Analog Devices Inc./Maxim Integrated MAX4525ETB-T

Overview

MAX4525ETB-T from Maxim Integrated is a low-voltage, single-supply DPDT analog switch optimized for rail-to-rail signal routing in battery-powered and portable systems. It features 200Ω on-resistance at +5V, 2nA max off-leakage at +25°C, TTL/CMOS-compatible logic thresholds, and operates from +2V to +12V. Its inhibit input disables all paths simultaneously-critical for power-sensitive audio/video multiplexing.

For engineers reviewing the MAX4525ETB-T datasheet, MAX4525ETB-T pinout, MAX4525ETB-T application, or MAX4525ETB-T equivalent, this page delivers verified electrical specs, TDFN-EP package details, real-world use cases in low-voltage data acquisition and communications circuits, and two validated alternative parts with documented functional and application-level differences.

Technical Context

The MAX4525ETB-T implements a double-pole/double-throw (DPDT) switch architecture using CMOS transmission gates, enabling bidirectional analog signal routing without polarity constraints. Its internal logic decodes ADDA/ADDB address inputs to select between COMA–NOA/NCB and COMB–NOB/NCB paths, while INH asserts global disable across both poles.

It integrates ESD protection diodes on all analog pins referenced to V+ and GND, limiting analog signal range to rail-to-rail but requiring external clamping if signals exceed supply rails. Switch performance-including 200Ω R_ON, 8Ω channel matching, and <2nA leakage-is guaranteed over –40°C to +85°C for industrial-grade operation.

Key Specifications

Pinout & Package

MAX4525ETB-T uses a 10-pin TDFN-EP package (3mm × 3mm) with exposed pad connected to V+. Pin functions are electrically identical across all MAX4525 variants; pin numbering follows JEDEC MO-229 / WEED-3 standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4525EUB-T, MAX4525ETB-T offers 6× higher thermal power handling and lower thermal resistance; compared with TMUX6219RTER, it provides superior leakage performance (2nA vs. 10nA) and seamless 3.3V/5V logic compatibility without auxiliary supplies.

Availability

MAX4525ETB-T is available at Aetrix Electronics and suitable for battery-operated equipment, audio/video signal routing, low-voltage data-acquisition systems, and communications circuits requiring stable component supply across industrial temperature ranges.

Supply support for MAX4525ETB-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, medical, and communications applications.

The MAX4524/MAX4525 product line delivers low-voltage, single-supply analog switching solutions targeting portable and power-constrained systems where rail-to-rail signal integrity and minimal leakage are essential.

FAQ

What is the maximum analog signal voltage range supported by the MAX4525ETB-T?

The MAX4525ETB-T supports rail-to-rail analog signals from GND to V+, meaning the full signal swing must remain within the device's positive supply voltage and ground. For example, with a +5V supply, analog inputs/outputs may range from 0V to +5V. Exceeding these limits forward-biases internal ESD diodes and risks damage or increased leakage. The MAX4525ETB-T does not support negative voltages or signals beyond V+ or below GND without external clamping.

Does the MAX4525ETB-T require dual supplies or level-shifting circuitry for 3.3V logic interfacing?

No, the MAX4525ETB-T does not require dual supplies or level shifters for 3.3V logic. Its logic inputs (ADDA, ADDB, INH) have guaranteed thresholds of 0.5V to 2.0V at +3V supply and 0.8V to 2.4V at +5V supply, making them fully compatible with standard 3.3V CMOS outputs. The MAX4525ETB-T operates natively from a single +2V to +12V supply, simplifying system design in mixed-voltage environments.

How does the exposed pad on the MAX4525ETB-T's TDFN package function electrically and thermally?

The exposed pad on the MAX4525ETB-T's 10-pin TDFN-EP package is internally connected to V+ and must be soldered to a V+-referenced copper pour on the PCB. Electrically, it enhances ESD robustness and reduces package inductance. Thermally, it lowers junction-to-board thermal resistance, enabling 1951mW continuous power dissipation at +70°C-more than 5× the µMAX variant's rating. This improves reliability in high-duty-cycle or ambient-temperature-critical applications.

Can the MAX4525ETB-T be used in break-before-make (BBM) configurations, and how is timing controlled?

Yes, the MAX4525ETB-T inherently supports break-before-make operation due to its internal address decoding and gate drive timing. Measured BBM time is 5ns typical at +5V (Figure 3), ensuring no overlap between old and new signal paths during address transitions. This eliminates momentary short-circuits in sensitive analog routing. No external timing components are needed-the BBM interval is fixed by the silicon design and guaranteed across –40°C to +85°C.

What is the guaranteed on-resistance matching specification for the MAX4525ETB-T, and why does it matter in precision applications?

The MAX4525ETB-T guarantees ≤8Ω on-resistance matching (∆R_ON) between any two channels at +5V. This means the difference between the highest and lowest R_ON values across all four switched paths (COMA–NOA, COMA–NCA, COMB–NOB, COMB–NCB) will not exceed 8Ω. In precision applications like differential sensor multiplexing or calibrated signal routing, tight R_ON matching prevents channel-to-channel gain variation-critical for maintaining ≤0.1% measurement consistency without per-channel calibration.