Analog Devices Inc./Maxim Integrated MAX339ETE+T

Overview

MAX339ETE+T from Maxim Integrated is a dual 4-channel CMOS analog multiplexer designed to route one of four analog inputs per section (NO1A–NO4A and NO1B–NO4B) to respective bidirectional common outputs (COMA, COMB) under 2-bit binary address control (A0, A1). It features 400Ω max on-resistance, <20pA NO-off leakage at +25°C, 1.5pC typical charge injection, and operates from ±4.5V to ±20V or +4.5V to +30V supplies. It serves in precision data-acquisition systems where low leakage and rail-to-rail signal handling are critical.

For engineers reviewing the MAX339ETE+T datasheet, MAX339ETE+T pinout, MAX339ETE+T application, or MAX339ETE+T equivalent, key selection criteria include guaranteed low charge injection for sample-and-hold accuracy, ESD protection >2000V (Method 3015.7), TTL/CMOS-compatible enable and address inputs, and verified pin compatibility with industry-standard DG509A in TQFN-EP package.

Technical Context

The MAX339ETE+T implements dual independent 4:1 analog multiplexing using silicon-gate CMOS process technology, supporting both single-supply (+4.5V to +30V, V− tied to GND) and bipolar-supply (±4.5V to ±20V) operation. Its internal decode logic accepts A0/A1 address bits and EN enable signal-TTL/CMOS-compatible across full temperature range-with break-before-make switching and 10ns–140ns transition isolation.

Each channel delivers rail-to-rail analog signal handling (±15V dual supply, 0–12V single supply), matched on-resistance (<10Ω between channels), and ultra-low leakage paths (<0.05nA COM-off at +25°C). Charge injection is tightly controlled (1.5pC typ) to minimize sampling error in high-impedance nodes, and ESD robustness exceeds 2000V HBM without external protection.

Key Specifications

Pinout & Package

The MAX339ETE+T is housed in a 16-pin TQFN-EP package (5mm × 5mm) with exposed pad connected to V+. This RoHS-compliant, lead-free package provides low thermal resistance and compact footprint for space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG509A and MAX329ESE+, the MAX339ETE+T delivers optimal trade-off for general-purpose precision multiplexing: it improves leakage and ESD robustness versus DG509A while maintaining lower on-resistance and faster switching than MAX329ESE+, making it suitable for mixed-signal systems requiring speed, accuracy, and ruggedness.

Availability

MAX339ETE+T is available at Aetrix Electronics and suitable for data-acquisition systems, test equipment, and guidance and control systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX339ETE+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 (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, communications, and computing markets.

The MAX338/MAX339 product line was engineered for low-leakage, low-charge-injection analog signal routing in precision instrumentation and military-grade systems-prioritizing signal integrity over raw speed or integration density.

FAQ

What is the maximum allowable supply voltage for MAX339ETE+T in dual-supply operation?

The MAX339ETE+T supports dual-supply operation from ±4.5V to ±20V. The absolute maximum rating specifies that the difference between V+ and V− must not exceed 44V. Therefore, applying ±20V (40V total) is within specification, but ±22V would violate the 44V differential limit and risk permanent damage to the MAX339ETE+T.

Does MAX339ETE+T support single-supply operation, and how is V− configured?

Yes, the MAX339ETE+T supports single-supply operation from +4.5V to +30V. In this mode, the V− pin must be connected directly to GND. This configuration enables rail-to-rail analog signal handling from 0V to V+, making the MAX339ETE+T suitable for battery-powered or 3.3V/5V/12V systems without negative rails.

What is the purpose of the exposed pad on the MAX339ETE+T TQFN package?

The exposed pad (EP) on the MAX339ETE+T serves dual thermal and electrical functions: it must be soldered to the V+ plane on the PCB to enhance heat dissipation and reduce junction temperature, and it also improves EMI immunity by providing a low-inductance return path. Per Maxim's datasheet, EP is internally connected to V+, not GND or floating.

How does the enable (EN) pin affect switching behavior in MAX339ETE+T?

The EN pin is an active-high digital control that globally enables or disables both 4:1 multiplexer sections. When EN = low, all analog switches open regardless of address inputs, reducing off-leakage and eliminating crosstalk. When EN = high, switching follows A0/A1 state with typical turn-on/turn-off times of 280ns/110ns (at +25°C), ensuring deterministic timing control in the MAX339ETE+T.

Is MAX339ETE+T pin-compatible with DG509A, and what benefits does it offer as an upgrade?

Yes, the MAX339ETE+T is a pin-compatible upgrade for the DG509A in the same 16-pin TQFN-EP package. It improves on-resistance (400Ω vs. 600Ω max), reduces charge injection (1.5pC vs. ~10pC), lowers leakage (<20pA vs. ~100pA), and adds >2000V HBM ESD protection-making the MAX339ETE+T a drop-in enhancement for legacy DG509A designs without layout changes.