Analog Devices Inc./Maxim Integrated DG408EUE+

Overview

DG408EUE+ from Maxim Integrated is a precision 1-of-8 CMOS analog multiplexer/demultiplexer designed for bidirectional signal routing in data-acquisition and test systems. It delivers guaranteed 100Ω max on-resistance, 8Ω max channel-to-channel matching, 15pC max charge injection, and rail-to-rail analog signal handling from ±5V to ±20V dual supplies or +5V to +30V single supply - enabling high-fidelity switching in sample-and-hold circuits and audio routing.

For engineers reviewing the DG408EUE+ datasheet, DG408EUE+ pinout, DG408EUE+ application, or DG408EUE+ equivalent, key selection criteria include on-resistance flatness (9Ω max), input leakage (<5nA at +85°C), enable-controlled break-before-make timing, TTL/CMOS-compatible digital inputs, and TSSOP-16 packaging for space-constrained PCB layouts.

Technical Context

The DG408EUE+ implements a fully decoded 3-bit address logic (A0–A2) with active-low enable (EN) to select one of eight bidirectional analog channels (S1–S8) to a common drain (D). Its CMOS transmission-gate architecture ensures symmetrical conduction and low distortion across the full analog signal range (±15V typical).

It features integrated ESD protection (>2000V per MIL-STD-883 Method 3015.7), operates over –40°C to +85°C, and maintains guaranteed performance across supply voltages without requiring external level-shifting - supporting direct interfacing with microcontroller GPIOs and mixed-signal ASICs.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (U16-1), 4.4mm × 5.0mm body, 0.65mm pitch, exposed pad optional - optimized for thermal dissipation and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG408BRUZ and MAX4617ESE+, the DG408EUE+ uniquely combines guaranteed 8Ω channel matching, 15pC charge injection, and ±20V dual-supply operation - making it optimal for high-accuracy, multi-channel industrial data acquisition where parameter consistency across channels is critical.

Availability

DG408EUE+ is available at Aetrix Electronics and suitable for test equipment, guidance and control systems, and data-acquisition systems requiring stable component supply, extended temperature support (–40°C to +85°C), and long-term obsolescence management.

Supply support for DG408EUE+ 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) designs high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.

The DG408EUE+ belongs to Maxim's precision analog multiplexer product line, engineered specifically for applications demanding low distortion, tight channel matching, and robust operation across wide supply and temperature ranges.

FAQ

What supply voltage ranges does the DG408EUE+ support?

The DG408EUE+ operates from ±5V to ±20V dual supplies or +5V to +30V single supply. When using single supply, V− must be connected to GND. The device maintains guaranteed specifications across this full range, including 100Ω max on-resistance and 15pC max charge injection - enabling interoperability with legacy ±15V systems and modern 12V/24V industrial rails. DG408EUE+ requires no external level shifters for logic interface.

Is the DG408EUE+ pin-compatible with the original DG408?

Yes, the DG408EUE+ is a pin-compatible plug-in upgrade for the industry-standard DG408. All 16 pins match functionally and physically in the TSSOP package, including identical A0–A2 address, EN, V+, V−, GND, D, and S1–S8 assignments. No PCB layout or firmware changes are needed to replace legacy DG408 variants with DG408EUE+, while gaining improved channel matching (8Ω vs. unspecified), lower charge injection (15pC vs. 25pC), and enhanced ESD rating.

What is the maximum allowable analog signal voltage for DG408EUE+?

The DG408EUE+ supports analog signals from V− to V+ - i.e., rail-to-rail operation. With ±15V supplies, the full range is –15V to +15V; with +12V/0V single supply, it is 0V to +12V. Absolute maximum ratings allow V+ up to +44V referenced to V−, but analog signal swing remains bounded by the supply rails. Exceeding V+ or V− clamps signals via internal diodes - limiting usable range to within the applied supply voltages.

How does the DG408EUE+ handle channel switching timing?

The DG408EUE+ guarantees a break-before-make interval of 85ns to 175ns (typical 115ns), preventing momentary shorting between channels during address transitions. Enable-controlled switching provides 150ns max turn-on time and 300ns max turn-off time, with transition times under 250ns. These parameters are tested at ±15V supplies and ensure clean, glitch-free channel selection in high-speed data acquisition - critical for avoiding transient errors in sample-and-hold and multiplexed ADC architectures using DG408EUE+.

Does the DG408EUE+ require external components for ESD protection?

No, the DG408EUE+ integrates robust on-chip ESD protection rated >2000V per MIL-STD-883 Method 3015.7 (HBM), eliminating the need for external TVS diodes or series resistors in most applications. This built-in protection covers all pins - including analog I/O, supplies, and digital controls - and is validated across temperature and process corners. External protection may still be added for extreme environments (e.g., handheld test gear), but DG408EUE+ meets standard IEC 61000-4-2 Level 2 requirements without add-ons.