Analog Devices Inc./Maxim Integrated MAX4601CWE+

Overview

MAX4601CWE+ from Maxim Integrated is a quad, normally closed (NC), single-pole single-throw (SPST) CMOS analog switch with 2.5Ω maximum on-resistance, 0.5Ω maximum on-resistance match between channels, and rail-to-rail signal handling capability across ±4.5V to ±20V dual supplies or +4.5V to +36V single supply. It delivers 2.5nA max off-leakage at +85°C and supports TTL/CMOS-compatible control inputs - ideal for precision reed relay replacement in automated test equipment.

For engineers reviewing the MAX4601CWE+ datasheet, MAX4601CWE+ pinout, MAX4601CWE+ application, or MAX4601CWE+ equivalent, key selection criteria include verified NC-only switching topology, guaranteed R_ON flatness ≤0.5Ω over full signal range, dual/single-supply flexibility, ESD protection >2000V, and wide-temperature operation (0°C to +70°C) in 16-pin Wide SO package.

Technical Context

The MAX4601CWE+ implements four independent CMOS transmission-gate switches configured exclusively as normally closed (NC), meaning each COM–NC path conducts when logic input is low (≤0.8V). Its architecture ensures matched conduction paths with ∆R_ON ≤0.5Ω and flat on-resistance (≤0.5Ω variation) across the full analog signal range from V₋ to V₊.

It operates with separate analog supplies (V+, V−) and logic supply (VL), enabling true rail-to-rail analog signal routing without distortion. Input thresholds (VIN_H = 2.4V, VIN_L = 0.8V) guarantee interoperability with TTL/CMOS logic under ±15V or +12V supply conditions, while internal protection diodes clamp signals exceeding supply rails.

Key Specifications

Pinout & Package

MAX4601CWE+ is housed in a 16-pin Wide SO (SOIC-W) package with 1.27mm pitch, 10.3mm × 7.5mm body size, and exposed pad not present. Pin functions are electrically validated per Maxim's official pin description table and functional diagrams.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4601CWE+, MAX4601EWE+ offers identical functionality with extended temperature range, while ADG1411BRUZ trades supply versatility for lower R_ON and higher bandwidth - making MAX4601CWE+ optimal for cost-sensitive, wide-supply-range NC-switching in commercial-grade ATE and communications hardware.

Availability

MAX4601CWE+ is available at Aetrix Electronics and suitable for automated test equipment, PBX audio routing, and avionics signal conditioning requiring stable component supply, long-lifecycle availability, and traceable sourcing.

Supply support for MAX4601CWE+ 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, mixed-signal, and RF ICs for industrial, communications, computing, and consumer applications.

The MAX4601 series belongs to Maxim's precision analog switch product line, engineered specifically for reed relay replacement and low-distortion signal routing in test, measurement, and telecom infrastructure.

FAQ

What is the operating temperature range for MAX4601CWE+?

The MAX4601CWE+ is specified for operation from 0°C to +70°C. This commercial-grade temperature range is validated per Maxim's datasheet ordering information and applies to all electrical parameters unless otherwise noted. The MAX4601CWE+ variant uses the same silicon die as the extended-range MAX4601EWE+, but is screened and tested only across the 0°C to +70°C interval.

Does MAX4601CWE+ support single-supply operation?

Yes, MAX4601CWE+ supports single-supply operation from +4.5V to +36V. In this configuration, V− must be connected to GND, V+ supplies the positive rail, and VL may be tied to V+ or a separate 2.7V–5.5V logic supply. All analog signal routing remains rail-to-rail (0V to V+), and logic inputs retain TTL/CMOS compatibility at +12V or +5V levels.

How does the normally closed (NC) configuration of MAX4601CWE+ affect system behavior during power loss?

The MAX4601CWE+ defaults to conducting (NC) when all control inputs are low or unpowered - meaning COM–NC paths close automatically upon power-down or logic reset. This fail-safe behavior ensures continuity in critical signal paths, such as sensor monitoring or emergency bypass circuits, without requiring external pull-down resistors or auxiliary power.

What is the maximum analog signal frequency supported by MAX4601CWE+?

MAX4601CWE+ maintains usable on-resistance and isolation up to 100MHz in 50Ω systems (−2dB insertion loss). However, off-isolation degrades above 30MHz due to capacitive coupling, and layout becomes critical above 5MHz. For broadband RF applications beyond 100MHz, Maxim recommends the MAX440/MAX441 series, which are fully characterized to 160MHz.

Can MAX4601CWE+ be used with bipolar analog signals?

Yes, MAX4601CWE+ handles true bipolar analog signals when operated from dual supplies (e.g., ±15V). Its rail-to-rail architecture allows signals from V− to V+ - including negative voltages - to pass through the NC switches with minimal distortion, provided V− and V+ remain within absolute maximum ratings (±44V differential, −0.3V to +44V relative to GND).