Analog Devices Inc./Maxim Integrated MAX354EPE+

Overview

MAX354EPE+ from Maxim Integrated is a fault-protected single 8-channel analog multiplexer with series N-P-N switch architecture, operating from ±4.5V to ±18V dual supplies or +4.5V to +36V single supply, featuring 350Ω max on-resistance, <0.5nA input leakage at +25°C, and guaranteed break-before-make switching - used in industrial data-acquisition systems for robust signal routing under overvoltage fault conditions up to ±40V.

For engineers reviewing the MAX354EPE+ datasheet, MAX354EPE+ pinout, MAX354EPE+ application, or MAX354EPE+ equivalent, this page delivers verified electrical parameters, fault-protection behavior under power-off conditions, leakage vs. temperature curves, charge injection values across supply voltages, and precise pin-function mapping for PCB layout and system-level fault tolerance validation.

Technical Context

The MAX354EPE+ implements a three-FET series structure (N–P–N) that actively clamps analog inputs to within 1.5V of supply rails during overvoltage events, limiting output voltage and restricting fault current to sub-microamp levels even with V+ and V- unpowered. Its digital logic thresholds (0.8V/2.4V) ensure TTL/CMOS compatibility without pull-ups.

Switching is controlled by three address lines (A0–A2) and an enable (EN), supporting eight independent bidirectional analog paths between COM and NO1–NO8. All channels turn off when supplies are absent, and on-switches automatically disable during overvoltage - eliminating need for external protection diodes or sequencing controls.

Key Specifications

Pinout & Package

MAX354EPE+ is housed in a 16-pin plastic DIP package (0.300" width), rated for -40°C to +85°C operation, with through-hole mounting and industry-standard footprint compatible with legacy test fixtures and industrial control boards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG508F and MAX358, the MAX354EPE+ uniquely combines 8:1 multiplexing, full power-off fault blocking, and single-package integration - making it optimal for space-constrained industrial DAQ where supply reliability cannot be assumed.

Availability

MAX354EPE+ is available at Aetrix Electronics and suitable for industrial data-acquisition systems, 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) designs precision analog, mixed-signal, and power-management ICs for industrial, automotive, and communications applications - emphasizing ruggedness, accuracy, and integration density.

The MAX354/MAX355 family was engineered specifically for fault-tolerant analog signal routing in harsh environments, targeting applications where overvoltage survival and supply-agnostic protection are non-negotiable design requirements.

FAQ

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

The MAX354EPE+ withstands continuous ±40V overvoltage on any analog input (NOx or COM) with V+ and V- unpowered. Internal gate structures block conduction paths, limiting leakage to <100nA and preventing damage or latch-up - a key differentiator from standard CMOS muxes that fail catastrophically under such conditions. This capability is fully specified in the Absolute Maximum Ratings table and validated across the -40°C to +85°C operating range for MAX354EPE+.

Does the MAX354EPE+ support demultiplexing operation, and how does fault protection behave in that mode?

Yes, the MAX354EPE+ operates bidirectionally and functions as a demultiplexer when the COM pin is driven and NO1–NO8 serve as outputs. Fault protection remains fully active: overvoltage on any NOx pin clamps the COM output to within 1.5V of the supply rails, and all switches turn off if V+ or V- drops below operational thresholds. This behavior is explicitly confirmed in the Detailed Description section and supported by Figures 8–11 in the MAX354/MAX355 datasheet.

How does on-resistance variation affect precision measurement accuracy in the MAX354EPE+?

The MAX354EPE+ specifies 350Ω max on-resistance with ≤15Ω matching between channels (∆RON). At 1mA signal current, this introduces ≤350µV IR drop - negligible for 12-bit systems but critical for 16-bit+ resolution. RON also varies ±15% over temperature and ±25% across analog voltage range (±10V), so gain calibration must account for channel-specific RON if absolute accuracy <0.1% is required. These dependencies are quantified in Figures 1a, 1b, and 2 of the datasheet.

Can the MAX354EPE+ operate from a single +12V supply, and what are the resulting analog signal limits?

Yes, the MAX354EPE+ operates from a single +12V supply with V- tied to GND. In this configuration, the analog signal range is limited to approximately +10.5V (V+ − 1.5V) at the upper end and 0V at the lower end - since the internal P-channel FET cannot clamp below GND. Output swing is thus 0V to +10.5V, and RON increases slightly versus ±15V operation due to reduced VGS margin. This behavior is documented in the "Operation with Supply Voltages Other than ±15V" section.

What is the typical charge injection value for the MAX354EPE+, and how does it impact ADC sampling?

The MAX354EPE+ exhibits 15pC to 180pC charge injection depending on supply and analog voltage (e.g., 15pC at ±15V with ±10V input). Injected charge creates a voltage step ∆V = Q/C_L on the output node; with 1000pF load capacitance, 15pC yields a 15mV transient. This demands sufficient settling time before ADC acquisition - typically 1–2µs for 0.01% accuracy per the t_SETT specification. Values are measured per Table 1 and Figure 4 in the official datasheet.