Analog Devices Inc./Maxim Integrated MAX4601CPE+

Overview

MAX4601CPE+ from Maxim Integrated is a quad SPST normally closed (NC) analog switch IC designed for precision signal routing in rail-to-rail analog paths. It delivers 2.5Ω max on-resistance, 0.5Ω max R_ON match between channels, and 2.5nA max off-leakage at +85°C, operating from single +4.5V to +36V or dual ±4.5V to ±20V supplies. It is used in automatic test equipment for reed relay replacement where low distortion and high reliability are critical.

For engineers reviewing the MAX4601CPE+ datasheet, MAX4601CPE+ pinout, MAX4601CPE+ application, or MAX4601CPE+ equivalent, key selection criteria include guaranteed R_ON flatness (0.5Ω max), TTL/CMOS-compatible logic thresholds (+0.8V/+2.4V), ESD protection >2000V, and 16-pin PDIP package compatibility with legacy through-hole layouts.

Technical Context

The MAX4601CPE+ implements four independent CMOS-based SPST switches with normally closed topology-each COM terminal connects to its NC terminal when the corresponding IN control input is logic low. Its architecture ensures matched conduction characteristics across all four channels under varying signal voltages and temperatures.

It supports both single- and dual-supply operation with separate V+, V−, and VL pins, enabling flexible biasing for mixed-signal systems. Logic inputs tolerate standard TTL/CMOS thresholds regardless of supply configuration, and internal protection diodes clamp analog signals exceeding V+ or V−, limiting forward current per Absolute Maximum Ratings.

Key Specifications

Pinout & Package

MAX4601CPE+ uses a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch; lead finish is matte tin.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4601CPE+, MAX4601CWE+ offers identical functionality in surface-mount form for modern production, while ADG441BNZ provides basic NC switching at lower performance-neither is pin-compatible, and MAX4601CPE+ remains optimal for legacy through-hole designs requiring rail-to-rail fidelity and dual-supply flexibility.

Availability

MAX4601CPE+ is available at Aetrix Electronics and suitable for reed relay replacement, automated test equipment, and avionics signal conditioning requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX4601CPE+ 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 MAX4601 series belongs to Maxim's precision analog switch product line, engineered specifically for low-R_ON, low-leakage, and rail-to-rail operation in mission-critical signal routing applications where mechanical relay limitations must be overcome.

FAQ

What is the operating temperature range for MAX4601CPE+?

The MAX4601CPE+ is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range is validated across all electrical specifications including on-resistance, leakage, and switching speed. The 'C' suffix in MAX4601CPE+ explicitly denotes this 0°C to +70°C grade, distinguishing it from the extended −40°C to +85°C 'E' grade variants like MAX4601EPE+.

Does MAX4601CPE+ support dual-supply operation?

Yes, MAX4601CPE+ supports dual-supply operation from ±4.5V to ±20V. Its V+ and V− pins accept symmetrical or asymmetrical analog rails, and the VL pin allows independent logic supply biasing. This configuration enables true bipolar signal switching-for example, ±10V audio or sensor signals-with guaranteed R_ON flatness and low leakage across the full range.

How does the normally closed (NC) topology of MAX4601CPE+ affect system behavior during power loss?

During power loss or logic reset, MAX4601CPE+ defaults to its NC state: all COM–NC paths remain closed as long as V+ and V− are present above absolute minimums. If both analog supplies collapse, the internal CMOS structure opens all paths. This fail-safe behavior ensures predictable continuity in safety-critical routing-unlike NO variants which default open-and is intrinsic to the MAX4601CPE+ silicon design.

Can MAX4601CPE+ be used with a 3.3V logic controller?

Yes, MAX4601CPE+ accepts 3.3V logic inputs when VL is supplied with 3.3V. Its logic thresholds are referenced to VL, not V+, so VIN_H = 0.7 × VL and VIN_L = 0.3 × VL. With VL = 3.3V, thresholds become ~2.3V and ~1.0V-fully compatible with standard 3.3V CMOS outputs. No level-shifter is required.

What is the maximum continuous current rating per switch in MAX4601CPE+?

MAX4601CPE+ supports ±200mA continuous current per COM/NC path, as specified in Absolute Maximum Ratings. This rating applies across the full operating temperature range and supply conditions. Exceeding ±200mA risks thermal overstress or parametric shift; for pulsed operation, ±300mA is allowed at 1ms pulse width and 10% duty cycle.