Analog Devices Inc./Maxim Integrated MAX4741EUA+T

Overview

MAX4741EUA+T from Maxim Integrated is a dual single-pole/single-throw (SPST) analog switch with two normally open (NO) channels, designed for low-voltage signal routing in battery-powered systems. It operates from a single +1.6V to +3.6V supply, delivers 0.8Ω max on-resistance at +3V, 24ns turn-on time, and consumes <1µW quiescent power - enabling high-fidelity audio/video switching and precision data-acquisition paths.

For engineers reviewing the MAX4741EUA+T datasheet, MAX4741EUA+T pinout, MAX4741EUA+T application, or MAX4741EUA+T equivalent, key selection criteria include rail-to-rail analog signal handling, 150mA continuous current capability, 1.8V CMOS logic compatibility at +3V supply, and µMAX package thermal performance (362mW at +70°C).

Technical Context

The MAX4741EUA+T uses CMOS switch architecture to support bidirectional analog signal routing across the full GND-to-V+ range. Its dual NO configuration enables independent control of two signal paths via separate IN1/IN2 logic inputs, with no break-before-make timing requirement.

Switching performance is optimized for low distortion: 0.18Ω max R_ON flatness ensures minimal signal-dependent gain variation, while 32pF off-capacitance and -55dB off-isolation at 1MHz suppress crosstalk in multi-channel routing applications.

Key Specifications

Pinout & Package

The MAX4741EUA+T is housed in an 8-pin µMAX package (U8-1), measuring 3.05mm × 3.05mm × 1.05mm with exposed pad for thermal enhancement. This thermally robust, surface-mount package supports industrial temperature operation (-40°C to +85°C) and delivers 362mW power dissipation at +70°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4741EUA+T, the SOT23-8 variant offers higher thermal margin but larger area, while the TMUX1574RSVR trades 6ns slower switching for lower R_ON - making MAX4741EUA+T optimal for space-constrained, high-speed, battery-operated routing where 0.8Ω and 24ns are design-critical.

Availability

MAX4741EUA+T is available at Aetrix Electronics and suitable for audio signal routing, battery-powered data-acquisition systems, and cellular phone baseband switching requiring stable component supply across industrial temperature ranges.

Supply support for MAX4741EUA+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) is a U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for power, sensing, and interface applications.

The MAX4741EUA+T belongs to Maxim's precision analog switch product line, engineered for low-voltage, low-distortion signal routing in portable and battery-sensitive electronics.

FAQ

What is the maximum continuous current rating for the MAX4741EUA+T?

The MAX4741EUA+T supports ±150mA continuous current through each COM/NO path. This rating is validated across the full -40°C to +85°C operating range and assumes proper PCB layout with adequate copper pour for thermal dissipation. Exceeding this current may increase on-resistance drift or trigger thermal shutdown in sustained high-load conditions. The MAX4741EUA+T datasheet specifies peak pulsed current up to ±300mA at 10% duty cycle.

Does the MAX4741EUA+T require external pull-up or pull-down resistors on its IN1/IN2 control pins?

No, the MAX4741EUA+T does not require external pull-up or pull-down resistors on IN1 or IN2. Its CMOS inputs have <1µA leakage current and defined logic thresholds (VIH = 1.4V, VIL = 0.5V at +3V supply), allowing direct connection to microcontroller GPIOs. However, floating inputs must be avoided - unused control lines should be tied to GND or V+ to prevent undefined switching states and unintended conduction in the MAX4741EUA+T.

Can the MAX4741EUA+T operate reliably at 1.6V supply voltage?

Yes, the MAX4741EUA+T is fully specified for operation down to +1.6V supply voltage. At 1.6V, it maintains rail-to-rail analog signal handling (0V to 1.6V), though on-resistance increases to 5Ω max and switching times extend to 40ns/30ns. The device retains 1.8V logic compatibility - IN1/IN2 accept 0V/1.6V logic levels without translation. System validation at 1.6V is recommended for critical timing or low-R_ON applications using the MAX4741EUA+T.

What is the thermal performance difference between the µMAX and SOT23-8 packages for the MAX4741EUA+T?

The µMAX package (U8-1) used in MAX4741EUA+T has a thermal resistance of 4.5mW/°C above +70°C, yielding 362mW max continuous power dissipation at +70°C ambient. In contrast, the SOT23-8 package (K8S-3) has 7.52mW/°C derating and 602mW dissipation. Thus, the MAX4741EUA+T µMAX version runs hotter under identical load - requiring tighter thermal management in high-density layouts but offering 25% smaller footprint than the SOT23-8 alternative.

Is the MAX4741EUA+T pin-compatible with the MAX4742EUA+T or MAX4743EUA+T?

No, the MAX4741EUA+T is not pin-compatible with MAX4742EUA+T or MAX4743EUA+T despite sharing the same µMAX package and pin count. Pin functions differ: MAX4741EUA+T uses Pins 5 and 7 for NO2 and IN1, whereas MAX4742EUA+T assigns Pin 5 to NC2 and MAX4743EUA+T uses Pin 5 for NC2 with Pin 7 as IN1. Swapping these devices without PCB revision will cause incorrect switching behavior or signal shorts. Always verify pin mapping per device-specific datasheet before substitution involving MAX4741EUA+T.