Analog Devices Inc./Maxim Integrated MAX4666EPE

Overview

MAX4666EPE from Maxim Integrated is a quad SPST analog switch IC with two normally closed (NC) and two normally open (NO) channels, guaranteeing break-before-make switching. It delivers 5Ω max on-resistance, 0.5Ω max R_ON match between channels, and rail-to-rail analog signal handling up to ±20V dual supply or +36V single supply. It is used in PBX systems, test equipment, and audio-signal routing where low distortion and reliable mechanical relay replacement are required.

For engineers reviewing the MAX4666EPE datasheet, MAX4666EPE pinout, MAX4666EPE application, or MAX4666EPE equivalent, key selection criteria include guaranteed break-before-make timing (10–125 ns), ±100mA continuous channel current, <0.5nA off-leakage at +85°C, TTL/CMOS-compatible logic thresholds, and 16-pin plastic DIP packaging for through-hole prototyping and industrial control interfaces.

Technical Context

The MAX4666EPE implements a CMOS-based quad SPST architecture with dedicated NC/NO pairing per switch pair (switches 1&4 NC, 2&3 NO), enabling deterministic break-before-make operation without external timing control. Its internal charge-pump–assisted gate drive ensures flat on-resistance (<0.5Ω variation) across the full ±10V analog signal range under ±15V supplies.

Logic inputs accept TTL/CMOS levels (0.8V/2.4V thresholds) independent of analog supply rails, and the VL pin allows separate 5V logic supply-critical for mixed-voltage system interfacing. ESD protection exceeds 2kV (HBM), and all analog terminals tolerate signals beyond V+/V− via integrated clamping diodes.

Key Specifications

Pinout & Package

MAX4666EPE uses a 16-pin plastic DIP package (0.3-inch width), rated for -40°C to +85°C operation, with through-hole mounting and industry-standard footprint compatibility.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG466BRZ and TS5A3157DCKR, the MAX4666EPE uniquely combines guaranteed break-before-make timing, dual-supply flexibility, industrial temperature range, and mixed NC/NO topology-making it the sole option for relay-replacement designs requiring fail-safe channel isolation and wide analog signal compliance.

Availability

MAX4666EPE is available at Aetrix Electronics and suitable for PBX systems, automated test equipment, and avionics BIT modules requiring stable component supply, long-term lifecycle support, and through-hole assembly compatibility.

Supply support for MAX4666EPE 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 industrial, communications, and automotive markets.

The MAX466x family targets high-reliability analog signal routing applications-specifically engineered to replace electromechanical relays with solid-state performance, including guaranteed break-before-make, rail-to-rail operation, and extended temperature resilience.

FAQ

What is the maximum analog signal voltage range supported by the MAX4666EPE?

The MAX4666EPE supports rail-to-rail analog signals from V− to V+, enabling operation across ±20V dual supplies or 0V to +36V single supplies. Absolute maximum ratings allow V+ to V− differentials up to 44V, with internal clamping diodes protecting against transient overvoltage-making MAX4666EPE suitable for industrial sensor interfaces and telecom line-card applications where wide dynamic range is essential.

Does the MAX4666EPE require external components for break-before-make timing?

No, the MAX4666EPE guarantees break-before-make switching internally-no external RC networks or timing controllers are needed. This deterministic behavior is inherent to its two-NC/two-NO channel architecture and is validated across -40°C to +85°C. Engineers can rely on MAX4666EPE's 10–125 ns break-before-make delay for safe multiplexer sequencing in automatic test equipment without additional design overhead.

Can the MAX4666EPE operate with a 3.3V logic supply while using ±15V analog rails?

Yes-the MAX4666EPE features a dedicated VL pin that accepts 2.7V to 5.5V logic supplies independently of analog rails. When VL = 3.3V and V± = ±15V, logic inputs retain TTL/CMOS compatibility (0.8V/2.4V thresholds), and analog performance-including 5Ω R_ON and rail-to-rail signal handling-is fully preserved. This capability simplifies integration with modern 3.3V microcontrollers in legacy ±15V test systems using MAX4666EPE.

What is the off-isolation performance of the MAX4666EPE at 1MHz?

At 1MHz, the MAX4666EPE provides -62dB off-isolation (dual supply) and -60dB (single supply), measured with 50Ω source/load. This specification ensures effective channel separation in audio routing and communication systems. Off-isolation degrades above 30MHz due to capacitive coupling-so for RF applications >50MHz, alternative devices like the MAX440 series are recommended. MAX4666EPE's isolation remains sufficient for baseband voice, sensor multiplexing, and low-frequency instrumentation.

Is the MAX4666EPE pin-compatible with other MAX466x variants in the same package?

Yes-MAX4666EPE shares identical 16-pin DIP pinout with MAX4664EPE and MAX4665EPE, differing only in internal switch configuration (two NC + two NO vs. four NC or four NO). This allows drop-in replacement in existing layouts when changing functional requirements-e.g., upgrading from pure NO switching to mixed-mode routing-without PCB revision. All three variants maintain identical electrical specs, thermal ratings, and package dimensions.