Analog Devices Inc./Maxim Integrated MAX4605EPE

Overview

The MAX4605EPE from Maxim Integrated is a quad, single-pole single-throw (SPST), normally open (NO) CMOS analog switch with 5Ω maximum on-resistance, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and rail-to-rail analog signal handling up to ±10V. It delivers 0.5Ω maximum on-resistance matching between channels and 2.5nA maximum off-leakage current at +85°C, making it suitable for precision reed-relay replacement in automated test equipment.

For engineers reviewing the MAX4605EPE datasheet, MAX4605EPE pinout, MAX4605EPE application, or MAX4605EPE equivalent, key selection criteria include guaranteed R_ON flatness (0.5Ω max over signal range), TTL/CMOS-compatible logic thresholds (+0.8V / +2.4V), ESD protection (>2000V), and 16-pin plastic DIP packaging for through-hole prototyping and industrial control interfaces.

Technical Context

This device implements four independent SPST NO switches using high-voltage CMOS process technology, enabling true rail-to-rail analog conduction across ±15V supplies without signal clipping. Each channel features matched R_ON (≤0.5Ω difference) and flat R_ON (≤0.5Ω variation) over the full ±10V input range, critical for low-distortion audio routing and precision instrumentation multiplexing.

Logic inputs are referenced to VL (independent logic supply) and maintain TTL/CMOS compatibility across all operating voltages, while internal protection diodes clamp signals exceeding V+ or V−. The architecture supports both single- and dual-supply configurations without external level-shifting circuitry.

Key Specifications

Pinout & Package

MAX4605EPE is housed in a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width and standard through-hole footprint. Pin 1 is located at the left end of the top row when viewing the top side with notch or dot oriented left.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4605EPE, ADG441BRZ offers higher voltage tolerance but no through-hole option, while TS5A3157DCKR is a low-voltage single-channel device requiring four separate ICs and new layout - neither matches the MAX4605EPE's combination of quad NO topology, 16-pin DIP, wide supply range, and guaranteed R_ON specs in one package.

Availability

MAX4605EPE is available at Aetrix Electronics and suitable for automated test equipment, telecom infrastructure, and avionics signal conditioning requiring stable component supply, long-term obsolescence management, and through-hole assembly compatibility.

Supply support for MAX4605EPE 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 MAX4604/MAX4605/MAX4606 family was designed specifically for high-reliability, low-distortion analog switching in environments where mechanical relays fail - targeting test instrumentation, telecom switching, and ruggedized embedded systems.

FAQ

What is the maximum analog signal voltage the MAX4605EPE can switch?

The MAX4605EPE supports rail-to-rail analog signals up to ±10V when operated within its specified supply ranges (±4.5V to ±20V dual or +4.5V to +36V single). Signals beyond V+ or below V− are clamped by internal diodes, so the absolute maximum analog voltage is limited by the supply rails - for example, with ±15V supplies, the safe analog range is −15V to +15V, but guaranteed performance (e.g., R_ON flatness) is specified over ±10V.

Does the MAX4605EPE require a separate logic supply voltage?

Yes, the MAX4605EPE uses pin 12 (VL) as an independent logic supply input, accepting 2.7V to 5.5V. This allows clean separation between analog and digital domains, preventing noise coupling. When using 5V microcontrollers, connect VL to +5V; for 3.3V logic, tie VL to +3.3V - the logic thresholds (+0.8V low, +2.4V high) remain valid across this range, ensuring reliable switching control for the MAX4605EPE.

Can the MAX4605EPE operate from a single +12V supply?

Yes, the MAX4605EPE fully supports single-supply operation from +4.5V to +36V. For +12V use, connect V+ (pin 13) to +12V, V− (pin 4) to GND (pin 5), and VL (pin 12) to +5V or +3.3V. All electrical specifications - including 5Ω max R_ON, 0.5Ω R_ON match, and 2.5nA off-leakage - are guaranteed across the full temperature range (−40°C to +85°C) under single-supply conditions, as confirmed in the datasheet's "Single Supply" electrical characteristics table.

What is the thermal performance of the MAX4605EPE in plastic DIP package?

The MAX4605EPE in 16-pin plastic DIP has a thermal resistance θ_JA of 10.53°C/W and a maximum continuous power dissipation of 842mW at +70°C ambient (derated above that temperature). At full 100mA per channel and 5Ω R_ON, worst-case power per switch is 50mW - well within safe limits. The package is rated for −40°C to +85°C operation, and the device's guaranteed parameters (e.g., leakage, R_ON) are validated across this full industrial temperature range for the MAX4605EPE grade.

How does the MAX4605EPE compare to the MAX4604EPE and MAX4606EPE?

The MAX4605EPE is functionally identical to MAX4604EPE and MAX4606EPE in package, pinout, supply range, and core analog specs - but differs in switch configuration: MAX4605EPE has four normally open (NO) switches, MAX4604EPE has four normally closed (NC), and MAX4606EPE has two NC + two NO. All share the same 5Ω R_ON, 0.5Ω matching, and −40°C to +85°C rating. Selection depends solely on required default state (open/closed) in the target application - the MAX4605EPE is optimal where signal paths must remain open until actively enabled.