Analog Devices Inc./Maxim Integrated DG411FEUE

Overview

DG411FEUE from Maxim Integrated is a quad SPST analog switch with normally closed (NC) configuration, fault-protected inputs, rail-to-rail signal handling, 35Ω max on-resistance at ±15V, ±36V fault protection with power on, and 16-pin TSSOP package. It enables robust signal routing in industrial control systems where overvoltage transients up to ±36V may occur during operation.

For engineers reviewing the DG411FEUE datasheet, DG411FEUE pinout, DG411FEUE application, or DG411FEUE equivalent, key selection criteria include fault-protection voltage limits, on-resistance matching across channels, TTL/CMOS logic compatibility at +12V or ±15V supplies, and verified rail-to-rail analog signal range under dual- or single-supply operation.

Technical Context

The DG411FEUE implements dual-FET parallel architecture (N- and P-channel MOSFETs per switch) to achieve low R_ON and true bidirectional rail-to-rail conduction. Its internal fault-detection comparators monitor COM_, NO_, and NC_ terminals continuously against V+ and V−, triggering high-impedance isolation within 20ns when overvoltage exceeds V+ + 0.05V or V− − 0.05V.

During fault conditions, all four switches enter open-circuit state regardless of control logic level; leakage remains ≤±10µA at ±36V fault voltage. With power removed, fault protection extends to ±40V, and all switches remain off-no external biasing or sequencing required.

Key Specifications

Pinout & Package

Package: 16-pin TSSOP (4.4mm × 5.0mm, 0.65mm pitch), RoHS-compliant, moisture-sensitive level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4711EUE+ and ADG411BRUZ, DG411FEUE uniquely combines 16-pin TSSOP footprint compatibility, ±40V power-off fault tolerance, and support for +9V to +36V single-supply operation-making it the only option qualified for safety-critical industrial and avionics signal routing where supply sequencing and transient resilience are non-negotiable.

Availability

DG411FEUE is available at Aetrix Electronics and suitable for industrial process control, avionics signal routing, and test equipment multiplexing requiring stable component supply, long-term lifecycle support, and guaranteed fault-protection performance.

Supply support for DG411FEUE 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, communications, and computing applications.

The DG411F series belongs to Maxim's fault-protected analog switch product line, designed specifically for mission-critical signal routing in environments prone to electrical overstress, where reliability under fault conditions outweighs raw speed or ultra-low R_ON.

FAQ

What is the maximum fault voltage the DG411FEUE can withstand with power applied?

The DG411FEUE sustains ±36V fault voltage on COM_, NC_, or NO_ terminals with power applied-verified across its full operating temperature range (−40°C to +85°C) and compatible with ±15V dual supplies or +12V single supply. This rating applies regardless of switch state (on/off) and ensures protection against common industrial transients such as inductive kickback or ESD events.

Does the DG411FEUE require power-supply sequencing during startup?

No, the DG411FEUE does not require power-supply sequencing. V+ and V− may be powered in any order, and the device remains fully functional and fault-protected throughout ramp-up. Internal logic-level translators operate correctly even with asymmetric or staggered supply ramps, eliminating risk of undefined states or latch-up during power-on.

How does the DG411FEUE behave when V+ is disconnected but V− remains active?

When V+ is disconnected while V− remains active, the DG411FEUE automatically forces all four switches into the OFF state. This behavior is inherent to its architecture and ensures no signal path remains active-preventing backfeeding, unintended conduction, or damage to upstream circuitry. The NC terminals remain isolated from COM terminals under this condition.

Can the DG411FEUE operate from a single +24V supply?

Yes, the DG411FEUE supports single-supply operation from +9V to +36V. When using +24V, connect V− to GND, configure logic inputs per standard TTL/CMOS thresholds (+0.8V low, +2.4V high), and maintain 0.1µF bypass capacitors on V+ and GND. On-resistance increases slightly versus ±15V operation (≈56Ω max at +24V), but remains monotonic and predictable across V_COM.

Is the DG411FEUE pin-compatible with the legacy DG411?

Yes, the DG411FEUE is fully pin-compatible with the industry-standard DG411. Pin assignments for IN_, COM_, NC_, V+, V−, GND, and N.C. match exactly. This allows direct replacement on existing PCBs without layout changes-enabling immediate upgrade to fault-protected operation while preserving signal integrity and timing margins.