Analog Devices Inc./Maxim Integrated MAX354EPE

Overview

MAX354EPE from Maxim Integrated is a fault-protected single 8-channel analog multiplexer IC designed for high-reliability signal routing in industrial and avionics systems. It operates from ±4.5V to ±18V dual supplies (or +4.5V to +36V single supply), features 350Ω max on-resistance, <0.5nA input leakage at +25°C, and guarantees break-before-make switching. It protects against ±40V overvoltage with power off and clamps outputs to within 1.5V of supply rails during faults.

For engineers reviewing the MAX354EPE datasheet, MAX354EPE pinout, MAX354EPE application, or MAX354EPE equivalent, key selection considerations include its fault-tolerant series N-P-N switch architecture, -40°C to +85°C extended temperature rating, 16-pin plastic DIP package, and compatibility with TTL/CMOS logic without pull-ups.

Technical Context

The MAX354EPE implements a three-FET series structure (N-channel–P-channel–N-channel) that actively limits fault current to sub-microamp levels during overvoltage events up to ±40V, regardless of supply state. Its analog signal path remains isolated when V+ and V- are unpowered, and output clamping occurs at approximately 1.5V below V+ and 1.5V above V-.

Digital control uses 0.8V/2.4V logic thresholds referenced to GND, ensuring robust TTL/CMOS compatibility across temperature and supply variations. Switching behavior includes guaranteed break-before-make timing (≥100ns), 180ns typical transition time, and charge injection as low as 15pC at ±15V supplies with ±10V analog inputs.

Key Specifications

Pinout & Package

MAX354EPE is housed in a 16-pin plastic DIP (dual in-line package) with 0.3-inch width, through-hole mounting, and industry-standard pin spacing. Pin 1 is marked by a notch or dot; pin numbering proceeds counterclockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG508F and DG458, the MAX354EPE delivers unique integrated ±40V fault survival with active clamping-enabling simplified BOM, reduced PCB area, and elimination of external protection components in harsh environments.

Availability

MAX354EPE is available at Aetrix Electronics and suitable for industrial process control, avionics signal routing, and ATE equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX354EPE 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, and communications markets.

The MAX354/MAX355 product line was engineered specifically for fault-tolerant analog signal routing in safety-critical and electrically noisy environments, emphasizing robustness over raw speed or ultra-low R_ON.

FAQ

What is the maximum overvoltage the MAX354EPE can withstand with power supplies disconnected?

The MAX354EPE withstands continuous ±40V overvoltage on any NOx or COM pin when V+ and V− are at 0V. This is achieved via its series N-P-N FET structure, which blocks conduction paths while limiting leakage to sub-nanoamp levels. The MAX354EPE does not require external protection components to meet this specification under zero-supply conditions.

Does the MAX354EPE support demultiplexing operation, and how is it configured?

Yes, the MAX354EPE supports bidirectional operation and functions as a demultiplexer when the COM pin is driven with an analog signal and NO1–NO8 are used as outputs. The internal switch architecture and break-before-make timing remain fully functional in demux mode, preserving fault protection and preventing channel shorts during reconfiguration - unlike earlier-generation fault-protected muxes.

What is the guaranteed on-resistance matching between channels for the MAX354EPE?

The MAX354EPE guarantees ∆RON (RON_MAX − RON_MIN) ≤ 15Ω across all eight channels at TA = TMIN to TMAX. This tight matching ensures consistent gain and offset errors when routing multiple sensor signals through different channels into a shared amplifier or ADC, critical for high-accuracy data acquisition systems.

Can the MAX354EPE operate from an asymmetrical supply, such as +15V and −5V?

Yes, the MAX354EPE supports asymmetrical supplies including +15V/V− = −5V. Its analog performance-including on-resistance, leakage, and fault-clamp levels-depends on the total V+–V− differential. With +15V/−5V, the output swing is limited to approximately +13.5V and −3.5V, and digital thresholds remain referenced to GND at 0.8V/2.4V, maintaining full logic compatibility.

How does the MAX354EPE handle input overvoltage when powered, and what is the clamping behavior?

When powered, the MAX354EPE clamps the COM or NOx output to within 1.5V of V+ and V− during overvoltage. For example, with V+ = +15V and V− = −15V, the output is limited to +13.5V and −13.5V. This clamping occurs without polarity reversal or glitches, and the on-resistance rises to infinity beyond these limits, effectively isolating the fault while protecting downstream circuitry.