Analog Devices Inc./Maxim Integrated MAX333AEWP

Overview

MAX333AEWP from Maxim Integrated is a precision quad SPDT CMOS analog switch operating with bipolar supplies (±4.5V to ±20V) or single-ended supplies (+10V to +30V), featuring <35Ω on-resistance, <2Ω channel-to-channel matching, <10pC charge injection, 175ns turn-on time, and rail-to-rail analog signal handling. It serves in high-accuracy test equipment and portable instrumentation where low leakage and flat resistance over voltage range are critical.

For engineers reviewing the MAX333AEWP datasheet, MAX333AEWP pinout, MAX333AEWP application, or MAX333AEWP equivalent, key selection criteria include guaranteed on-resistance flatness (∆3Ω max), break-before-make timing (10ns typical), -40°C to +85°C extended temperature operation, ESD robustness (>2000V), and compatibility with TTL/CMOS logic across supply voltages.

Technical Context

The MAX333AEWP implements four independent SPDT switches using Maxim's silicon-gate CMOS process, enabling simultaneous control of analog signal paths with guaranteed monotonic on-resistance versus VCOM. Its internal level translator supports logic inputs referenced to ground while switching signals spanning V− to V+, eliminating external level-shifting circuitry.

Break-before-make switching prevents momentary shorting between NC and NO terminals during state transitions, critical for multiplexed signal routing in communications systems and PBX infrastructure. Charge injection (<10pC) and off-isolation (72dB) are specified and tested under dual-supply conditions (±15V), ensuring predictable settling behavior in precision measurement front-ends.

Key Specifications

Pinout & Package

MAX333AEWP is housed in a 20-pin wide SOIC package (body width 7.5mm), RoHS-compliant, with standard JEDEC MS-013AC footprint and thermal pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG408BRZ and TS5A3157DCKR, the MAX333AEWP uniquely delivers quad SPDT topology with guaranteed on-resistance matching (<2Ω), bipolar supply capability, and rail-to-rail analog performance-making it irreplaceable in precision test and telecom infrastructure where signal fidelity and thermal stability across channels are mandatory.

Availability

MAX333AEWP is available at Aetrix Electronics and suitable for test equipment, communications systems, PBX infrastructure, and portable instruments requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX333AEWP 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 MAX333A product line was designed specifically for precision analog signal routing in environments demanding low distortion, high channel-to-channel consistency, and robust operation across wide supply and temperature ranges.

FAQ

What is the maximum allowable supply voltage difference for MAX333AEWP?

The MAX333AEWP has an absolute maximum rating of 44V between V+ and V−. Operation beyond this risks permanent damage. For reliable long-term use, bipolar supplies should stay within ±4.5V to ±20V, and single supplies within +10V to +30V. The MAX333AEWP datasheet specifies that exceeding ±20V reduces analog signal range and increases leakage, so design margins should respect the recommended operating ranges-not just absolute limits.

Does MAX333AEWP support rail-to-rail analog signal switching with single-supply operation?

Yes, the MAX333AEWP supports rail-to-rail analog signal handling (VCOM, VNO, VNC from V− to V+) under both bipolar and single-supply configurations. When using a single +12V supply (V− = GND), the analog inputs and outputs swing from 0V to +12V. This capability is explicitly confirmed in the Electrical Characteristics table for single-supply mode and verified in Figure 4 of the MAX333AEWP datasheet.

What is the guaranteed on-resistance flatness specification for MAX333AEWP, and under what conditions does it apply?

The MAX333AEWP guarantees on-resistance flatness of ∆3Ω maximum over the full analog signal range, but only under bipolar-supply operation (e.g., ±15V). This specification is not guaranteed in single-supply mode. The condition is clearly stated in Note 4 of the MAX333AEWP datasheet and validated in Typical Operating Characteristic plot MAX333A-02, which shows RON variation ≤3Ω across VCOM from –15V to +15V at TA = +25°C.

Can MAX333AEWP be used in automotive applications requiring AEC-Q200 qualification?

No, the MAX333AEWP is not AEC-Q200 qualified. It is rated for industrial temperature range (–40°C to +85°C) and intended for commercial/industrial applications such as test equipment and communications infrastructure. While its extended temperature grade meets some automotive ambient conditions, it lacks stress testing, failure analysis, and documentation required for AEC-Q200 compliance. For automotive use, designers must select a qualified alternative or perform full component-level qualification.

How does the logic input compatibility of MAX333AEWP work across different supply voltages?

The MAX333AEWP logic inputs (IN1–IN4) are TTL- and CMOS-compatible with guaranteed thresholds of VIL ≤ 0.8V and VIH ≥ 2.4V - independent of V+ or V− voltage. This means the same 3.3V or 5V microcontroller GPIO can drive all four switches whether powered from ±15V or +24V. This behavior is confirmed in the Electrical Characteristics table under "LOGIC INPUT" section and applies across the full operating temperature range of the MAX333AEWP.