Analog Devices Inc./Maxim Integrated MAX333AEPP

Overview

MAX333AEPP from Maxim Integrated is a precision quad SPDT CMOS analog switch designed for high-fidelity signal routing in industrial and portable test equipment. It operates from ±4.5V to ±20V bipolar or +10V to +30V single supply, delivers <35Ω on-resistance (max), <2Ω channel-to-channel match, and <10pC charge injection-enabling low-distortion switching of rail-to-rail analog signals up to ±15.5V in systems like automated test fixtures and communications front-ends.

For engineers reviewing the MAX333AEPP datasheet, MAX333AEPP pinout, MAX333AEPP application, or MAX333AEPP equivalent, this device is selected for precision analog multiplexing where low leakage (<6nA at +85°C), fast switching (t_ON < 175ns), break-before-make timing (10ns typ), and wide temperature operation (–40°C to +85°C) are critical to signal integrity and system reliability.

Technical Context

The MAX333AEPP implements four independent SPDT switches using silicon-gate CMOS process technology, with internal level translation enabling TTL/CMOS-compatible logic inputs (0.8V to 2.4V) regardless of supply voltage. Its architecture guarantees flat on-resistance (∆3Ω max) over full analog signal range and matched R_ON between channels-critical for gain-matching in multi-channel instrumentation.

It supports true rail-to-rail analog signal handling (V_COM, V_NO, V_NC = V_– to V₊), features electrostatic discharge protection >2000V (HBM), and maintains sub-50µA quiescent current across its –40°C to +85°C operating range-making it suitable for battery-powered portable instruments requiring low standby power and robust ESD immunity.

Key Specifications

Pinout & Package

MAX333AEPP is housed in a 20-pin plastic DIP package rated for –40°C to +85°C operation. The package includes 4 COM, 4 NO, 4 NC, 4 IN, plus V+, V–, GND, and one N.C. terminal - optimized for through-hole prototyping and industrial PCB layouts requiring thermal and mechanical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG408BRZ and TS5A3157DCKR, the MAX333AEPP uniquely combines quad SPDT topology, bipolar/single-supply flexibility, guaranteed R_ON matching, and –40°C to +85°C operation-making it irreplaceable in high-accuracy, wide-temperature, high-voltage analog multiplexing.

Availability

MAX333AEPP is available at Aetrix Electronics and suitable for automated test equipment, communications infrastructure, avionics displays, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX333AEPP 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 markets.

The MAX333A product line delivers precision analog switching solutions for applications demanding low distortion, high channel matching, and robust operation across wide voltage and temperature ranges-targeting test & measurement, telecom, and aerospace systems.

FAQ

What is the maximum analog signal voltage range supported by the MAX333AEPP?

The MAX333AEPP supports rail-to-rail analog signal handling from V– to V+, with absolute maximum ratings allowing V_COM/V_NO/V_NC to swing between –30V and +30V. Under standard ±15V operation, it reliably passes signals from –15.5V to +15.5V without damage or performance degradation. This capability is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics sections of the MAX333AEPP datasheet.

Does the MAX333AEPP require external charge pump or level-shifting circuitry for TTL/CMOS logic compatibility?

No, the MAX333AEPP includes integrated level translation and guarantees TTL/CMOS logic compatibility across its full supply range: input thresholds are fixed at 0.8V (low) and 2.4V (high), independent of V+ or V– voltage. This eliminates need for external translators and simplifies interface design with microcontrollers or FPGAs-verified in the Logic Input section of the MAX333AEPP Electrical Characteristics table.

Can the MAX333AEPP be used in single-supply configurations, and what are the constraints?

Yes, the MAX333AEPP operates from +10V to +30V single supply (with V– tied to GND). In this mode, analog signals still span 0V to V+, but on-resistance increases (up to 90Ω max at +12V) and leakage rises slightly. These trade-offs are documented in the Single-Supply Electrical Characteristics table of the MAX333AEPP datasheet and must be accounted for in precision applications.

What is the guaranteed on-resistance matching specification for the MAX333AEPP, and under what conditions does it apply?

The MAX333AEPP guarantees ≤2Ω on-resistance matching between any two channels, but this specification applies only under bipolar-supply operation (e.g., ±15V). The datasheet explicitly states in Note 4 that R_ON match and flatness are guaranteed solely with bipolar supplies-not in single-supply mode. This constraint is critical for gain-matched multiplexing in instrumentation-grade MAX333AEPP designs.

How does the MAX333AEPP handle electrostatic discharge, and is external protection required?

The MAX333AEPP is rated for >2000V HBM ESD per Method 3015.7, verified during production testing. Its internal structure includes ESD diodes and layout hardening, eliminating need for external TVS devices in most board-level environments. However, in high-risk handling or connector-exposed applications, supplemental protection remains recommended-per guidance in the Applications Information section of the MAX333AEPP datasheet.