Analog Devices Inc./Maxim Integrated MAX336EUI+

Overview

MAX336EUI+ from Maxim Integrated is a 16-channel, single-ended CMOS analog multiplexer designed to route one of 16 bidirectional analog inputs (NO1–NO16) to a common output (COM) under 4-bit binary address control (A0–A3). It features 400Ω max on-resistance, <20pA NO-off leakage at +25°C, 3.5pC typical charge injection, and operates from ±4.5V to ±20V dual supplies or +4.5V to +30V single supply. It serves precision data acquisition systems requiring rail-to-rail signal handling and low leakage.

For engineers reviewing the MAX336EUI+ datasheet, MAX336EUI+ pinout, MAX336EUI+ application, or MAX336EUI+ equivalent, key selection criteria include guaranteed low charge injection for sampling accuracy, ESD protection >2000V (Method 3015.7), TTL/CMOS-compatible control inputs across full temperature range, and pin compatibility with industry-standard DG506.

Technical Context

The MAX336EUI+ implements a monolithic BiCMOS decoder-driven analog switch matrix with break-before-make switching and bidirectional rail-to-rail signal capability. Its control logic accepts TTL/CMOS-level address (A0–A3) and enable (EN) signals referenced to GND, independent of analog supply rails.

It supports both single-supply (V− tied to GND) and dual-supply operation, with analog signal range extending from V− to V+ (±15V typical). Internal clamping diodes protect terminals against overvoltage, and all leakage parameters are 100% tested at maximum rated hot temperature.

Key Specifications

Pinout & Package

MAX336EUI+ is housed in a 28-pin TSSOP package (lead-free/RoHS-compliant), with 0.65mm pitch and exposed pad for thermal enhancement. Pin 1 is marked by a dot; pin numbering follows standard TSSOP convention.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1606BRUZ, MAX336EUI+ trades lower on-resistance for true dual-supply flexibility and higher ESD robustness; compared with DG506AY, it delivers 2.25× lower RON, 7× less charge injection, and integrated TTL compatibility - making it the preferred upgrade for new designs demanding precision and reliability.

Availability

MAX336EUI+ is available at Aetrix Electronics and suitable for precision data acquisition, automated test equipment, industrial sensor signal conditioning, and calibration system design requiring stable component supply across extended temperature ranges (−40°C to +85°C).

Supply support for MAX336EUI+ 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 MAX336 series belongs to Maxim's precision analog switch product line, engineered specifically for low-leakage, low-charge-injection signal routing in metrology-grade instrumentation and high-reliability test systems.

FAQ

What is the operating temperature range for the MAX336EUI+?

The MAX336EUI+ is rated for −40°C to +85°C ambient operation, validated across all electrical specifications including on-resistance, leakage currents, and switching times. This extended industrial temperature range makes it suitable for deployment in harsh environments such as factory automation controllers and outdoor test instrumentation where thermal cycling is expected. The device maintains guaranteed performance without derating within this full range.

Does the MAX336EUI+ support single-supply operation?

Yes, the MAX336EUI+ supports single-supply operation with V− connected to GND and V+ ranging from +4.5V to +30V. In this configuration, the analog signal range extends from 0V to V+, enabling compatibility with microcontroller-based systems using 5V or 12V rails. All control inputs remain TTL/CMOS-compatible, and leakage and on-resistance specs are preserved per datasheet Electrical Characteristics tables.

Is the MAX336EUI+ pin-compatible with the DG506?

Yes, the MAX336EUI+ is explicitly designed as a pin-compatible upgrade for the DG506, sharing identical pinout, footprint, and basic functional behavior. No PCB layout changes are required for replacement. However, MAX336EUI+ improves upon DG506 with 400Ω vs. 900Ω max on-resistance, 3.5pC vs. 25pC charge injection, and built-in >2000V ESD protection - delivering measurable performance gains without redesign effort.

What is the maximum allowable voltage difference between V+ and V− for the MAX336EUI+?

The absolute maximum voltage difference between V+ and V− for the MAX336EUI+ is 44V, as specified in the Absolute Maximum Ratings table. Exceeding this limit risks permanent damage due to internal junction breakdown. For reliable operation, maintain V+ − V− ≤ 44V while staying within individual rail limits: V+ ≤ 44V above V−, and V− ≥ −0.3V relative to GND. Unbalanced supplies (e.g., +24V/−5V) are permitted if this differential constraint is met.

How does charge injection affect system accuracy when using the MAX336EUI+ in sample-and-hold circuits?

Charge injection from the MAX336EUI+ - specified at 3.5pC typical - induces a voltage step on the hold capacitor (ΔV = Q/C), directly contributing to sampling error. With a 10nF capacitor, this yields ~0.35mV offset; with a 100pF capacitor, it rises to 35mV. To minimize impact, use larger hold capacitance, add guard traces, or implement correlated double sampling. The guaranteed low value ensures predictable error correction in precision data converters interfaced via MAX336EUI+.