Analog Devices Inc./Maxim Integrated MAX336EWI+

Overview

MAX336EWI+ from Maxim Integrated is a 16-channel single-ended CMOS analog multiplexer designed to route one of 16 bidirectional analog inputs to a common COM output under 4-bit binary address control. It features 400Ω max on-resistance, <20pA NO-off leakage at +25°C, and 3.5pC typical charge injection-enabling precision signal routing in data acquisition systems operating from ±4.5V to ±20V dual supplies or +4.5V to +30V single supply.

For engineers reviewing the MAX336EWI+ datasheet, MAX336EWI+ pinout, MAX336EWI+ application, or MAX336EWI+ equivalent, key selection criteria include guaranteed low leakage across temperature, rail-to-rail signal handling, TTL/CMOS-compatible enable/address inputs, ESD protection >2000V, and pin compatibility with DG506 for drop-in upgrades in test equipment and industrial instrumentation.

Technical Context

The MAX336EWI+ implements a monolithic BiCMOS decoder-mux architecture with integrated level-shifting circuitry that ensures TTL/CMOS logic compatibility across its full ±4.5V to ±18V supply range. Its switch array uses matched P- and N-channel MOSFETs to achieve symmetrical conduction and <10Ω on-resistance matching between channels at +25°C.

Control logic includes active-low enable (EN) and 4-bit address lines (A0–A3) that select one of 16 NOx inputs to connect to COM. The device supports break-before-make switching with ≤50ns interval and exhibits <500ns transition time under ±15V supplies-critical for minimizing crosstalk and signal corruption during channel switching in high-fidelity measurement paths.

Key Specifications

Pinout & Package

MAX336EWI+ is housed in a 28-pin Wide SO (SOIC-W) package with 300-mil body width and gull-wing leads. Pin pitch is 1.27mm; package conforms to JEDEC MS-013AC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX336CWI+, the MAX336EWI+ extends operational reliability to –40°C to +85°C without sacrificing leakage, RON, or ESD performance; versus ADG506AKRZ, it eliminates external logic supply dependency and delivers superior leakage and charge injection for high-precision DC-coupled measurement chains.

Availability

MAX336EWI+ is available at Aetrix Electronics and suitable for precision data acquisition, automated test equipment, and industrial process control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX336EWI+ 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 and mixed-signal ICs for industrial, medical, and communications applications.

The MAX336EWI+ belongs to Maxim's precision analog multiplexer product line, engineered specifically for low-leakage, low-charge-injection signal routing in metrology-grade instrumentation and ruggedized field equipment.

FAQ

What is the maximum analog signal voltage range supported by the MAX336EWI+?

The MAX336EWI+ supports analog signals from V– to V+ - up to ±15V with dual ±15V supplies or 0V to +12V with +12V single supply (V– tied to GND). Absolute maximum ratings limit V+ to 44V above V–, but usable signal swing is constrained by supply rails and internal clamp diodes. For example, with ±15V supplies, the guaranteed linear range is ±15V; with +12V/V– = GND, it is 0V to +12V.

Is the MAX336EWI+ pin-compatible with the DG506 analog multiplexer?

Yes, the MAX336EWI+ is explicitly designed as a pin-compatible upgrade for the DG506. Pin assignments, package outline (28-pin Wide SO), and functional behavior-including address decoding, enable logic, and analog terminal layout-are identical. No PCB layout changes are required when replacing DG506 with MAX336EWI+, though users should verify supply sequencing and thermal dissipation in high-channel-count deployments.

Does the MAX336EWI+ require external level-shifting for TTL-compatible control inputs?

No, the MAX336EWI+ integrates internal level-shifting circuitry that guarantees TTL/CMOS logic compatibility (0.8V low / 2.4V high thresholds) across its full specified supply range of ±4.5V to ±18V. This eliminates the need for external level translators when interfacing with standard microcontrollers, FPGAs, or logic families-even when operating from nonstandard supply voltages like ±12V or +24V/V– = GND.

What is the guaranteed on-resistance matching between channels in the MAX336EWI+?

The MAX336EWI+ guarantees ≤10Ω on-resistance matching (∆RON = RON_MAX – RON_MIN) between any two channels at +25°C and ≤15Ω over the full –40°C to +85°C operating range. This tight matching ensures consistent gain and minimal channel-to-channel gain error in applications such as multi-sensor ratiometric measurements and calibrated reference switching.

Can the MAX336EWI+ operate from an unbalanced supply, such as +24V and –5V?

Yes, the MAX336EWI+ supports unbalanced supplies - for example, +24V on V+ and –5V on V– - as long as the total voltage difference (V+ – V–) does not exceed 44V and each supply remains within its absolute maximum rating (V+ ≤ 44V above V–; V– ≥ –0.3V above ground reference). Unbalanced operation maintains full functionality including rail-to-rail signal handling and TTL-compatible logic inputs.