Analog Devices Inc./Maxim Integrated MAX303EPE

Overview

MAX303EPE from Maxim Integrated is a precision dual SPDT analog switch with two normally open (NO) and two normally closed (NC) poles, designed for high-accuracy signal routing in bipolar or single-supply systems. It delivers ≤35Ω on-resistance (max), <2Ω channel-to-channel match, <15pC charge injection, <6nA off-leakage at +85°C, and sub-100ns turn-off time - enabling low-distortion sampling in test equipment and military radios.

For engineers reviewing the MAX303EPE datasheet, MAX303EPE pinout, MAX303EPE application, or MAX303EPE equivalent, key selection criteria include rail-to-rail analog signal handling (±15V), guaranteed on-resistance flatness (Δ5Ω max), CMOS/TTL-compatible logic inputs, and -40°C to +85°C industrial temperature operation.

Technical Context

The MAX303EPE implements a monolithic silicon-gate CMOS architecture optimized for precision analog switching, featuring matched transistor pairs to ensure ≤2Ω on-resistance tracking between its two independent SPDT channels. Its break-before-make timing (10–20ns) prevents signal shorting during state transitions.

It supports dual supply operation (±4.5V to ±20V) or single supply (+10V to +30V), with separate VL pin for +5V logic-level compatibility independent of analog rail voltages. Internal clamping diodes protect NO/NC/COM pins against overvoltage up to V± +2V.

Key Specifications

Pinout & Package

MAX303EPE is housed in a 16-pin plastic DIP (P16-1) package with 0.3-inch width, through-hole mounting, and industry-standard pin spacing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG403BRZ and TS5A23157DRCR, the MAX303EPE uniquely combines guaranteed channel matching, <15pC charge injection, and ±20V bipolar operation - making it irreplaceable in high-accuracy, wide-temperature, rail-to-rail analog switching applications.

Availability

MAX303EPE is available at Aetrix Electronics and suitable for test equipment multiplexing, military radio signal routing, heads-up display calibration, battery-operated medical sensors, and precision sample-and-hold circuits requiring stable component supply across extended temperature ranges.

Supply support for MAX303EPE 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 automotive markets.

The MAX303EPE belongs to Maxim's precision analog switch product line, engineered for applications demanding low distortion, tight parameter matching, and robust operation in harsh environments - including military, aerospace, and automated test systems.

FAQ

What is the maximum analog signal voltage range supported by the MAX303EPE?

The MAX303EPE supports rail-to-rail analog signals from V− to V+, with absolute maximum ratings of ±44V on V+ and V−. When operated at ±15V supplies, it reliably switches signals across the full ±15V range. This capability is confirmed in the Electrical Characteristics table and Typical Operating Characteristics graphs (e.g., Figure MAX301-1), and applies directly to the MAX303EPE variant per the Ordering Information table specifying identical electrical specs across P16-1 packaged variants.

Does the MAX303EPE require separate logic and analog supplies?

Yes - the MAX303EPE requires three distinct supply connections: V+ and V− for the analog signal path, and VL (tied to +5V) for logic-level compatibility. The VL pin is electrically isolated from V+ and V−, allowing TTL/CMOS logic interfacing even when analog rails operate at ±15V or +24V. This separation is explicitly defined in the Pin Descriptions and Applications Information sections of the datasheet and applies identically to the MAX303EPE.

What is the guaranteed on-resistance match between the two SPDT channels of the MAX303EPE?

The MAX303EPE guarantees on-resistance matching of ≤2Ω between its two SPDT channels at +25°C, and ≤3Ω over the full −40°C to +85°C operating range. This specification is explicitly listed in the Electrical Characteristics table under "On-Resistance Match Between Channels" and is validated for all MAX303 variants including the MAX303EPE, as confirmed by the unified parametric table covering MAX303C/E/M suffixes.

Can the MAX303EPE operate from a single positive supply?

Yes - the MAX303EPE supports single-supply operation from +10V to +30V, with analog signals ranging from ground to V+. In this configuration, V− is connected to GND, VL remains at +5V, and the device retains full CMOS/TTL logic compatibility and fast switching performance. This mode is documented in both the General Description and Applications Information sections and applies to the MAX303EPE without deviation.

What is the maximum allowable leakage current for the MAX303EPE at its upper temperature limit?

At +85°C, the MAX303EPE guarantees off-channel leakage current of ≤6nA for both NC and NO terminals, and ≤6nA for COM off-leakage - as specified in the Electrical Characteristics table under "Off-Leakage Current" with condition TA = TMIN to TMAX. This value is confirmed for the E-grade (-40°C to +85°C) variants including MAX303EPE, and reflects worst-case behavior across process and temperature corners.