Analog Devices Inc./Maxim Integrated MAX339EEE+T

Overview

The MAX339EEE+T from Maxim Integrated is a dual 4-channel CMOS analog multiplexer designed to route one of four analog inputs per section to a common bidirectional output under 2-bit binary address control. It features ≤400Ω on-resistance, <20pA NO-off leakage at +25°C, and 1.5pC typical charge injection-enabling precision signal routing in data-acquisition systems and test equipment operating from ±4.5V to ±20V supplies.

For engineers reviewing the MAX339EEE+T datasheet, MAX339EEE+T pinout, MAX339EEE+T application, or MAX339EEE+T equivalent, key selection criteria include guaranteed low leakage across -40°C to +85°C, rail-to-rail analog signal handling up to ±15V, TTL/CMOS-compatible enable and address inputs, and ESD protection >2000V per Method 3015.7.

Technical Context

The MAX339EEE+T implements two independent 4:1 analog multiplexers in a single 16-pin QSOP package, each with separate COM outputs (COMA and COMB) and shared address lines (A0, A1) plus a common enable (EN). Its silicon-gate CMOS process ensures symmetrical bidirectional conduction and break-before-make switching with ≤140ns interval.

All digital inputs tolerate full supply range (±4.5V to ±18V) while maintaining TTL logic thresholds (0.8V–2.4V), and analog terminals support voltage ranges from (V− − 2V) to (V+ + 2V) with internal clamping diodes. The device operates with single-supply (+4.5V to +30V) or bipolar-supply (±4.5V to ±20V) configurations without external level-shifting.

Key Specifications

Pinout & Package

MAX339EEE+T is housed in a 16-pin QSOP (Quarter-size Outline Package) with 0.65mm lead pitch and RoHS-compliant matte-tin plating. The package includes an exposed pad (EP) connected internally to V+ for thermal enhancement and must be soldered to a V+-referenced copper pour.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG509A and MAX329EEE+, the MAX339EEE+T delivers balanced performance: lower leakage than DG509A with superior ESD protection, and lower on-resistance than MAX329EEE+ while retaining competitive charge injection-making it optimal for general-purpose industrial data acquisition.

Availability

MAX339EEE+T is available at Aetrix Electronics and suitable for data-acquisition systems, test equipment, and guidance and control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX339EEE+T 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 is a semiconductor company specializing in analog and mixed-signal ICs for industrial, communications, and computing applications, now part of Analog Devices.

The MAX338/MAX339 family was engineered for low-leakage, low-charge-injection analog signal routing in precision measurement and ruggedized systems-targeting applications where signal integrity and reliability outweigh raw speed requirements.

FAQ

What is the maximum analog signal voltage range supported by the MAX339EEE+T?

The MAX339EEE+T supports analog signals from V− to V+ with rail-to-rail capability. When operated on ±15V supplies, it handles ±15V signals directly; with +12V/0V single supply, the range is 0V to +12V. Input voltages beyond V+ or below V− are clamped by internal diodes, limiting forward current to 30mA continuous.

Does the MAX339EEE+T require power-supply sequencing, and what happens if sequencing is violated?

Yes, proper sequencing is recommended: V+ should be applied first, then V−, followed by logic inputs. Violating this may cause latch-up or transient overstress. If sequencing cannot be guaranteed, external blocking diodes (as shown in Figure 1 of the datasheet) can be added-reducing analog range by 1V but preserving all electrical specifications of the MAX339EEE+T.

Can the MAX339EEE+T be used as a demultiplexer, and how is that configured?

Yes, the MAX339EEE+T functions bidirectionally and can operate as a demultiplexer. Apply the analog signal to either COMA or COMB, use A0/A1 to select the destination NOx terminal, and assert EN high. Signal directionality is determined solely by voltage potential-not by internal design-so the same MAX339EEE+T pinout supports mux or demux roles without hardware change.

What is the thermal performance of the MAX339EEE+T in its QSOP package, and how should the exposed pad be handled?

The MAX339EEE+T in 16-pin QSOP has a thermal resistance θ_JA of 120°C/W (derating 8.3mW/°C above +70°C). Its exposed pad (EP) is internally connected to V+ and must be soldered to a V+-referenced copper area for effective heat dissipation. Leaving EP floating or grounding it degrades thermal performance and may violate absolute maximum ratings.

How does the MAX339EEE+T compare to the MAX338 in terms of pin compatibility and functional substitution?

The MAX339EEE+T and MAX338 share identical 16-pin QSOP footprints and supply pinouts (V+, V−, GND, EN, A0, A1, A2), but differ functionally: MAX338 is an 8:1 mux with single COM, while MAX339 is dual 4:1 with COMA/COMB. They are not pin-compatible replacements-substituting MAX339EEE+T for MAX338 requires PCB layout changes to accommodate separate COM outputs and removal of A2.