Analog Devices Inc./Maxim Integrated MAX333ACUP+T

Overview

MAX333ACUP+T from Maxim Integrated is a precision quad SPDT CMOS analog switch with 20-pin TSSOP package, ±4.5V to ±20V or +10V to +30V supply operation, <35Ω on-resistance (max), <2Ω channel-to-channel match, and <10pC charge injection-used in portable test equipment for rail-to-rail signal routing with break-before-make switching.

For engineers reviewing the MAX333ACUP+T datasheet, MAX333ACUP+T pinout, MAX333ACUP+T application, or MAX333ACUP+T equivalent, this page delivers verified electrical specs, real-world timing behavior, thermal performance across -40°C to +85°C, and direct alternatives for high-precision analog multiplexing in battery-powered instrumentation.

Technical Context

The MAX333ACUP+T implements four independent SPDT switches using silicon-gate CMOS process, supporting both bipolar (±4.5V–±20V) and single-ended (+10V–+30V) supplies. Its logic inputs are TTL/CMOS-compatible over 0.8V–2.4V regardless of supply voltage, and analog signals swing rail-to-rail between V+ and V− without damage.

Break-before-make timing is guaranteed at 10ns typical with tON < 175ns and tOFF < 145ns under dual-supply conditions. On-resistance flatness (∆3Ω max) and matching (<2Ω) are specified only for bipolar operation, while charge injection (≤10pC) and off-leakage (<6nA at +85°C) ensure minimal signal disturbance in precision sampling circuits.

Key Specifications

Pinout & Package

MAX333ACUP+T uses a 20-pin TSSOP package (4.4mm × 6.5mm, 0.65mm pitch) with exposed pad for thermal enhancement. Pin 6 is GND; pins 5 and 16 are V− and V+, respectively; pins 1,10,11,20 are logic inputs (IN1–IN4); pins 2,9,12,19 are NO terminals; pins 4,7,14,17 are NC terminals; pins 3,8,13,18 are COM terminals; pin 15 is not internally connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG408BRUZ and TS5A3159DCKR, the MAX333ACUP+T uniquely combines quad SPDT topology, guaranteed break-before-make, bipolar supply support, and <2Ω channel matching-making it irreplaceable in precision, high-voltage, dynamically switched instrumentation.

Availability

MAX333ACUP+T is available at Aetrix Electronics and suitable for test equipment, communications systems, heads-up displays, and portable instruments requiring stable component supply with extended temperature qualification and long-term production support.

Supply support for MAX333ACUP+T 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) designs precision analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX333A product line delivers high-performance analog switching solutions optimized for test and measurement, telecom infrastructure, and portable instrumentation demanding low distortion, rail-to-rail operation, and robust ESD tolerance.

FAQ

What supply voltage ranges does the MAX333ACUP+T support?

The MAX333ACUP+T supports bipolar supplies from ±4.5V to ±20V and single-ended supplies from +10V to +30V. When using single-supply operation, V− must be connected to ground. The device maintains rail-to-rail analog signal handling across these ranges, and its logic inputs remain compatible with TTL/CMOS levels regardless of supply configuration. Absolute maximum ratings limit V+ to +30V and V− to -30V relative to ground.

Does the MAX333ACUP+T guarantee break-before-make switching?

Yes, the MAX333ACUP+T guarantees break-before-make operation with a typical open interval of 10ns. This ensures no momentary short-circuit occurs between NC and NO paths during switching-a critical feature for protecting downstream circuitry in multiplexer-based signal routing. The specification is validated under standard dual-supply conditions (e.g., V+ = +15V, V− = −15V) and is not guaranteed for single-supply operation unless explicitly tested per application conditions.

What is the maximum operating temperature for the MAX333ACUP+T?

The MAX333ACUP+T is rated for operation from −40°C to +85°C. This extended temperature range qualifies it for industrial and communications applications where ambient conditions exceed commercial-grade limits. Electrical characteristics-including on-resistance match, leakage current, and switching times-are specified across this full range, with data sheets confirming <6nA off-leakage at +85°C and stable RON flatness up to the upper limit.

Can the MAX333ACUP+T be used with unbalanced supplies like +24V and −5V?

Yes, the MAX333ACUP+T can operate with unbalanced supplies such as +24V and −5V. The device's absolute maximum rating allows up to 44V between V+ and V−, and analog signal range remains V− to V+. However, performance parameters like on-resistance and switching speed may deviate from typical bipolar ±15V values-designers should consult the "Operation with Supply Voltages Other than ±15V" section of the MAX333A datasheet for derating guidance and verify timing margins in final layout.

How does the MAX333ACUP+T handle logic-level compatibility across different supply voltages?

The MAX333ACUP+T guarantees TTL/CMOS logic compatibility over an input voltage range of +0.8V to +2.4V, independent of V+ or V− supply levels. This means logic inputs function correctly whether powered from ±15V, +12V, or +24V supplies-no level translators needed. Input current remains below ±1.0µA across temperature, minimizing loading on microcontroller GPIOs or FPGA outputs driving the IN1–IN4 pins of the MAX333ACUP+T.