Analog Devices Inc./Maxim Integrated MAX314FEPE+

Overview

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 process control signal routing where overvoltage transients must be contained without latch-up or damage.

For engineers reviewing the MAX314FEPE+ datasheet, MAX314FEPE+ pinout, MAX314FEPE+ application, or MAX314FEPE+ equivalent, this page delivers verified electrical specs, fault-response timing, package-validated pin functions, and real-world selection guidance for high-reliability analog switching in avionics, ATE, and redundant systems.

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 fault-protection architecture uses independent high- and low-fault comparators monitoring all COM_, NO_, and NC_ terminals against V+ and V−, forcing high-impedance isolation within 600ns when voltage exceeds supply rails.

It supports asymmetric dual supplies (±4.5V to ±20V) or single +9V to +36V operation with GND-connected V−, and features break-before-make timing (5ns typ) only on the MAX314F variant - critical for preventing momentary shorts in mixed NO/NC configurations during state transitions.

Key Specifications

Pinout & Package

MAX314FEPE+ is housed in a 16-pin plastic DIP (dual in-line package) with 0.3-inch body width, through-hole mounting, and industry-standard 0.1-inch pin pitch - compatible with manual soldering, wave soldering, and socket-based prototyping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX314FESE+, the MAX314FEPE+ offers identical functionality with enhanced mechanical reliability for prototyping and ruggedized systems; compared with ADG414BRZ, it provides integrated fault protection, lower R_ON, and guaranteed fail-safe behavior - eliminating design overhead for transient suppression and safety validation.

Availability

MAX314FEPE+ is available at Aetrix Electronics and suitable for industrial process control, avionics signal routing, and automated test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.

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 - emphasizing robustness, precision, and integration.

The MAX312F/MAX313F/MAX314F family was engineered specifically for fault-tolerant analog signal routing in harsh environments, combining rail-to-rail operation, fast fault response, and pin compatibility with legacy switches to simplify system hardening.

FAQ

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

The MAX314FEPE+ sustains ±40V fault voltage on COM_, NO_, or NC_ terminals with all supplies disconnected - verified per Absolute Maximum Ratings. This enables safe handling during board insertion/removal or maintenance in live systems where backfeed or floating potentials may occur. The device remains in high-impedance state without leakage exceeding ±10µA, preserving downstream circuit integrity.

Does the MAX314FEPE+ require external bypass capacitors, and where should they be placed?

Yes, the MAX314FEPE+ requires 0.1µF ceramic bypass capacitors: one from V+ (pin 13) to GND (pin 5), and another from V− (pin 4) to GND (pin 5). These minimize supply noise coupling into analog paths and stabilize internal logic translators. Placement must be within 5mm of respective pins with short, low-inductance traces - omission risks increased R_ON variation and degraded fault recovery timing.

How does the MAX314FEPE+ behave when only V− is powered and V+ is grounded?

When V− is powered (e.g., −15V) and V+ = 0V, the MAX314FEPE+ turns all switches OFF regardless of IN_ logic states - confirmed in the "All Switches Off when V+ is Off and V− is On" feature list. This failsafe behavior prevents unintended conduction during asymmetric power sequencing, protecting connected circuitry from reverse-biased or undefined analog paths.

Can the MAX314FEPE+ operate with asymmetric dual supplies, such as +12V and −5V?

Yes, the MAX314FEPE+ supports asymmetric dual supplies as long as |V+ − V−| ≤ 44V and each rail stays within its Absolute Maximum Rating (V+ ≤ +44V, V− ≥ −44V). For +12V/−5V operation, fault protection remains ±36V referenced to GND, and R_ON increases slightly versus ±15V - consult Figure toc01/toc02 for VCOM-dependent R_ON curves at your specific supply combination.

What is the purpose of the N.C. pin (pin 12) on the MAX314FEPE+?

Pin 12 on the MAX314FEPE+ is a no-connect terminal - internally unconnected and electrically isolated. It must remain unconnected in layout to prevent parasitic capacitance or noise coupling into adjacent pins (e.g., V+, GND, or IN3). Unlike unused logic inputs, it requires no pull-up/down resistor and contributes zero loading to the device's thermal or electrical performance.