Analog Devices Inc./Maxim Integrated MAX312LEPE

Overview

MAX312LEPE from Maxim Integrated is a quad, normally closed (NC), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in industrial and test equipment. It delivers 10Ω max on-resistance, 1.5Ω max on-resistance matching between channels, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and rail-to-rail analog signal handling up to ±15V. Its +3V logic-compatible inputs (VIH = 2.0V, VIL = 0.8V) enable direct interfacing with microcontrollers.

For engineers reviewing the MAX312LEPE datasheet, MAX312LEPE pinout, MAX312LEPE application, or MAX312LEPE equivalent, this page provides verified electrical specs, thermal performance across –40°C to +85°C, leakage data at temperature extremes, switching timing under load, and real-world audio/test-system implementation guidance - all specific to the 16-pin Plastic DIP package.

Technical Context

The MAX312LEPE implements four independent NC SPST switches using CMOS process technology, with internal charge-pump-free architecture enabling power-supply sequencing-free operation. Each channel supports bidirectional conduction, exhibits <2.5nA off-leakage at +85°C, and maintains R_ON flatness ≤4Ω over its full analog signal range.

Its logic interface operates independently of supply rails: VIH remains fixed at 2.0V and VIL at 0.8V across ±4.5V to ±20V dual supplies or +4.5V to +36V single supply. The device guarantees break-before-make timing only in the MAX314L variant - not applicable to MAX312LEPE - and offers no internal level-shifting circuitry.

Key Specifications

Pinout & Package

MAX312LEPE is housed in a 16-pin Plastic DIP package (package code P16-2), through-hole mountable with 0.300" wide body and standard 0.1" pin pitch. Pin 1 is located at the left end of the top row when viewed from the top with notch or dot oriented upward.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX312CPE, MAX312LEPE adds guaranteed operation down to –40°C and up to +85°C - essential for outdoor, automotive, or aerospace use. Against ADG441BNZ, MAX312LEPE provides lower R_ON, tighter matching, and NC default behavior, making it superior for fail-safe signal routing where continuity is required at power-up.

Availability

MAX312LEPE is available at Aetrix Electronics and suitable for automated test equipment, industrial data acquisition, and professional audio routing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX312LEPE 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.

The MAX312L/MAX313L/MAX314L family was designed specifically for robust, low-distortion analog signal switching in harsh environments - emphasizing extended temperature operation, supply flexibility, and guaranteed parametric performance without sequencing constraints.

FAQ

What is the maximum allowable supply voltage for MAX312LEPE?

The MAX312LEPE supports dual supplies from ±4.5V to ±20V or a single supply from +4.5V to +36V. Absolute maximum ratings specify V+ up to +44V and V− down to –44V relative to GND. Exceeding these limits risks permanent damage. For reliable operation, stay within the recommended ranges and observe derating curves in the datasheet.

Does MAX312LEPE require power-supply sequencing?

No, MAX312LEPE does not require power-supply sequencing. Unlike earlier MAX312 variants, it eliminates the VL pin and supports arbitrary power-up order of V+, V−, and GND. This simplifies system design and removes latch-up risk - provided absolute maximum ratings are never exceeded during startup or transient conditions.

What is the function of the NC pins on MAX312LEPE?

The NC pins (pins 3, 6, 11, 14) on MAX312LEPE are Normally Closed analog terminals. When the corresponding INx input is logic low (0), the switch conducts between COMx and NCx. When INx is logic high (1), the path opens. This default-closed behavior provides fail-safe continuity in power-loss or controller-fault scenarios.

Can MAX312LEPE operate from a single +12V supply?

Yes, MAX312LEPE operates from a single +12V supply. Connect V− to GND, apply +12V to V+, and route analog signals between 0V and +12V. In this configuration, R_ON is 35Ω max, analog signal range is 0V to +12V, and logic thresholds remain VIH = 2.0V and VIL = 0.8V - fully compatible with 3.3V or 5V digital controllers.

How does MAX312LEPE differ from MAX313LEPE?

MAX312LEPE is a normally closed (NC) quad SPST switch, while MAX313LEPE is normally open (NO). Their pinouts and electrical specs (R_ON, leakage, timing) are identical except for default state. Control logic is inverted: for MAX312LEPE, INx = 0 enables conduction; for MAX313LEPE, INx = 1 enables conduction. They are not functionally interchangeable without logic inversion.