Analog Devices Inc./Maxim Integrated MAX314FEPE

Overview

The MAX314FEPE from Maxim Integrated is a quad SPST analog switch with two normally open (NO) and two normally closed (NC) channels, fault-protected for ±36V (power on) and ±40V (power off), 10Ω max on-resistance at ±15V, rail-to-rail signal handling, and TTL/CMOS-compatible logic inputs - used in industrial signal routing and test equipment where overvoltage resilience is critical.

For engineers reviewing the MAX314FEPE datasheet, MAX314FEPE pinout, MAX314FEPE application, or MAX314FEPE equivalent, this page delivers verified electrical specs, fault-protection behavior, dual/single-supply operation limits, and real-world design implications for hot-swap, redundant systems, and precision data acquisition.

Technical Context

The MAX314FEPE implements dual-FET (N+P channel) parallel switching per channel to achieve low R_ON and true rail-to-rail conduction. Its internal comparators continuously monitor COM_, NO_, and NC_ terminals against V+ and V−, forcing high-impedance isolation during overvoltage faults regardless of switch state.

Fault response is polarity-agnostic: both positive (exceeding V+) and negative (exceeding V−) transients trigger sub-600ns shutdown. Recovery time is 1µs (positive) or 0.6µs (negative), dependent on load RC but not fault amplitude - enabling robust protection in avionics and ATE without signal path interruption.

Key Specifications

Pinout & Package

MAX314FEPE uses a 16-pin plastic DIP package (0.300" wide), RoHS-compliant, with through-hole mounting and standard JEDEC outline. Pin 12 is N.C.; pins 4 (V−) and 5 (GND) require local 0.1µF bypassing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX314CEPE and ADG414BNZ, the MAX314FEPE delivers integrated ±40V fault immunity, 3.5× lower R_ON, and guaranteed break-before-make timing - making it the sole option for unclamped industrial, avionics, and ATE signal routing where failure modes must be hardware-contained.

Availability

MAX314FEPE is available at Aetrix Electronics and suitable for industrial signal routing, automated test equipment, avionics redundancy management, and hot-swap power distribution requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX314FEPE 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 and mixed-signal ICs for demanding industrial, automotive, and communications applications.

The MAX312F/MAX313F/MAX314F product line targets fault-critical analog signal routing where overvoltage resilience, rail-to-rail conduction, and pin-compatible upgrade paths from legacy switches are mandatory design requirements.

FAQ

What is the maximum fault voltage the MAX314FEPE can withstand with power applied?

The MAX314FEPE withstands overvoltage faults up to ±36V on COM_, NO_, or NC_ terminals when power is applied (V+ and V− active). This rating applies across the full operating temperature range of −40°C to +85°C and is validated per Absolute Maximum Ratings in the datasheet. Exceeding ±36V may cause permanent damage even for brief transients.

Does the MAX314FEPE require power-supply sequencing during startup?

No, the MAX314FEPE does not require power-supply sequencing. It operates safely whether V+ powers up before V−, after V−, or simultaneously. The internal logic and fault comparators function correctly across all valid supply ramp profiles - simplifying power management in systems with asymmetric supply turn-on times.

How does the MAX314FEPE behave when V+ is unpowered but V− remains active?

When V+ is unpowered (0V) and V− is active (e.g., −15V), the MAX314FEPE forces all switches into the OFF state regardless of IN_ logic levels. This behavior ensures signal isolation and prevents backfeeding - a critical safety feature in modular systems where supply domains may be independently controlled.

What is the on-resistance matching specification for the MAX314FEPE at +25°C?

The MAX314FEPE guarantees on-resistance matching (ΔR_ON) of ≤0.5Ω maximum between any two channels at +25°C, measured under identical conditions (I_{COM_} = 10mA, V_{NO_}/V_{NC_} = ±10V). This tight matching enables precise gain-setting in multi-channel instrumentation amplifiers and balanced filter networks.

Can the MAX314FEPE operate from a single +12V supply?

Yes, the MAX314FEPE supports single-supply operation from +9V to +36V. For +12V use, connect V− to GND and ensure digital logic inputs meet +0.8V/+2.4V thresholds. On-resistance increases to 25Ω (max) at +12V, and fault protection remains rated to ±36V with power applied and ±40V with power off.