Analog Devices Inc./Maxim Integrated MAX333AEUP

Overview

MAX333AEUP 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 max on-resistance, <2Ω channel-to-channel on-resistance match, 10pC max charge injection, 145ns max turn-off time, and rail-to-rail analog signal handling-used in portable instruments and communications systems for high-fidelity signal routing.

For engineers reviewing the MAX333AEUP datasheet, MAX333AEUP pinout, MAX333AEUP application, or MAX333AEUP equivalent, this device supports precision analog switching in test equipment, PBX systems, and heads-up displays where low leakage (<6nA at +85°C), break-before-make timing (10ns typical), and TTL/CMOS logic compatibility across supply voltages are critical selection criteria.

Technical Context

The MAX333AEUP implements four independent SPDT switches using silicon-gate CMOS technology, with guaranteed flat on-resistance (∆3Ω max) over full analog signal range and matched performance across channels under bipolar supply operation. Its level-translator circuitry enables TTL/CMOS-compatible logic inputs (0.8V–2.4V) regardless of supply voltage.

It delivers rail-to-rail analog signal handling (V− to V+), supports unbalanced supplies (e.g., +24V/−5V), and incorporates electrostatic discharge protection >2000V per Method 3015.7. Break-before-make switching prevents signal shorting during transition, with 175ns max turn-on and 145ns max turn-off times at ±15V.

Key Specifications

Pinout & Package

MAX333AEUP is housed in a 20-pin TSSOP package (5.0mm × 6.5mm, 0.65mm pitch), rated for −40°C to +85°C operation. The package includes exposed pad for thermal enhancement and is RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG408BRUZ and TS5A3157DCKR, the MAX333AEUP uniquely combines quad SPDT topology, bipolar/single-supply flexibility, guaranteed break-before-make, and precision matching-making it irreplaceable in applications requiring simultaneous dual-path selection with high analog fidelity.

Availability

MAX333AEUP is available at Aetrix Electronics and suitable for test equipment, communications infrastructure, and portable instrumentation requiring stable component supply, extended temperature support (−40°C to +85°C), and long-term obsolescence management.

Supply support for MAX333AEUP 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 demanding industrial, medical, and communications applications.

The MAX333A product line delivers high-performance analog switching solutions optimized for signal integrity, low power, and rugged operation in portable and harsh-environment systems.

FAQ

What supply voltage ranges does the MAX333AEUP support?

The MAX333AEUP supports bipolar supplies from ±4.5V to ±20V and single-ended supplies from +10V to +30V. It operates with unbalanced configurations (e.g., +24V/−5V) and maintains rail-to-rail analog signal handling (V− to V+) across all supported supply conditions. Logic inputs remain compatible (0.8V–2.4V thresholds) regardless of supply voltage, enabling direct interfacing with standard microcontrollers and FPGAs without level shifting.

Does the MAX333AEUP provide break-before-make switching, and how is it specified?

Yes, the MAX333AEUP guarantees break-before-make (B-B-M) switching with a typical open time (tOPEN) of 10ns. This specification ensures that the normally closed (NC) path disconnects before the normally open (NO) path connects, preventing momentary short circuits between signal paths. The B-B-M behavior is characterized under standard test conditions (V+ = +16.5V, V− = −16.5V) and remains functional across its full operating temperature range (−40°C to +85°C) and supply voltage envelope.

How does the MAX333AEUP handle analog signals near the supply rails?

The MAX333AEUP provides true rail-to-rail analog signal handling: analog inputs and outputs (COM, NO, NC) operate from V− to V+, with no headroom requirement. This capability is confirmed across all supply configurations-including ±15V, ±10V, and +12V single-supply modes-and is essential for preserving full dynamic range in precision measurement and audio routing. The on-resistance remains flat (∆3Ω max) across the entire signal range, ensuring consistent performance at rail extremes.

What is the maximum allowable leakage current for the MAX333AEUP at elevated temperature?

The MAX333AEUP specifies a maximum off-channel leakage current of 6nA at +85°C, measured at VCOM = ±15.5V and VNC/VNO = ±15.5V with V+ = +16.5V and V− = −16.5V. This value is guaranteed over the full −40°C to +85°C operating range and reflects worst-case performance under worst-case voltage stress. At room temperature, typical leakage is below 0.25nA, supporting high-impedance sensor and precision DC applications.

Is the MAX333AEUP pin-compatible with legacy analog switches like the DG211 or DG403?

Yes, the MAX333AEUP is a direct pin-compatible upgrade for both the DG211/DG212 pair and two DG403 devices, sharing identical 20-pin TSSOP pinout and logic interface. It improves upon those predecessors with lower on-resistance (35Ω vs. 60Ω), tighter channel matching (<2Ω vs. unspecified), guaranteed flat RON (∆3Ω max), and reduced charge injection (10pC vs. 25pC), while maintaining backward-compatible timing and supply requirements.