Analog Devices Inc./Maxim Integrated MAX303ESE

Overview

The MAX303ESE 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 max on-resistance, <2Ω matched R_ON between channels, <15pC charge injection, <6nA off-leakage at +85°C, and sub-150ns switching speed - enabling use in sample-and-hold circuits and military-grade test equipment.

For engineers reviewing the MAX303ESE datasheet, MAX303ESE pinout, MAX303ESE application, or MAX303ESE equivalent, key selection criteria include guaranteed R_ON flatness (Δ3Ω max), rail-to-rail analog signal handling (V_ANA = V₋ to V₊), ±4.5V to ±20V or +10V to +30V supply flexibility, and CMOS/TTL logic compatibility with separate VL pin.

Technical Context

The MAX303ESE implements a monolithic silicon-gate CMOS architecture optimized for low distortion and minimal signal path perturbation. Its dual SPDT topology supports independent control of two analog paths with break-before-make timing (10–20ns), while the dedicated VL pin decouples logic-level referencing from analog supply rails.

It guarantees matched on-resistance (<2Ω) and flat R_ON (Δ3Ω max) across the full analog range (V₋ to V₊), enabling precision multiplexing without gain error. Charge injection is tightly controlled at ≤15pC, critical for maintaining accuracy in sampling applications where hold capacitor integrity is essential.

Key Specifications

Pinout & Package

MAX303ESE is housed in a 16-pin narrow SOIC (S16-2) package with 1.27mm pitch, rated for −40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG403BRZ and TS5A3157DCKR, the MAX303ESE uniquely combines dual SPDT topology, guaranteed R_ON matching, ±20V operation, and −40°C to +85°C qualification - making it the only option for precision, high-voltage, temperature-stable analog routing in defense and test equipment.

Availability

MAX303ESE is available at Aetrix Electronics and suitable for sample-and-hold circuits, military radio signal conditioning, battery-operated guidance systems, and high-accuracy test equipment requiring stable component supply across extended temperature ranges.

Supply support for MAX303ESE 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and automotive markets.

The MAX303ESE belongs to Maxim's precision analog switch product line, engineered for applications demanding low distortion, tight parameter matching, and robust operation across wide supply and temperature ranges.

FAQ

What is the maximum allowable supply voltage for the MAX303ESE?

The MAX303ESE has an absolute maximum rating of 44V between V+ and V−. It operates reliably across ±4.5V to ±20V bipolar supplies or +10V to +30V single supplies. Exceeding ±20V or +30V risks violating the 44V total breakdown limit and may cause permanent damage. Always observe proper power sequencing: V+ first, then VL, V−, and logic inputs.

Does the MAX303ESE support rail-to-rail analog signal switching?

Yes, the MAX303ESE supports true rail-to-rail analog signal handling: the analog input/output range extends from V− to V+, up to ±20V. This is enabled by its high-voltage silicon-gate process and 44V breakdown rating. Signals at V− or V+ are switched without clipping, provided supply rails remain within specified operating ranges and sequencing guidelines are followed.

What is the function of the VL pin on the MAX303ESE?

The VL pin on the MAX303ESE sets the logic threshold voltage independently of the analog supplies. It accepts +5V for TTL/CMOS compatibility and allows logic-level translation - for example, using +3.3V or +5V control signals while operating analog supplies at ±15V. Connecting VL to V+ configures the device for CMOS-level inputs; tying it to +5V ensures robust TTL compatibility across temperature and supply variations.

How does the MAX303ESE achieve guaranteed R_ON matching between channels?

The MAX303ESE achieves guaranteed ≤2Ω R_ON matching through Maxim's proprietary silicon-gate process and matched transistor layout design. This specification is tested and guaranteed over temperature (−40°C to +85°C) and across the full analog signal range (V− to V+). Matching is critical for differential signal integrity and dual-path instrumentation where gain tracking errors must be minimized.

Is the MAX303ESE pin-compatible with other devices in the MAX301/MAX303/MAX305 family?

Yes, the MAX303ESE shares identical pinout and package (16-pin narrow SO) with all MAX303 variants (e.g., MAX303CSE, MAX303EPE) and is functionally distinct but footprint-compatible with MAX301ESE and MAX305ESE - all use the same DIP/SO pin configuration. However, logic behavior and channel configuration differ: MAX301 is dual SPST-NO, MAX303 is dual SPDT, and MAX305 is quad SPST-NO. PCB layout reuse is possible, but firmware and signal routing must be verified per device function.