm. Pin 1 marked by notch or dot; device operates with V+ (pin 13), V− (pin 4), VL (pin 12), GND (pin 5), and dual independent NO/COM pairs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1419BRUZ and TS5A23157DCUR, MAX4668CSE+ uniquely combines wide supply range (+4.5V to +36V / ±4.5V to ±20V), rail-to-rail analog capability, and sub-3Ω on-resistance-making it the only option among the three qualified for avionics, industrial ATE, and mixed-signal test systems requiring both high voltage and precision switching.

Availability

MAX4668CSE+ is available at Aetrix Electronics and suitable for automated test equipment, avionics sensor interfaces, professional audio routing, and industrial process control systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX4668CSE+ 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 industrial, communications, computing, and automotive markets, with emphasis on reliability and integration.

The MAX4667/MAX4668/MAX4669 family targets high-voltage analog switching applications demanding low distortion, precise channel matching, and robust supply flexibility-specifically engineered for reed-relay replacement and precision instrumentation.

FAQ

What is the maximum allowable supply voltage for MAX4668CSE+?

The MAX4668CSE+ supports absolute maximum ratings of V+ to GND = −0.3V to +44V and V− to GND = +0.3V to −44V, with recommended operating range of +4.5V to +36V (single supply) or ±4.5V to ±20V (dual supply). Exceeding ±20V on V+/V− risks permanent damage per Absolute Maximum Ratings table.

Does MAX4668CSE+ support rail-to-rail analog signal switching?

Yes, MAX4668CSE+ supports rail-to-rail analog signals from V− to V+, confirmed in General Description and Electrical Characteristics sections. This allows full utilization of the analog supply range-for example, ±10V signals with ±15V supplies or 0V–12V signals with +12V single supply-without clipping or distortion.

Is MAX4668CSE+ pin-compatible with MAX4667CSE+ or MAX4669CSE+?

Yes, MAX4668CSE+ shares identical 16-pin narrow SOIC pinout and package with MAX4667CSE+ and MAX4669CSE+, as shown in the Pin Configurations diagram. However, logic behavior differs: MAX4668CSE+ has two NO switches, MAX4667CSE+ has two NC switches, and MAX4669CSE+ has one NO + one NC with break-before-make timing.

What is the guaranteed on-resistance match between channels for MAX4668CSE+?

MAX4668CSE+ guarantees ∆RON ≤ 0.4Ω maximum between its two switches, defined as RON(MAX) − RON(MIN), tested across temperature and signal conditions per Note 4 in the datasheet. This ensures predictable channel tracking in differential or parallel signal paths.

Can MAX4668CSE+ operate from a single +5V supply?

No-MAX4668CSE+ requires minimum +4.5V single supply, but +5V alone is insufficient because V− must be connected to GND and VL requires +2.7V to +5.5V. With +5V applied to V+, V− tied to GND, and VL = +5V, the device operates, but analog signal range is limited to 0V–+5V (not rail-to-rail), and R_ON rises to 4Ω max per Single Supply Electrical Characteristics table.